An object weighing 5 kg is perched on a smooth incline that slopes at a 26-degree angle to the horizontal. The amplitude of the object's acceleration is given by F>mg sin26.
What is an explain acceleration?The rate where the direction of movement change over time is referred to as acceleration. Anything is said to be rushing when that goes faster or slower.
What three forms of acceleration are there?The three main types of propelled motions are regular accelerated, non-uniform velocity, and points of data. The motion in which an item moves in a single direction while increasing in velocity at regular intervals is referred to as uniform acceleration.
Briefing:F = ma
F - mg sin26 = ma
a = F - mg sin26/m
a = F/m - gsin26
which implies, F>mg sin26.
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13. Squids and octopuses take in water and forcibly expel it through the
siphon in a sudden spurt that pushes them through the water. This
propulsion is an example of which Newton's Law?
A. 1st Law
B. 2nd Law
C. 3rd Law
D. All of Newton's Laws
Squids and octopuses forcefully expel water through the siphon after ingesting it, propelling themselves through the water. Third Law of Newton.
Describe the third law of Newton's law?His third law asserts that there is an opposite and an equal response in nature for every action (force). When an object A pulls on an object B, the opposite force is applied to the first object by object B. Alternatively said, interactions lead to forces.
What are examples of the third law of Newton?There are numerous real-world applications of Newton's third motion law. For instance, when you leap, the earth exerts an equal and opposing reaction force that propels you into to the air. This is because when you apply a force to it with your legs, it responds in kind. Rockets and other projectiles are designed using Newton's third law by engineers.
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the time constant of an rc circuit is 8.0 s. how much time t is required for the capacitor (uncharged initially) to gain one-half of its full equilibrium charge?
Time t is required for the capacitor to gain one-half of its full equilibrium charge is 5.54 sec.
What is RC circuit?An electrical circuit consisting of passive components like resistors and capacitors, driven by current source or the voltage source is called resistor-capacitor circuit. The capacitor stores energy and resistor that is connected to the circuit controls the rate of charging or discharging.
Given, τ is 8 and q is charge
As we know, q= qo (1−e ^−t/τ )
1/2= 1- e^-t/8
0.5= e^-t/8
t/8 = -ln 0.5
t= 5.54 sec
Time t is required for the capacitor to gain one-half of its full equilibrium charge is 5.54 sec.
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how much work must be done on a particle with a mass of mm to accelerate it from rest to a speed of 0.083 cc ? express your answer in terms of mc2mc2 .
A atom with a size of mm needs to perform work equal to 0.68 mc2 in order to acceleration it from rest to something like a velocity of 0.083 cc.
What is an explain acceleration?The rate about which direction of velocity change over time is referred to as acceleration. It is said to be escalating when it starts to move quickly or slowly.
What three forms of acceleration are there?The three main types of propelled motions are homogeneous acceleration, non-uniform kinetic energy, and average acceleration. The motion in which an item moves in a linear fashion while increasing in velocity at regular intervals is referred to as uniform acceleration.
Briefing:as a mass particle's kinetic energy is,
KE = mc²( - 1 ) ............1
last KE = mc2 (1.68 - 1 )
final KE = 0.68mc²
W = final KE - initial KE
Work = 0.68 mc²
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Thermogenesis has been studied the plants in the genus arum, including skunk cabbage and the corpse flower. In these plants, what hypotheses have been provided to explain the reason behind thermogenesis? select all that apply.
Thermogenesis has been studied the plants in the genus arum, including skunk cabbage and the corpse flower. In these plants, these hypotheses have been provided to explain the reason behind thermogenesis
protection from frost damageleaf production and photosynthesis.seed germination.What is Thermogenesis?Thermogenesis, which takes place in specialised tissues such brown adipose tissue and skeletal muscle, is described as the disposal of energy through the generation of heat.
All metabolic activities involved in keeping the organism in a live condition require mandatory thermogenesis, which takes place in all organs. It also includes the energy used when food is consumed, digested, and processed (thermic effect of food, or TEF).
