If you are in a tunnel and yell loudly, you can hear__________________ sound waves, which are also known as ____________

Answer:

because the diving board is helping the diver jump and helping increase the force of the diver's jump, they work together to help the jumper have a jump.

46 days is the half-life of the radioisotope.

The half-life, in radioactivity, is the amount of time needed for half of the atomic nuclei in a radioactive sample to spontaneously transform into other nuclear species while emitting particles and energy, or, alternatively, the amount of time needed for the radioactive sample to disintegrate on average once every second.

The half life of a radioactive substance can be predicted by:

N(t) = N₀(1/2)^[t/t(h)]

N(t)  is the amount remaining (mg)

N₀ is the initial amount (mg)

t is the time elapsed, in days

t(h) is the half life in days.

N(t) = N₀(1/2)^[t/t(h)]

or, 0.50mg = (8.0mg)(1/2)^[184 days/t(h)]

Using logs, we can solve this for t(h):

t(h) = 46 days

To know more about radioisotope refer to:

https://brainly.com/question/18640165

#SPJ1

When the boy realizes he is late for dinner, he doubles his acceleration. The force that the boy is pulling the wagon now will also be doubled.

What is Newton's first law?

Unless influenced by an imbalanced force, an item at rest stays at rest, and an object in motion keeps moving in a straight path at a constant pace.

An item that is stationary is one that is not shifting or considered the beginning.  In such posture, all the forces exerting pressure on it are balanced out or their combined magnitudes are zero.

Based to their inertia, stationary objects which have already balanced forces acting on them prefer to stay that way. When an unbalanced force is operating on a stationary item will it move.

As we continuously  increases the force some particular object the acceleration also increases proportionally. so, the mass does not change as the acceleration increases, we can say that force that the boy is pulling the wagon is equal to acceleration. Therefore, if the boy double the force double the acceleration.

Learn more about Newton's first law,

https://brainly.com/question/26108169

#SPJ1

The acceleration of the airplane of mass 5000 kg is 0.1 m/s².

Acceleration is the rate of change of velocity.

To calculate the acceleration of the airplane, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the acceleration is 0.1 m/s².

Learn more about acceleration here: https://brainly.com/question/26408808

#SPJ1

The process of selecting the optimal action to take from a multitude of possibilities can be characterized as decision making.

Meaning of making decisions:

The basic goal of managerial economics is decision-making. The process of choosing the best course of action from among multiple alternatives can be referred to as decision-making. Whenever there are numerous options, decision-making becomes a challenge.

Decision Making and Economics

Well, making decisions affects everyone's life; they are not just for executives or the corporate sector. Whether a person is employed or jobless, making decisions is important to everyone. Regardless of the work you are now doing, a choice needs to be made. You have several choices to make as a participant.

to know more Economics, visit to:-

https://brainly.com/question/14787713

#SPJ1

Answer:

The compound formed has ionic bonds and is a crystalline solid

Explanation:

A metal plus a nonmetal chemical combine to form an ionic compound, with ionic bonds

The velocity of a vehicle is typically expressed relative to ground.

Velocity is the speed of something that is given direction.

velocity is the measurement  to a  body's "pace of change of  the displacement in relation to time" whenever the main  body is traveling through along a straight route.

It is common knowledge of  that the word "linear" refers to be something that is totally straight; therefore,  when the body moves in a straight path, it is said to be linear velocity .

Alternatively, velocity is the  distance traveled by a body traveling in a specified to the direction during of a predetermined period of time. Thus, the fundamental idea of linear velocity is the  provided by the union of these two quantities.

Because it always has the direction of velocity is a vector.

To know more about velocity click-

https://brainly.com/question/25749514

#SPJ1

Answer:9700 N

Explanation: i js know

Ratio of turns on the primary coil is 26

Briefing

So to solve for this problem this is computed by the following steps

Vp/Vs  (=Np/Ns)

Briefing

Where;

Vp = Voltage primary

Vs = Voltage Secondary

Np =Turn ratio primary

Ns = Turn  ratio Secondary

So plugging in our Valves

110/4.1 =Np/Ns

Np/Ns= 26.82

So the answer is 26  Coils

Learn more about Voltage

Visit:

https://brainly.com/question/2364325

#SPJ4

Answer:

10

Explanation:

as f=ma

if you make a the subject it becomes f/m=a so when the denominate increases the answer increases

The total number of Valence electron groups determines the configuration of electron groups around a core atom. The relative placements of the atoms around the core atom determine the shape of the molecular structure.

