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Ilia_Sergeevich [38]
3 years ago
8

A car is being lifted by a crane so that it moves upwards at a constant speed.

Physics
1 answer:
anygoal [31]3 years ago
7 0

Answer:

Explanation:

Work done is defined as the product of force and the displacement in the direction of force.

W = F x d x Cos θ

Where, θ be the angle between force and the displacement.

The force of gravity acts downwards and the displacement is in upward, so the angle is 180. cos 180 = -1 , so the work done by the force of gravity is negative.

The force of rope acting in upwards direction and displacement also in upwards direction.

So, the work done is positive

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A plumber is going to put two pipes in a wall, one in front and one in back. The pipes will be touching once they are installed.
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Answer:

They become the same exact tempature

Explanation:

Since they got connected it should be the same.

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3 years ago
The unit of length most suitable for measuring the thickness of a cell phone is a . The unit of length most suitable for measuri
ArbitrLikvidat [17]

The answers include the following:

  • The unit of length most suitable for measuring the thickness of a cell phone is a meter.
  • The unit of length most suitable for measuring the height of a backyard tree is a meter.

<h3>What is Meter?</h3>

This is defined as the standard unit for measuring the length of a body and is denoted as m.

Height is a vertical type of length which is why meter was chosen as the most appropriate choice.

Read more about Meter here brainly.com/question/1578784

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4 0
2 years ago
11. A car travels at 25 m/s to the North. It has an acceleration of 2 m/s’ to the south
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Answer:

delta x= 100m

Explanation:

vi= 25 meters

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t=20s

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4 0
2 years ago
What phenomenon causes colors of visible light to be separated by a prism?
Allushta [10]
Dispersion im pretty sure
6 0
3 years ago
Which applications, either for diagnostic purposes or for therapeutic purposes, involve radioactive materials placed in the body
CaHeK987 [17]

When a radioactive material is required to be placed in the body, the applications are brachytherapy and radioisotope imaging.

Radioactive materials are elements which has the ability to disintegrate by emitting radioactive substance or radiation. A good example of this is Cobalt-60, Titanium-99 etc.

Brachytherapy is a therapeutic process in which radioactive material is inserted into the body in close proximity to the region affected. The radioactive material emits radiations which are required to control the unwanted biological material in the body. A good application of this is the treatment of cancer using Cobalt-60.

Radioisotope imaging is a diagnostic process which is an imaging technique that may require placing a radioactive material in the body so as to trace or locate the affected part of the body. In this case, the material is used as a tracing element.

The applications that require the placing of radioactive materials in the body are brachytherapy and radioisotope imaging.

For more explanation, visit: brainly.com/question/9790340

5 0
2 years ago
Read 2 more answers
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