Thus, the reason behind thermogenesis are:
protection from frost damageleaf production and photosynthesis.seed germination.To know more about thermogenesis refer to:
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calculate the change in entropy of 3 moles of liquid water if you heat it from 5Ëšc to 95Ëšc. the molar heat capacity of liquid water is 75.38 j/molk.
Water in liquid form has an entropy change of 63.4 J/K.
define entropy ?
A state of disorder, randomness, or uncertainty is most frequently associated with the scientific concept of entropy, which is also a quantifiable physical property. From classical thermodynamics, where it was first recognized, to the microscopic description of nature in statistical physics, to the fundamentals of information theory, the term and concept are used in a variety of disciplines. It has wide-ranging uses in physics and chemistry, biological systems and how they relate to life, cosmology, economics, sociology, weather science, and information systems, including the transmission of information through telecommunication.
We use the equation to determine the entropy change for the same phase at various temperatures:
ΔS=n x Cp x In(T₂/T₁)
ΔS=3 x 75.38 x In (368/27)
ΔS= 63.4 J/k
therefore the entropy change of the water is 63.4J/k
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In the example with maya and her bike, which of newton's three laws of motion is best illustrated? why?.
Newton's first law of motion, often known as the law of inertia, is the law that most exemplifies this.
Unless it is operated upon by an external force, the law stipulates that every item will remain in a state of rest or uniform motion. Due to hitting a curb, the bike comes to a stop. A body's resistance to being in its condition of rest or uniform motion is known as inertia. Due to its inertia, Maya is also propelled into the air.Newton's second law of motion serves as an example. Force is directly proportional to mass and acceleration, to sum up this law. The second box accelerates more quickly because its mass is lower than that of the first box.Newton's third rule of motion serves as the clearest example of this. According to this concept, there is an equal and opposite reaction to every action. Air is pushed downward by the bird's wind as it flies. The bird can fly because air pushes upward on it as it utilizes its wind to push air downward. Air moves upward and downward in equal but opposite directions.To know more about laws of motion
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a 45.5-g super ball traveling at 27.5 m/s bounces off a brick wall and rebounds at 21.0 m/s. a high-speed camera records this event. if the ball is in contact with the wall for 3.30 ms, what is the magnitude of the average acceleration of the ball during this time interval?
Throughout this period of time, the ball's average acceleration was 1.46*104m/s2.
What is an explain acceleration?Acceleration refers to the amount of change in a moving object's speed and direction over time. When something moves faster or slower, it is considered to be accelerating. Motion within a single circle speeds despite the fact that velocity is constant since the variable is always moving.
What three forms of acceleration are there?Speeding bullet, non-uniform energy density, and uniform acceleration are the three primary categories of rapid motion. Uniform acceleration describes a motion in which a object moves in some kind of a straight path while accelerating gradually over time.
Briefing:Vi = 27.5m/s
Vf = 21m/s
Vf = Vi + at
a= Δt/Δv
a= 21m/s-(-27.5m/s)/3.30*10⁻³
a = 1.46*10⁴m/s²
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Based on this model, how much of the energy will the tertiary consumers receive if the primary consumers have 3600 joules of energy?.
If the primary consumers have 3600 joules of energy, the tertiary consumers receive 36 joules energy.
What is 10 percent law of energy transfer?The ten percent law was proposed by Lindemann (1942) to explain how energy moves from one trophic level to the next. The law states that only around 10% of the organic substance that is transferred from one trophic level to the next of food is stored as flesh.
The rest is either lost in the transfer process or destroyed during breathing. Only 10% of the energy used by plants for primary production can be stored as net production that is available to herbivores. 10% of the energy in the food gets fixed into animal flesh when plants are eaten by animals, making it available for the next trophic level (carnivores). Only around 10% of the animal's energy is stored in its meat for the higher level when it is eaten by a predator.
So, If the primary consumers have 3600 joules of energy, the tertiary consumers receive 3600×10%×10% joules = 36 joules of energy.
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7. what is the maximum angle of climb (steady velocity climb) for a turbojet powered aircraft with an (l/d)max equal to 10.5 and a gross weight of 8000 lb. if it is producing a thrust of 2000 lb.?
The maximum angle of climb for a turbojet powered aircraft is 8.97°.
Let us consider the velocity is steady.