A molecule is the smallest unit into which a substance may be subdivided and still remain the same thing. It has two or more atoms in it.

To know more about Valence electron

https://brainly.com/question/29104023

#SPJ4

There is an air dielectric breakdown (10 mT). This happens when air (a dielectric) breaks down and charges are transferred from the sky to the earth.

In an electromagnetic wave, the connection between the strength of the electric and magnetic fields is E=cB.

where E is the size of the electric field.

The speed of light is c.

B is the magnetic field's strength.

E=3.106V/m is the electric field, and c=3.108m/s is the speed of light in this equation.

When we solve for B, we get B=E/c=3.106 V/m/3.108 m/s=0.01T=10mT.

When the electrical voltage across a material is greater than the substance's dielectric strength, dielectric breakdown occurs, leading to partial ionization. When a gas breakdowns, the ionization dramatically diminishes the gas' electrical insulating qualities, producing a spark or an arc.

High electric strengths (on the order of 1 MV/cm) and phenomena resembling those for gases control breakdown in highly purified liquid dielectrics. Liquids, which can contain particles, other liquids in suspension, and dissolved gases, are sadly readily polluted.

Learn more about electric field here:

https://brainly.com/question/8971780

#SPJ4

An example of no work after the effort is work done by the collie to travel a distance in a straight line by lifting a mass.

In physics, the word "work" involves the measurement of energy transfer that takes place when an item is moved over a range by an externally applied, at least a portion of which is applied within the direction of the displacement.

The length of the path is multiplied by the element of a force acting all along the path to calculate work if the force is constant. The work W is theoretically equivalent towards the force f times the length d, or W = fd, to portray this concept.

The amount of work done by the coolie to travel a certain distance in a straight line by lifting a certain amount of mass. Here the work done is zero because when the coolie lifted the mass the force exerted in the upward direction makes an angle of 90° and as per the formula of work done it will be equal to zero.

To know more about Work:

https://brainly.com/question/13662169

#SPJ1

The things that get in the way of electrical flow is called insulator.

An insulator is a material (body or substance) that resists electrical flow through it. Therefore, it can be said that the insulator gets in the way of electricity flow. Electrical insulators usually have electrons that are tightly bounded to each other, making them not able to move freely.

Electrical insulators are usually used to support and separate electrical conductors in various electrical equipment. The purpose is to hold the conductors in position without allowing electrical current through itself.

Some examples of electrical insulators are:

Learn more about insulator at https://brainly.com/question/492289

#SPJ4

Answer: Insulator

Explanation:

If something gets in the way or breaks the flow of electricity, it is called an insulator.

The motorbike travels at a speed of 40 m/s

the speed at which an object's location changes in any direction. The distance traveled divided by the time it took to travel that distance indicates how fast something is moving.

Kinetic energy, which may be seen in the movement of an item or subatomic particle, is the energy of motion. Kinetic energy is present in every particle and moving object.

KE = ½ m[tex]V^{2}[/tex]

We have kinetic energy of 200,000 j, mass of 250 kg , so to fine [tex]v^{2}[/tex]

using KE = ½ m[tex]V^{2}[/tex]

kinetic energy will be multiply by 2 and divided by mass

[tex]v^{2}[/tex]= KE / 1/2 * m

[tex]v^{2}[/tex] = 200000 * 2 / 250

[tex]v^{2}[/tex] = 1600

v = [tex]\sqrt{1600}[/tex]

v = 40 m/s

The motorbike travels at a speed of 40 m/s

To know more about speed click:

brainly.com/question/28224010

#SPJ4

Answer:

Explanation:

it provides warmth and protection

Ice on steel has low coefficient of friction whereas rubber on pavement has high coefficient of friction. Object such as silicone rubber can have a coefficient of friction much greater than one.

Polytetrafluoroethylene has the lowest friction coefficient of any solid-state material but the coefficient of friction depends on the materials used.

Ice on steel has a low coefficient of friction as the two materials slide past each other very easily whereas rubber on pavement has a high coefficient of friction that is the materials do not slide past each other easily. We can say that rougher surfaces have a higher coefficient of friction.

Coefficient of friction more than one means that the frictional force is stronger than the normal force. An object such as silicone rubber, for example, can have a coefficient of friction much greater than one.

to know more about coefficient of friction, refer

https://brainly.com/question/14121363

#SPJ1

Answer:

Below

Explanation:

Normal force = mg = 17(9.81)

force of friction = normal force * coefficient of static friction

                           = (17* 9.81 * .5) = 83.4 N

Answer:

the work done on it is if it bounces of the wall then it can bounce back to you

Explanation:

Blood pressure decreases is expected to happen to the total peripheral resistance (tpr) when the hand is placed in the ice cold water.

