calculate the minimum number of 15-ampere lighting branch circuits required in a residence of 1,850 square feet.

The calculated answer is 2α. You must (a) increase the angular acceleration in order to increase the moment of inertia of a body about an axis.

The rotational rate of the body, measured in radians per second, is used to define the angular velocity of a rotating body about a fixed axis as (rad/s). In linear kinematics, force is what drives an object's acceleration. Similar to this, an angular acceleration is brought on by torque. As a result, torque can be thought of as the rotational counterpart to force. The force that can cause an object to rotate along an axis is measured as torque. Similar to how force accelerates an object in linear kinematics, torque accelerates an object in an angular direction. A vector quantity is a torque.

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10^3 watt is the power of the heater,

power=work done/time

work done= mcΔt

m=1 kg

c=4.2 x 103 Jkg-¹ C-¹

Δt=75°C

work done= mcΔt

work done=1 x 4.2 x 10^3x 75

work done=3.15x10^5 joule

power=work done/time

power=3.15x10^5 joule/315 s

power= 10^3 watt

power is produced when a force causes a displacement. There is no connection between power and the amount of time this force takes to cause a displacement. The process's speed might range from being finished quickly to taking some time. For example, it takes an abnormally long time for a rock climber to elevate her body a few meters over the cliff's edge. A trail hiker, on the other hand, may swiftly lift her body a few meters if she selects the faster path up the mountain. Even though the two people put in the same amount of power , the hiker finishes the assignment far faster than the rock climber.

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Answer:24

Explanation:u just get good sum idek

The heat engine thermal efficiency is 70%, at which the engine has 9.33 kW of Power output.

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Force exerted on 4kg block =  6.2 N

Force exerted on 2kg block = 4.51 N  

Forces are influences that can change the movement of an object. A force may change the velocity of an object of mass (m), i.e. accelerate it. Forces can also be referred by pushing or pulling. A force has both magnitude and direction and thus it is a vector quantity.

For the acceleration of all the boxes:

Fₙ = ma

a = Fₙ/m

a = 14/(2+3+4)

a = 1.55 m/s²

For 2 kg block:

Fₙ - F₁ = m₁ × a

14 - F₁ = 2 × 1.55

F₁ = 4.51 N

For 4 kg block:

F₂ = m₃ × a

F₂ = 4 × 1.55

F₂ = 6.2 N

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Complete question is as follows:

Blocks with masses of 2. 0 kg, 3. 0 kg, and 4. 0 kg are lined up in a row on a frictionless table. All three are pushed forward by a 14 n force applied to the 2. 0 kg block.

How much force does the 3kg block exerted on 4 kg block?

How much force does the 3 kg block exerted on 2 kg block?

The metal in the spoon is an excellent conductor is correct sentences.

Conductors are the elements or materials that allow electricity to pass through them. They conduct electricity because they allow for simple electron passage between atoms inside of them. Conductors also allow heat or light to be transferred between sources. People, the earth, metals, and living things are all examples of conductors. We occasionally get electric shocks as a result. Additionally an excellent conductor of electricity is the human body. Therefore, it provides an unimpeded conduit for the electricity to travel from wire to body.

Conductors are made easy for current to pass through by the presence of free electrons on their surface. The capacity of conductors to carry electricity is based on this.

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Using the Newton Laws, the acceleration of the object is 2.67m/s²

Based on the problem, we can draw the diagram as below to help our understanding.

From the information provided we know that:

F = 50 N (horizontal pull)

W = 75 N

f = 30 N (friction force)

From the picture, we could focus first on the X-axis, where the horizontal force and the friction force work on the object. We would apply the second law of Newton for this axis since there is movement happening within this axis.

∑Fx = m.a

F - f = m.a

50 - 30 = m.a

m.a = 20N ... (i)

Next, we will focus on the Y-axis. In this axis neutral force and weight are working but not resulting to any movement within the axis. ence, we will be applying the first law of Newton:

∑F = 0

N - W = 0

N = W

N = 75N ... (ii)

Since we know that weight is the result of multiply between mass and gravity, we could find the mass of the object by assuming the gravity is 10m/s²

W = m.g

75 = m (10)

m = 7.5kg ... (iii)

We could subtitute the equation (iii) into equation (i) to find the acceleration of the object:

m.a = 20N

(7.5) a = 20N

a = 2.67m/s²

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stone's position from the ground after:

a) .5 seconds is 56.275 m.

b) 1.0 seconds is  50.1 m.

c) 1.5 seconds is 45.475 m.

d) 2.0 seconds is 30.4 m.