T is thrust, W is weight, L for lift force, D for drag and θ is angle of climb
From the given information, we can write the below equations,
T = D + W sinθ -----(1)
L = W cosθ -----(2)
Given that, L/D = 10.5
D = L/10.5 -----(3)
Placing (3) in (1), we have
T = L/10.5 + W sinθ
T = (W cosθ)/10.5 + W sinθ
cosθ + 10.5 sinθ = T/W * 10.5
cosθ + 10.5 sinθ = (2000/8000) * 10.5
cosθ + 10.5 sinθ = 2.625
Solving the above equation, we get θ = 8.97°
Thus, the maximum angle of climb is 8.97°.
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a roller coaster car is initially at rest at the top hill of its track. the car descends the frictionless track and acquires a speed of 10 m/s when it reaches bottom of the hill. find the speed of the car when it is half-way down the hill?
The speed of the car when it is half –way down the hill is 7m/s.
This is another illustration of energy conservation. Set the potential energy at the top to equal the kinetic energy at the bottom, then solve for height h and then speed using the same total energy at h/2.
Top:
mgh = (1/2)mv2
hear m=mass
h=Hight
v= speed
gh = v2/2
h = v2/(2g)
= 102/[2(9.8)] m
= 5.1 m
Half way down:
u = speed
g(h/2) = u2/2
u = √[2g(h/2)]
= √(gh)
= √[(9.8)(5)] m/s
= 7.0 m/s
What is Kinetic energy?
the energy that an object produces as a result of its motion. There is unquestionably a need to apply particular forces when an object is prepared to accelerate. Applying force requires work, and once the job is finished, energy is transmitted to the object, causing it to move with a constant speed.
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two small objects each with a net charge of q exert a force of magnitude f on each other. two charges q, with equal and opposite forces f we replace one of the objects with another whose net charge is 4q: two charges, q and 4q the original magnitude of the force on the q charge was f; what is the magnitude of the force on the q charge now?
When one of the Charges Q is swapped out for another charge 4Q, there is a force on Q that is 4F strong.
Coulomb's equation of electricity states that the amount of the force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance separating the two charges.
Calculation:Mathematically, F = KQ₁Q₂ /d²
The coulombs law equation gives the magnitude of the force between the items, F, if the initial charges on the two objects are each equal to Q and the distance between the charges is d. i.e. F = KQQ/d².
The force between the charges will now be given as follows if one of the charges is swapped out for a charge 4Q:
F` = KQ₄Q / d²
F` = 4 × KQQ / d²
Comparing the force's initial and ultimate magnitude on the objectsF' = 4F.
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Question:
Two small objects each with a net charge of Q (positive) exert a force of magnitude F on each other. We replace one of the objects with another whose net charge is 4Q. The original magnitude of the force on the Q charge was F; what is the magnitude of the force on the Q now?
A. 16F
B. 4F
C. F
D. F/4
Disk Y of rotational inertia ly=(1/2)MY(RY)^2 about its center is held at rest above disk X of rotational inertia Ix=(1/2)Mx(RY)^2 about its center. Disk
X initially rotates about its center with an angular velocity of +w0. Disk Y is then slowly lowered onto disk X until both disks are in contact and rotate
together with a common angular velocity. Which two of the following predictions are correct about the angular momentum of disk X and disk Y
immediately before and after the rotational collision? Select two answers.
The angular momentum of disk X immediately after the collision is greater than the angular momentum of disk X immediately before the
collision.
The angular momentum of disk Y immediately after the collision is greater than the angular momentum of disk Y immediately before the
collision.
The angular momentum of disk Y immediately after the collision is greater than the angular momentum of the disk X-disk Y system
immediately before the collision.
The angular momentum of the disk X-disk Y system immediately after the collision is equal to the angular momentum of the system
immediately before the collision.
The statements that are true are
The angular momentum of disk Y immediately after the collision is greater than the angular momentum of disk Y immediately before the collision.The angular momentum of the disk X-disk Y system immediately after the collision is equal to the angular momentum of the system immediately before the collision.What is angular momentum?Angular momentum is the product of the rotational inertia and angular speed of a rotating object.