Hypertension is characterized by an increase in peripheral resistance overall brought on by both functional and structural changes in the arterioles, and endothelial malfunction is a significant factor in the rise in arteriolar tone. TPR is influenced by a number of variables, including blood viscosity and volume as well as hormone and neurotransmitter levels in the blood.

Hypertension is characterized by an increase is total peripheral resistance brought on by both changes in structure and function in the arterioles, and angiogenesis is a significant factor in the rise in arteriolar tone.

To know more about Total peripheral resistance visit:

https://brainly.com/question/15001073

#SPJ4

(a) The highest possible rate of kinetic energy is -2.2 eV and the highest possible rate of speed is 2.3 × 10⁶ m/s.

(b) The length of the radiation's wave is 86 nm.

(c) The lowest frequency of visible light is 3.5 x 10¹⁴ Hz.

To solve this problem, we can use the following equations:

- The maximum kinetic energy of the electrons emitted from the sodium surface is given by:

KEmax = Work function - Potential difference

- The maximum speed of the electrons is given by:

vmax = sqrt (2 × KEmax ÷ m)

where m is the mass of the electron.

- The incident radiation wavelength can be calculated using the Planck-Einstein equation:

E = h × f

where E is the energy of the incident radiation, h is the Planck constant, and f is the frequency of the radiation.

- The minimum frequency required for photoemission can be calculated using the work function of the sodium surface:

fmin = Work function ÷ h

- Using these equations, we can calculate the following:

(a) The maximum kinetic energy of the electrons is given by:

KEmax = 2.3 eV - 4.5 V = -2.2 eV

Hence,  the maximum kinetic energy is -2.2 eV.

- The maximum speed of the electrons is given by:

vmax = sqrt(2 × (-2.2 eV) ÷ (9.1 × 10⁻³¹ kg)) = 2.3 × 10⁶ m/s

Hence the maximum speed is 2.3 × 10⁶ m/s.

(b) The incident radiation wavelength can be calculated using the Planck-Einstein equation:

E = h × f

f = E ÷ h

f = 2.3 eV / (6.6 × 10⁻³⁴ J × s) = 3.5 × 10¹⁴ Hz

lambda = c ÷ f

lambda = (3.0 x 10⁸ m/s) ÷ (3.5 x 10¹⁴ Hz) = 8.6 x 10⁻⁷ m = 86 nm.

Hence, the wavelength of the radiation is 86 nm.

(c) The minimum frequency required for photoemission can be calculated using the work function of the sodium surface:

fmin = 2.3 eV ÷ (6.6 × 10⁻³⁴ J × s) = 3.5 × 10¹⁴ Hz

Hence, the minimum frequency of light is 3.5 × 10¹⁴ Hz.

Learn more about kinetic energy here:

brainly.com/question/26472013

#SPJ4

One possible response is WOOLLEN, which is pronounced "double U, double O, double L." The only terms with consecutive triple doubles that are commonly used are BOOKKEEPER (or BOOKKEEPING), which offers a more gratifying solution.

which three double-letter states are there?

If you're looking for a single word with three consecutive letters, "ghi" is the one you desire!

What word has three double letters in it?

An ancient joke asks, "Can you think of a term with three consecutive double letters?" One possible response is WOOLLEN, which is pronounced "double U, double O, double L." The only terms with consecutive triple doubles that are commonly used are BOOKKEEPER (or BOOKKEEPING), which offers a more gratifying solution.

To know more about (Consecutive word)

Visit:

https://brainly.com/question/18500956

#SPJ1

The Molecular Mass of ideal gas as per kinetic theory is 12.541 g.

V=√[3RT/M]

squaring both sides of equation

V²=3RT/M

M= 3 x 8.3 x 273/542

=12.541 g

To learn about Molecular Mass -

https://brainly.com/question/14122402

#SPJ4

The astronaut faces 1.71 rad/s angular velocity, 17.1 m/s linear velocity, 29.2 centripetal acceleration, 3 g's are experienced, and 2044 N of centripetal force. The torque experienced is zero

What is rotational motion?

An object is said to be in rotational motion when it is travelling in a circular route around a fixed axis. Centrifugal force is a radially outward force that the item experiences as a result of this motion.