Given parameters:

Height of the tower; h₀ = 60 m.

Initial velocity, u = 5 m/s.

We know that,

acceleration due to gravity, g = 9.8 m/s².

applied formula is :

h = h₀ - ( ut + 1/2gt²)

a)So, stone's position from the ground after:

.5 seconds:

h = h₀ - ( ut + 1/2gt²)

= 60m - ( 5*0.5 + 1/2*9.8*0.5²) m

= 56.275 m.

b)So, stone's position from the ground after:

1.0 seconds:

h = h₀ - ( ut + 1/2gt²)

= 60m - ( 5*1.0 + 1/2*9.8*1.0²) m

= 50.1 m.

c)So, stone's position from the ground after:

1.5 seconds:

h = h₀ - ( ut + 1/2gt²)

= 60m - ( 5*1.5 + 1/2*9.8*1.5²) m

= 45.475 m.

d)So, stone's position from the ground after:

2.0 seconds:

h = h₀ - ( ut + 1/2gt²)

= 60m - ( 5*2.0 + 1/2*9.8*2.0²) m

= 30.4 m.

Hence, different position of the stone in different time is calculated.

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Ignoring the Friction, the Acceleration of the block would be 2 [tex]ms^{-2}[/tex].

The relation of force with mass and acceleration is given by :

Force = Mass  *  Acceleration

Here the Force is 10N and the mass of the block is 5 Kg so substituting the values in the formula we get

Acceleration =  [tex]\frac{Force}{Mass}[/tex]  =  [tex]\frac{10}{5}[/tex] = 2 [tex]ms^{-2}[/tex] .

What is force-

According to physics. A force can cause an object with mass to accelerate when it changes its velocity, for as when it moves away from rest. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction. It is calculated using the newton SI unit (N). Force is denoted by the letter F. (formerly P).

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The static frictional force will be 490 N

What do you mean by Static frictional force?

Static friction is an external force that keeps at rest. It can be written as : The friction experienced when individuals or any objects try to move a stationary object on a surface, without actually triggering any relative motion between the body and the surface on which it is on.

Weight of the crate is, mg = 875 N

Magnitude of applied force is, F = 300 N

Coefficient of static friction is, s = 0.56

Coefficient of kinetic friction is, k = 0.47

Let the minimum force required to move the crate be Fp

The static frictional force is,

 fs =  s mg

  = (0.56 ) (875 N)

= 490 N

For the crate to slide, we need to apply atleast  Fp= 490 N

Hence in the above case the frictional force will be 490N

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The velocity should be 12.6 m/s to just crest the next hill.

The law of conservation of energy states that energy is neither created nor destroyed, and can only be converted from one form of energy to another. This is the principle that states that certain physical properties (that is, measurable quantities) do not change over time within an isolated physical system.

By law of conservation of energy:

¹/₂ mv₁² = mgh₂ + μmg - mgh₁

¹/₂ mv₁² = mg(h₂ - h₁ +  μ)

v₁² = 2g(h₂ - h₁ +  μ)

v₁² = 2×9.8 (10 - 2 + 0.1)

v₁² = 158.76 m/s

v₁ = 12.6 m/s

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Answer:

below

Explanation:

d  = 1/2 a t^2

  = 1/2 (9.81)(5.2)^2 = 132.6 m =~ 133 m

The answers include the following:

This is referred to as the muscle of the heart and it is involved in pumping of blood to different parts of the body.

In the case of a heart attack, this type of muscle is affected which leads to reduction in the distribution of blood.

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Answer:

Explanation:The answers include the following:

The skill which involves the ability to change and control the direction or position of the body while keeping the motion quick and constant is agility and is denoted as option A.

The place where Li Qiu should start and where he should end is gland produces adrenaline; heart beats faster.

The type of  contraction which involves muscles lengthening as they strengthen is eccentric.

The action which helps you warm up before you begin exercising is walking around at a normal pace.

As the food travels down her esophagus, smooth muscles are working.

The word which describes the muscles that support your hollow organs is smooth.

Muscle physiology is a field of study which involves learning how muscles work

The best benefit of staying fit in terms of Lisa's memory is that staying fit creates new brain cells.

When you walk, pick something up, or sit down, the skeletal muscles are used.

Learning to dance has built up metabolic connections in Hiro's body.

The act of muscles tightening and shrinking is contraction.

The cardiac muscles is where the heart attack harmed.

A growth disorder is most likely as a result of endocrine disorder.

When you tighten your fist, it extends.

Faith's metabolism is working at a higher level which is why there are changes such as feeling better rested.

What is Cardiac muscle?

This is referred to as the muscle of the heart and it is involved in pumping of blood to different parts of the body.

In the case of a heart attack, this type of muscle is affected which leads to reduction in the distribution of blood.

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Answer: Yes

Explanation: The block moves a distance d under the influence of the force, so work is done by the force. Note that since the object is not accelerating, there is another force present, most likely friction.

b.

No. of turns of wire would be required to make a 120 mh inductance out of a 33.0 cm -long air-filled coil with a diameter of 4.1 cm is μ*2740.68 as μ is variable for different types of material.

An electrical conductor's propensity to resist a change in the flow of current through it is known as inductance. A magnetic field is produced around a conductor by an electric current flowing through it. The magnitude of the current determines the field strength, which follows any changes in current.

The formula of Inductance is L = μN2A/l  where L = Inductance (H), μ = Permeability (Wb/Am),N = The coil's number of turns, A = The coil's cross sectional area =  π*d²/4, l = Length of coil (m)

Now acc. to the given data

L=120mh

I=33.0cm =0.33m

Diameter=4.1cm

A= π*d²/4 = 3.14*4.12/4

A=13.19cm2or 0.001319m2

Now rearranging the formula for no. of turns we get

N=√LI/μA

So, N=√ 120*0.33/μ*0.001319

N=μ*2740.68

Hence, no. of turns of wire would be required to make a 120 mh inductance out of a 33.0 cm -long air-filled coil with a diameter of 4.1 cm is μ*2740.68 as μ is variable for different types of material.

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X will lift faster and easier than Y because of X lift with maximum speed with minimum energy consumption.

First we have to find from that we get to know that which windlass will lift faster,

For windlass X,

Torque(X)=weight x radius of drum

                 =50x9.81x0.25=122.625 Nm

Torque (Y)=weight x radius of drum

                  =50x9.81x0.375=183.93 Nm

As we know that,

Equation of Power= Torque x Angular velocity

And Angular velocity (w)= 2 x pi x N/60

Therefore Torque is inversely proportional to speed. Thus, when speed of the car is increasing , decreaseing of torque will start.According to above sentence ,windlass X have maximum speed of lift and windlass Y have comparatively low speed.Also power is directly proportional to Torque, so maximum torque used maximum energy and vice versa.

Therefore X lift with maximum speed with minimum energy consumption.

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The student's claim that the magnitude of the force of air resistance is proportional to the speed of the object is true because an increase in downward force results in an equal and opposite increase in upward force or air resistance.

The force of air resistance acting on a moving object is known as friction.

An increase in the velocity of an object with time is known as acceleration.

The force on a body is directly proportional to the acceleration of the body. This means that force increases with an increase in acceleration.

According to Newton's third law of motion, force and reaction are equal and opposite.

Hence an increase in the downward force of a falling body results in an increase in air resistance.

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The process of formation of the inner planets, namely from a collection of solid objects, gas, and dust that are joined in a heavy mass. During the initial process of forming a gas disc, a number of dust, gas, and other surrounding material fly in the same mass line and surround the sun like a belt.

The process of forming the outer planets is from the cooling process of several clumps that also orbit, continue to spin, and pull the sky material around them in the form of gas, dust and solid objects with their own gravity then solidify and become planets.

The Solar System is a collection of celestial bodies consisting of a star called the Sun and all objects bound by its gravitational force. The Sun is the center of the solar system. The sun is a star that is closest to the earth. Like other stars, the Sun is a hot object composed of various high-pressure gases. The sun is gigantic when compared to even the largest planet.

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As a result, when seen from the electron source, the spot on the screen will be deflected to the right.

The scanning electron microscope ( sem (TEM), the first type of electron microscope, produces images of the specimen by illuminating it with a high voltage electron beam. An electron gun is used to create the electron beam; typically, the electron source is a tungsten filament cathode.

Both high-energy collisions, such as those that occur when cosmic rays penetrate the atmosphere, and the beta decay or radioactive isotopes can produce electrons. The name "positron" refers to the electron's antiparticle, which is essentially the same as the electron with the exception that it has electrical charge that is in the opposite direction.

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Table G is a representation of y, or the distance Pamela rode riding bike in x minutes. Pamela's average speed is the rate at which she moves consistently. Average speed is calculated as total distance minus total

The total distance traveled must be divided by the total amount of time it took to complete that distance in order to determine average speed. Speed refers to a thing's rate of movement at a particular moment. The term  Average speed describes the speed that a journey will typically go at.

Understanding average speed will help you better comprehend the pace of a travel. On a travel, the speed could occasionally change. Finding the average speed then becomes crucial to getting an idea of how quickly the route will be finished.

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The maximum angle in degrees between the ladder and the frictionless  wall if the coefficient of static friction between the ladder and the ground is 0.3 is 59.1°

Forces in vertical direction,

Fy = m g

Forces in horizontal direction,

Fx = μ m g

Moment at bottom of the ladder,

Fx L sin θ - Fy L cos θ / 2 = 0

μ m g L sin θ - m g L cos θ / 2 = 0

tan θ = 1 / 2 μ

tan θ = 1 / ( 2 * 0.3 )

tan θ = 1 / 0.6

tan θ = 1.67

θ = 59.1°

Static friction is the frictional force of an object at rest. Once the object exceeds this force the object starts to move. The object will then have kinetic friction which resists its motion.

Therefore, the maximum angle between the ladder and the wall is 59.1°

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Accuracy of bullet in momentum  is 13.8758 * 10^-28 %

What is momentum ?

Momentum is defined as the product of a particle's mass and its velocity. Momentum is a vector quantity. It has both magnitude and direction. Isaac Newton's second law of motion states that the rate of change of momentum over time is equal to the force acting on a particle. See Newton's Laws of Motion. From Newton's second law, if a particle is subject to a constant force over a period of time, the product of that force and the time interval (momentum) equals the change in momentum. The momentum of a collection of particles is equal to the vector sum of their individual momentums.

According to Heisenberg uncertainty principle ..

( accuracy in momentum ) * ( accuracy in position ) = h / 4pi

momentum  = mass * velocity

so accuracy in momentum = accuracy in velocity * mass

for electron ,..

mass = 9.1 * 10^-31 kg ...

so accuracy in momentum = 9.1 * 10^-31 * accuracy in velocity = 9.1 * 10^-31  * 0.01 / 100  

so ... 9.1 * 10^-31  * 0.01 / 100    * ( accuracy in position )   = 6.626 *10^-34 / 4pi

so accuracy in position = 0.579428930  

accuracy  = 57.942893 %

for bullet ...

accuracy in momentum = 0.0460  * accuracy in velocity = 0.0460 * 0.01/100

so .. 0.048 * 0.01/100 * accuracy in position = 8.36 *10^-34 / 4pi

so accuracy in position = 13.8758 * 10^-30    = 13.8758 * 10^-28 %

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The force will be zero.

What is Newton's second law?

One of the most significant laws is the Newton's second law. F = ma, where F (force) and a (acceleration) are both vector values, can be used to represent a body whose mass m is constant.

The crate is not permitted that is relative to the surface before to the 600-N force being released.

It would move at no speed. Its acceleration would be 0 because its velocity isn't changing.

By combining, the 600-N force to the left and the 200-N force to the right, the combined force on the craft is equivalent to 400-N.

The resulting force acting on the crate would be zero according to Newton's Second Law. Friction, the only other horizontal force acting on the crate, ought to counteract the 400-N force.

In this instance, 400 N of friction should exert its force in the opposite direction.

Only the 200-N force to the right and friction would remain on the crate when the 600-N force is gone.

If there is to be any friction at all, it must be at least 200 N in order for there to be no net force. The static friction coefficient in this situation is unknown.

The precise value of the maximum friction on the crate cannot be determined as a result.

But keep in mind that there was 400 N of friction on the crate prior to the removal of the 600 N force. The box was nevertheless subject to the usual vertical diection force.

One can therefore be confident that the maximum force would be at least 400N to the right. That will balance the 200 N force adequately.

Therefore, the force on the crate could be zero, and the crate won't move.

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The answer of the question of force newton's second law will be zero.

What is Newton's second law?

One of the most significant laws is the Newton's second law. F = ma, where F (force) and a (acceleration) are both vector values, can be used to represent a body whose mass m is constant. The crate is not permitted that is relative to the surface before to the 600-N force being released. It would move at no speed. Its acceleration would be 0 because its velocity isn't changing.

The static friction coefficient in this situation is unknown. But keep in mind that there was 400 N of friction on the crate prior to the removal of the 600 N force. The box was nevertheless subject to the usual vertical diection force. One can therefore be confident that the maximum force would be at least 400N to the right. That will balance the 200 N force adequately.

Therefore, the force on the crate could be zero, and the crate won't move.

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The final kinetic energy will it have just before hitting the ground is 5.8755 KJ.

Mass of the ball, M = 40 kg

Height of the ledge, S = 15 m

Initial velocity, u = 0 m/s (at rest)

Using equation of motion we get,

V² = u² + 2aS

V² = 0 + 2 × 9.8 × 15

V² = 294

v = 17.14m/s

kinetic enrgy is calculated as :

E = 1/2 × mass × v²

for initial velocity (u =0) kinetic energy is

E = 1/2 × 40 × 0²

E = 0J

for final velocity (v) kinetic energy is :

E = 1/2 × 40 × (17.14)²

E = 5,875.5 J

E = 5.8755 KJ

The final kinetic energy will it have just before hitting the ground is 5.8755 KJ.

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The relative ability of a bonded atom to attract shared electron pairs is called its electronegativity. This ability increases as the size of the atom decreases because for a smaller atom the shared electrons will be closer to the nucleus.

The electronegativity of an atom is a measure of how strongly it attracts electrons to itself. The higher the electronegativity of an atom, the more it will pull electrons away from other atoms.The electronegativity of an atom increases as the size of the atom decreases. This is because the electrons are closer to the nucleus in a smaller atom, and the nucleus has a greater pull on the electrons.

The electronegativity of an atom also depends on the number of protons in the nucleus. The more protons an atom has, the greater the electronegativity. Electronegativity is an important property in determining the chemical properties of atoms and molecules. Atoms with high electronegativities will tend to form bonds with other atoms that have low electronegativities. This is because the high electronegativity atom will pull the electrons away from the other atom, making the bond between the two atoms stronger.

The electronegativity of an atom is determined by the ability of the atom to attract electrons to itself. The higher the electronegativity of an atom, the more it will pull electrons away from other atoms.The size of an atom plays a role in its electronegativity. Smaller atoms have a higher electronegativity than larger atoms because the electrons are closer to the nucleus. This means that the smaller atom can more easily pull electrons away from the larger atom.

The trend in electronegativity is that it increases as you go from left to right across the periodic table. This is because the atoms get smaller as you go from left to right. The smaller atoms have a higher electronegativity than the larger atoms.The trend in electronegativity is also that it increases as you go from bottom to top of the periodic table. This is because the atoms get closer to the nucleus as you go from bottom to top.

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Answer:

Yes, No, No

Explanation:

The calculated magnitude of force is 47.04 N. Second Law of Motion by Newton (Force) An object's acceleration is determined by its mass and the force being applied.

All objects on Earth experience weight, or a gravitational pull that is proportionate to their mass and is imposed by the planet's mass. The acceleration that gravity gives to objects falling freely serves as a gauge of its strength. The acceleration of gravity at Earth's surface is approximately 9.8 meters (32 feet) per second every second. The magnitudes of the object's weight and the normal force are equal when the object is resting on a horizontal surface and there are no other vertically acting forces; that is, Therefore, the normal force in this case is 26 N, which is much greater than the box's weight.

F=ma

F= 4.8 * 9.8

=47.04 N

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Robert pushes the box to the left at a constant speed. In doing so, Robert does zero work on the box.

While the speed of an item stays equal - it does not increase or lower - we say it's far shifting at a constant speed.

Regular movement is a sort of motion that takes place when both the gap traveled by means of the item is equal for every 2d or the rate of the item changes by way of the same amount every 2d. A car retains a pace of 20 meters according to second because it acts in a straight line for five seconds and is in consistent motion.

An object has a consistent speed while both the value and direction of the charge at which such an object is changing its role continue to be steady. In different words, for an object to have consistent speed, its movement has to no longer alternate guidelines through the years and the object should have steady speed as properly.

Calculation:-

we know that work done = force × displacement

and force = mass ×acceleration

here acceleration is always zero at a constant speed

So, force is also zero hence the work done is ultimately zero.

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Answer:

150m = total displacement

Explanation:

50*3=150m