How to find which statements are true about the angular momentumLet
I₁ = initial angular momentum of disk X = Ixω₀ where Ix = rotational inertia of disk x and ω₀ = angular velocity of disk y, I₂ = initial angular momentum of disk Y = 0 (since it is initally stationary) where I₃ = final angular momentum of disk x = Ixω and I₄ = final angular momentum of disk Y = Iyω where Iy = rotational inertia of disk y and ω = their common angular velocity after the collisionFrom the law of conservation of angular momentum, we have that
initial angular momentum equals final angular momentum
So, I₁ + I₂ = I₃ + I₄
Ixω₀ + 0 = Ixω + Iyω
Ixω₀ = Ixω + Iyω
From the above, we see that
Since I₄ > I₂ = 0,
The angular momentum of disk Y immediately after the collision is greater than the angular momentum of disk Y immediately before the collision.
Also, since I₁ + I₂ = I₃ + I₄,
The angular momentum of the disk X-disk Y system immediately after the collision is equal to the angular momentum of the system immediately before the collision.
So, the statements that are true are
The angular momentum of disk Y immediately after the collision is greater than the angular momentum of disk Y immediately before the collision.The angular momentum of the disk X-disk Y system immediately after the collision is equal to the angular momentum of the system immediately before the collision.Learn more about angular momentum here:
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One important way astronomers can learn in some detail about what happens when galaxies collide is.
Astronomers can learn to simulate the galaxy's collisions on a large computer and watch what the simulation will predict.
What is a galaxy?A galaxy can be described as a system of stars, interstellar gas, dust, and dark matter, bound together by gravity. Galaxies from 100 million stars range in size from dwarf to million stars to the largest galaxies known as supergiants.
Most of the mass in a galaxy is in the form of dark matter, with only a few percentages of that mass visible as stars and nebulae. Supermassive black holes are a common characteristic at the centers of galaxies.
Galaxies can be categorized according to their visual morphology as elliptical, spiral, or irregular. The Milky Way's central black hole or Sagittarius A* has a mass 4 million times greater than the Sun.
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the centers of two slits of width a are a distance d apart. if the fourth minimum of the interference pattern occurs at the location of the first minimum of the diffraction pattern for light of wavelength λ, the ratio a/d is equal to:____.
centers of two slots of width an are separated by this amount. If the initial minimum of the diffraction peak of light of wavelength is where the fourth minimum of the interferometer is located, then the ratio a/d is equal to 2/7.
The wavelength, what is it?A waveform signal's wavelength is defined as the separation between two similar points (adjacent crests) in adjacent cycles as the signal travels through space or along a wire. This length in wireless systems is typically expressed in metres (m), centimeters (cm), or millimeters (mm) (mm).
What exactly are wavelengths and frequencies?The wavelength is indeed the distance that separates two wave crests, while troughs have the same wavelength. The number of oscillations which pass over a specific place in a second is known as the frequency and is expressed in seconds of cycles (Hz) (Hertz).
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a guitar string is fixed at both ends. if you tighten it to increase its tension
a guitar string is fixed at both ends. if you tighten it to increase its tension the frequencies of its vibrational modes will increase but its wavelengths will not be affected.
Stretching a string between two points, as in a stringed instrument, will cause tension on the string. Tension is the degree of stretching that is applied to the string. As the string is tightened, the frequency rises; as the string is loosened, the frequency falls. Strings are tightened or loosened by string musicians to change the pitches of their instruments.
We are aware that a tight string's frequency is determined by
v=√(T/μ)
where c is the frequency of sound wave T is tension and μ is mass per unit length
and velocity is provided by
v=νλ
As increases v also increase ν but wavelength remain same because ends of string are fixed.
your question is incomplete but most probably the full question was
Guitar string is fixed at both ends. If you tighten it to increase its tension (explain your answer):
a) the frequencies of its vibrational modes will increase but its wavelengths will not be affected.
b) both the frequency and the wavelength increase.
c) the wavelength increases but the frequency is not affected.
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In a uniform motion
- Acceleration is non zero constant
- Direction of velocity may vary
- Speed is not constant
- Velocity and speed are constant
Answer:
pls mark as brainliest
Explanation:
Velocity and speed is constant
A car is moving at 30.0 m/s, east in a straight line approaching the red traffic light as shown. The
time it takes for the car to stop is .6 seconds.
What is the acceleration of the car?
Answer:
–5
Explanation:
u = 30m/s , v = 0(comes to a stop) , t = 6s, a = ?
a = v – u/t
a = 0 – 30/6
a = –30/6
a = –5
A car is moving at 30.0 m/s, east in a straight line approaching the red traffic light as shown. The time it takes for the car to stop is 0.6 seconds. The acceleration of the car is -5 m/s.
What is speed?Speed is defined as the pace at which an object's location changes in any direction. The distance traveled in relation to the time it took to travel that distance is how speed is defined.
Given
u = 30m/s ,
v = 0(comes to a stop) ,
t = 6s
To calculate acceleration we use formula
a = v – u/t
a = 0 – 30/6
a = –30/6
a = –5 m/s
Thus, a car is moving at 30.0 m/s, east in a straight line approaching the red traffic light as shown. The time it takes for the car to stop is 0.6 seconds. The acceleration of the car is -5 m/s.
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A cat is running at 4.65 m/s and has 91.7 J of kinetic energy. What is the cats mass
if the plane is flying horizontally and suddenly pulls upward, in which direction does the nose of the plane tend to move?
If the plane is flying horizontally and suddenly pulls upward, the nose of the plane tends to move upwards as the tail moves downwards.
A plane (formally an airplane) is a fixed-wing aircraft that is propelled forward by the thrust of a jet engine, propeller, or rocket engine.
All flight controls use the same basic lift principles as wings. When the pilot moves the controls, they produce lift of nose either up or down.
When the pilot pulls on the control column, the elevator moves up. This creates a wing-like curve on the surface that pulls the tail down. By moving the tail down, the nose of the aircraft rises.
When the pilot pushes forward on the controls, the elevator points down. The opposite happens and there is a lift that pulls the tail up. Pulling the tail up causes the nose of the plane to drop down.
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if such a laser beam is projected onto a circular spot 1.8 mm in diameter, what is its intensity in w/m2?
The intensity is 0.294*103 W/[tex]m^{2}[/tex].
What does light intensity mean?The pace at which light disperses over a body of a specific region some way from a source is referred to as intensity. The intensity changes depending on the source's power and distance from it.
What is an example of intensity?Occasionally, the adjective "intensity" is associated with fury, fire, and violence. It is used to provide a description of a flame's or even a love affair's intensity. For instance, the bond between Bogart and Bergman in Casablanca was very strong.
Briefing:
Intensity I = energy/(area*time)
= power/area
=0.75*10-3 W/(π/4*1.8*1.810-6 m2)
= 0.294*103 W/[tex]m^{2}[/tex].
Therefore, the intensity is 0.294*103 W/[tex]m^{2}[/tex].
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racquetball strikes a wall with a speed of 30 m/s and rebounds with a speed of 26 m/s. the 189) collision takes 20 ms. what is the average acceleration of the ball during the collision?
The acceleration of the racquetball during the collision is found to be 1330m/s².
According to the second law of motion proposed by Newton the force on the body is equal to the change in momentum per unit time of the body.
So, we can write,
Ma = M∆V/t
Where,
M is the mass of the body is the,
a acceleration of the body,
∆V is the change in speed of the body after the collision,
t is the time taken during the collision.
It is given to us that the racquetball strikes the wall with a speed of 30m/s and it rebounds with the speed of 26 m/s the collision time is 20 milli seconds.
Putting the values,
a = 30-(-26)/0.02
a = 1330m/s².
So, the acceleration of the racquetball is 1330m/s².
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multiple choice
15) A coiled spring used to help a door close has ________ ________energy when the door is open.
16) After braking, a bicycle's tires increase in temperature as friction causes some of the
mechanical energy to transfer to ________ energy.
According to conservation of energy, the energy of interacting bodies in a closed system remains constant. The total energy of an isolated system remains constant; it is said to be conserved over a period of time.
Elastic energy is the mechanical implicit energy stored in the configuration of a material or physical system as it's subjected to elastic distortion by work performed upon it. Elastic energy occurs when objects are impermanently compressed, stretched or generally misshaped in any manner.
The mechanical energy is never lost forever , rather it gets converted to thermal energy because of the friction .
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2c. Explain why the diversity changes in the different successional stages.
[2 marks]
Increased availability of nutrients due to changes in soil composition leads to the emergence of new leaves, which boosts diversity.
How does biodiversity change through the stages of ecological succession?The variety of species found in an ecosystem is known as its biodiversity. The evolution of organisms following a catastrophe that wipes out an environment is known as ecological succession. Ecological succession boosts biodiversity by expanding the variety of species that exist in a region.
Site characteristics, the kind of events that start succession, interactions between the species present, and more stochastic elements, such the availability of propagules or the weather at the time of disturbance, can all have an impact on the course of successional change.
Ecological succession is the process by which a region's species and habitat mix changes over time. Until a "climax community," such as a mature forest, is reached or until a disruption, such as a fire, occurs, these communities gradually replace one another.
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The angular momentum of the propellers of a small airplane points directly forward from the plane. Part A In what direction do the propellers rotate as seen from the rear of the plane? Clockwise Counterclockwise None of the above Submit Request Answer Part B If the plane is flying horizontally and suddenly pulls upward, in which direction does the nose of the plane tend to move? The nose of the plane would veer upward. The nose of the plane would veer to the left. The nose of the plane would veer downward. The nose of the plane would veer to the right. Submit Request Answer
In clockwise direction the propellers rotate as seen from the rear of the plane. If the plane is flying horizontally and suddenly pulls upward, the nose of the plane would veer upward. The correct options are B and A respectively.
The propellers rotate anticlockwise when viewed from the back of the aircraft.
When observed from the rear, an anticlockwise rotation direction corresponds to propellers spinning in the forward direction because the angular momentum of the propellers points directly forward from the plane.
The nose of a plane tends to pull forward when a plane flying horizontally suddenly pulls upward. This is brought on by the direction of the lift force produced by the wings changing.
By raising the nose, the angle of attack widens, increasing the lift force that raises the plane's nose upward. The change in the aerodynamic forces exerted on the aircraft is what causes the nose to rise upward.
Thus, the correct options are B and A respectively.
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Your question seems incomplete, the probable complete question is:
The angular momentum of the propellers of a small airplane points directly forward from the plane. Part A In what direction do the propellers rotate as seen from the rear of the plane?
A. Clockwise
B. Counterclockwise
C. None of the above
Part B If the plane is flying horizontally and suddenly pulls upward, in which direction does the nose of the plane tend to move?
A. The nose of the plane would veer upward.
B. The nose of the plane would veer to the left.
C. The nose of the plane would veer downward.
D. The nose of the plane would veer to the right.
An external force of 5 n is applied to a 10 kg object over a time of 3 s. Determine the impulse of the object.
The impulse of the 10kg object is 15Ns.
How to calculate impulse?Impulse is the integral of force over time. The impulse of an object in physics is a term that is used to describe or quantify the effect of force acting over time to change the momentum of an object.
It is represented by the symbol J and usually expressed in Newton-seconds or kg m/s.
According to this question, an external force of 5N is applied to a 10kg object over a time of 3 s. The impulse can be calculated as follows:
Impulse = 5N × 3s = 15Ns
Therefore, 15Ns is the impulse of the object.
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how far the first bright diffraction fringe is from the strong central maximum if the screen is 13.0 m away.
The first bright diffraction fringe is 13.0 m away from the strong central maximum if the screen is 13.0 m away.
Calculate the wavelength of light.
The wavelength can be calculated using the formula, λ = d/n, where d is the distance between the slits (d = 0.050 mm) and n is the order of the diffraction fringe (n = 1).
Therefore, λ = 0.050 mm/1 = 0.050 mm.
Calculate the distance of the first bright diffraction fringe.
The distance of the first bright diffraction fringe can be calculated using the formula, d = λD/d, where λ is the wavelength of light, D is the distance between the screen and the slits (D = 13.0 m) and d is the distance between the slits (d = 0.050 mm).