The image given below explains the conversion. The torque is zero since there is no tangential force.

To learn more about centrifugal force click here

https://brainly.com/question/13259103

#SPJ1

The maximum height that the ball reaches is 8.79 m and  the range of the ball is  12.29 m

To find the maximum height that the ball reaches, you will need to use the equation for the vertical displacement (y) of the ball:

y = Vy * t - (1/2) * g * t^2

Where Vy is the vertical component of the initial velocity, t is the time elapsed, and g is the acceleration due to gravity.

To find the time at which the ball reaches its maximum height, set the vertical displacement (y) to zero and solve for t:

0 = Vy * t - (1/2) * g * t^2

This equation can be rearranged to:

t = √(2Vy/g)

Then, substitute the given values for the initial velocity (Vy) and the acceleration due to gravity (g), and solve for t:

t = √(2 * 15 m/s * sin(50) / 9.8 m/s^2)

t = 1.16 s

y = Vy * t - (1/2) * g * t^2

y = 15 m/s * sin(50) * 1.16 s - (1/2) * 9.8 m/s^2 * (1.16 s)^2

y = 8.79 m

To find the range of the ball, you will need to use the equation for the horizontal displacement (x) of the ball:

x = Vx * t

Where Vx is the horizontal component of the initial velocity and t is the time elapsed.

To find the time elapsed (t), use the equation for the time at which the ball reaches its maximum height:

t = √(2Vy/g)

Substitute the given values for the initial velocity (Vy) and the acceleration due to gravity (g), and solve for t:

t = √(2 * 15 m/s * sin(50) / 9.8 m/s^2)

t = 1.16 s

To find the horizontal component of the initial velocity (Vx), use the equation:

Vx = V0 * cos(θ)

Where V0 is the initial velocity of the ball and theta is the angle of launch. Substitute the given values for the initial velocity (V0) and the angle of launch (theta), and solve for Vx:

Vx = 15 m/s * cos(50)

Vx = 10.6 m/s

To find the range of the ball, substitute the values for the horizontal component of the initial velocity (Vx) and the time elapsed (t) into the equation for the horizontal displacement (x):

x = Vx * t

x = 10.6 m/s * 1.16 s

x = 12.29 m

To know more about  range visit : https://brainly.com/question/16543060

#SPJ4

The two measurements, which are needed in order to calculate the speed of an object in motion, be: amount of distance travelled at a particular time interval and the time interval.

The pace at which an object's position changes in any direction is what is meant by speed.

Speed is measured as the ratio of the distance traveled to the time it took to cover that distance. Speed is a scalar quantity since it just has a direction and no magnitude. Be meter/second is the SI unit of speed.

The equation, s = d/t, offers the speed formula.

Where,

s is the speed in m.s⁻¹

d is a representation of the distance in m.

The duration in s is t.

your question is incomplete, but most probably your full question was

Which two measurements are needed in order to calculate the speed of an object in motion?

Distance and time

Time and mass

Force and distance

Volume and time

Learn more about speed here:

brainly.com/question/28224010

#SPJ4

The spin of the odd particle, which can be inferred by counting energy levels up to the Fermi level, determines the ground-state spin of the nucleus.

A positive-charged subatomic particle is known as a proton. Protons are held together in the atom's nucleus by the strong nuclear force. The neutron is a type of subatomic particle without charge.

subatomic particles with a positive charge that live in the nucleus. Neutrons: Subatomic particles with a neutral charge that are found in the nucleus. Electrons: Subatomic particles with a negative charge that are present in the electron shells that enclose the nucleus.

The positive charge proton have a propensity to reject one another, but the neutrons keep the nucleus together. The quantity of protons determines the atomic number, and the sum of the protons and neutrons determines the atomic mass. The atomic mass of hydrogen is 1, as there is just one proton and no neutrons in the material.

To know more about Protons and Neutrons visit:

https://brainly.com/question/13131235

#SPJ4

Graph of weight vs. forces of friction of the shoes would be linear. Greater is the weight (X) of shoes, greater is friction (Y) between the object and the surface on which the object is kept.

Given let weight being X and forces of friction being Y.

As we know that the gravitational force is equal to mass multiplied by acceleration due to gravity. When mass increases, weight of the shoes (X) increases, therefore normal force increases and so friction  (Y) also increases.

Friction is directly dependent on the weight acting between two surfaces. When the mass is more, weight will be more and hence friction will also be more.

To know more about force of friction, refer

https://brainly.com/question/24386803

#SPJ1

Answer:D

Explanation: