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4 years ago

The temperature of a substance is _________

Physics

1 answer:

emmainna [20.7K]4 years ago

6 0

The answer is B.
Temperature is just another term for the average kinetic energy of a substance.

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A block with a weight of 620 N is pulled up at a constant speed on a very smooth ramp by a constant force. The angle of the ramp

GuDViN [60]

The work done by the force in pulling the block all the way to the top of the ramp is 3.486 kJ.

Work done is equal to product of force applied and distance moved.

Work = Force x Distance

Given is a block with a weight of 620 N is pulled up at a constant speed on a very smooth ramp by a constant force. The angle of the ramp with respect to the horizontal is θ = 23.5° and the length of the ramp is l = 14.1 m.

From the Newton's law of motion,

ma =F-mg sinθ =0

So, the force F = mg sinθ

Plug the values, we get

F = 620N x sin 23.5°

F = 247.224 N

Work done by motor is W= F x d

The force is equal to the weight F = mg

So, W = 247.224 x 14.1

W = 3.486 kJ

Thus, the work done by the force in pulling the block all the way to the top of the ramp is 3.486 kJ.

Learn more about Work done

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7 0

2 years ago

4. A train starts its journey and accelerates at 5 ms 2. How long does it take for it to reach a velocity of 100 ms??

Agata [3.3K]

Answer:

20 seconds

Explanation:

6 0

4 years ago

Read 2 more answers

The palm of sheilas hand has an area of 0.0017 m2. If the atmospheric pressure on the palm is 100,000 Pa, what force is being ex

Serjik [45]

Answer:

170 N

Explanation:

F=pressure(pa) ÷ area(m^2)

=100.000 ÷ 0,0017

=170 N

8 0

2 years ago

An electric charge in a magnetic field will experience no force if the charge is moving _______ to the field.

BlackZzzverrR [31]

Answer:

Parallel

Explanation:

An electric charge in a magnetic field will experience no force if the charge is moving parallel to the field.

6 0

3 years ago

Read 2 more answers

Define distance and displacement with illustration

Deffense [45]

Answer:

<h2>Distance</h2>

The length of the actual path travelled by a body is called distance travelled by a body.It is a scalar Quantity.It is measured in meter(m) in SI system.

<h2>Displacement</h2>

The shortest distance from initial position to the final position of a body is called displacement of the body.It is a vector Quantity.It is measured in meter(m) in SI system..

Please see the attached picture...

It is the example of distance and displacement....

Hope this helps...

Good luck on your assignment...

3 0

3 years ago