Therefore, d = (0.050 mm)(13.0 m)/0.050 mm = 13.0 m.
Therefore, the first bright diffraction fringe is 13.0 m away from the strong central maximum if the screen is 13.0 m away.
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the movement of earthy materials from higher region to lower region due to gravitational pull is called
Landslides are caused by earthy elements moving from higher to lower areas as a result of gravity. The sliding down of a slope of a volume of rock, rubble, or earth is known as a landslide.
What creates the attraction of gravity?All things with mass, including our Earth, really bend and curve spacetime, which is what causes gravity to pull you toward the ground. What you experience as gravity is that curvature.
What term best represents the pull of gravity?A mass attracts a mass; the amount of the gravitational force is direct proportion to the masses of both the two items and inverse to the square of both the distance between two pieces. Gravitational force is an electrostatic attraction and exists among the objects with mass.
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in a region of space where gravitational forces can be neglected, a sphere is accelerated by a uniform light beam of intensity 8.0 mw/m2. the sphere is totally absorbing and has a radius of 1.0 microns and a uniform density of 4500.0 kg/m3. what is the magnitude of the sphere's acceleration (in m/s2) due to the light?
The answer for the magnitude of the sphere's acceleration (in m/s²) due to the light is 4.44×10⁻⁹ m/s²
Newton's second law must be applied in order to determine the acceleration.
F = m×a and a = F/m.
We use the defined pressure and the radiation pressure for an absorbent surface to determine the force.
P=I/c absorbent surface
P = F / A
F / A = I / c
F = I A / c
A circle's total area is
A = π×r²
We swap out
F = I π r² / c
Let's compute
F = 8.0×10⁻³ π (1.0×10⁻⁶)²/3×10⁸
F = 8.375×10⁻²³ N
To measure Density
ρ = m / V
m = ρ V
m = ρ (4/3 π r³)
m = 4500 (4/3 π (1×10⁻⁶)³)
m = 1,885×10⁻¹⁴ kg
Now let's determine the acceleration.
a = 8.375×10⁻²³ / 1.885×10⁻¹⁴
a = 4.44×10⁻⁹ m/s² absorbent surface
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A passenger on an airplane flying across the Atlantic receives an extra radiation dose of about 5 μSv per hour from cosmic rays. Assume there are no other significant radiation sources besides natural background. Suppose that the natural background exposure in a year is 3 mSvHow many hours of flying would it take in one year for a person to double his or her yearly radiation dose?Answer in hr please
The person needs to fly 600 hours to double his radiation.
What is radiation?Radiation is the energy that is comes from a source and it is travels through the space at the speed of light.
The passenger on to the airplane gets an extra dose to the of five microsieverts and per hour when his plane is flying across the Atlantic. We want to know when one person should apply in the double. His early radiation is to good. The person gets a radiation dose due to the background radiations. Background radiations are the what this is about. There are no way to double they can do the irradiation. Does it the person need a lot of time hours to fly? We can definitely find a number of the hours by using the relation gee of total doors to that need to be received extra divided by that power. The double layer radiation of the was added to our Essen. Does the person need to receive an extra dose of the
extremely sure barrier from to a the Cosmic Radiations as a person is receiving the radiation at a rate of five of Microsoft word barrier from Cosmic Radiations? We can be write this as two equal to three giant standard of the power minus three c. Your to support and Seaworld will be deleted from to the numerator and denominator of disk. It will do that if we use it.
Thus ,The person needs to to be fly 600 hours to double his radiation.
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the molecular shape of a covalent species is determined not only by the number of electron groups that join the atoms, but by the number of electron groups as well, since these electrons also occupy space. t or f
A covalent species' molecular structure is influenced by both the number of shared and unshared electron groups that link the atoms together because these electrons take up space as well.
The connection is that the quantity of valence electrons influences which other atoms an atom can form a bond with.A chemical bond involving the exchange of electron pairs between atoms is referred to as a covalent bond. The electron pairs are known as bonding pairs, it should be highlighted.The electrons in the atom's outermost shell are known as the valence electrons. The connection is that the quantity of valence electrons influences which other atoms an atom can form a bond with.
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