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Lina20 [59]
2 years ago
6

a box is pushed 40 m by a mover. the amount of work done was 2,240 J. How much force was exerted on the box

Physics
1 answer:
Katyanochek1 [597]2 years ago
3 0
56 is da answer u has divided
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What r semiconductors?
KengaRu [80]
It is a solid substance that has a conductivity between that of an insulator and that of most metals, either due to the addition of an impurity or because of temperature effects
5 0
2 years ago
A spaceship is headed toward Alpha Centauri at 0.999c. According to us, the distance to Alpha Centauri is about 4 light-years. H
aniked [119]

Answer:

According to the travellers, Alpha Centauri is <em>c) very slightly less than 4 light-years</em>

<em></em>

Explanation:

For a stationary observer, Alpha Centauri is 4 light-years away but for an observer who is travelling close to the speed of light, Alpha Centauri is <em>very slightly less than 4 light-years. </em>The following expression explains why:

v = d / t

where

  • v is the speed of the spaceship
  • d is the distance
  • t is the time

Therefore,

d = v × t

d = (0.999 c)(4 light-years)

d = 3.996  light-years

This distance is<em> very slightly less than 4 light-years. </em>

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3 years ago
Which list of observations is the best evidence of only a chemical change occurring?
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d

Explanation:

7 0
3 years ago
1. Spring force is proportional to stretch distance, F=kd. Do you expect doubling the stretch distance double the force?
Solnce55 [7]

Answer:

Yes

Explanation:

The spring force is given as:

          F  = kd

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 Since k is a constant, therefore, doubling the stretch distance will double the force.

Both stretch distance and force applied can be said to be directly proportional to one another.

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2 years ago
Which law states that energy is neither created nor destroyed? a. Law of Conservation of Mass
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Answer:

C. Law of Conservation

7 0
2 years ago
Read 2 more answers
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