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Kryger [21]
3 years ago
12

A man applies a force of 100 N to a rock for 60 seconds, but the rock does not move what is the amount of work done by the man o

n the rock?
Physics
1 answer:
Art [367]3 years ago
6 0
600. I forgot the measurement. but 600 is correct
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Pls help me l will make it brainlest ​
nikklg [1K]

Answer:

<u>0.04 °C⁻¹</u>

Explanation:

First, we need to calculate linear expansivity, then after finding that value, we can move on to finding the area expansivity.

<u />

=============================================================

Finding Linear Expansivity :

⇒ α = Final length - Original length / (Original length × ΔT)

⇒ α = 9 - 4 / (4 × 70 - 20)

⇒ α = 5 / 5 × 50

⇒ α = <u>0.02</u>

============================================================

Finding Area Expansivity :

⇒ Area Expansivity = 2 × Linear Expansivity

⇒ β = 2 × α

⇒ β = 2 × 0.02

⇒ β = <u>0.04 °C⁻¹</u>

3 0
1 year ago
Read 2 more answers
How can you describe the motion of an object in a race?
Hitman42 [59]
You can describe the motion of an object by its position, speed, direction, and acceleration
4 0
2 years ago
The speed of sound is 346 m/s. If a sound wave travels at a frequency of 55 Hz, what would its wavelength be?​
Korvikt [17]

Answer:

6.29 meters.

Explanation:

, where v is the speed of wave and f is the frequency of wave.

We are given that ,

The speed of sound is 346 m/s.

i..e v=346 m/s

A sound wave travels at a frequency of 55 H.

i..e f=55

the wavelength would be 6.29 meters.

This is based on another brainly answer

Link: brainly.com/question/12538018

3 0
2 years ago
A small lab cart and one of larger mass collide and rebound off each other. Which of them has the greater average force on it du
Elza [17]

When a small cart collide with a large mass then during collision they must be in contact with each other for some interval of time

During this contact interval we can say they will exert normal force on each other

This normal force is always equal and opposite on two balls which means this force will follow Newton's III law

It will be same in magnitude but opposite in the direction

So here correct answer would be

<u><em>They both experience the same magnitude of the collision force.</em></u>

4 0
2 years ago
the two rotating systems shown in the figure differ only in that the two identical movable masses are positioned at different di
svetoff [14.1K]

Answer: the block at the right lands first

Explanation:

7 0
3 years ago
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