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4 years ago

Why do scientists conduct experiments ?

1 answer:

8 0

Scientists conduct experiments in order to prove a theory or a prediction they have or contradict it, so that then they can write down their results to study them.

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Two spaceships are observed from earth to be approaching each other along a straight line. Ship A moves at 0.40c relative to the

nirvana33 [79]

Answer:

0.80 c

Explanation:

The computation of speed is shown below:-

Here, The speed of the captain ship A report for speed of the ship B which is

$S = \frac{S_A + S_B}{1 + \frac{(S_AS_B)}{c^2} }$

where

$S_A$ indicates the speed of the ship A

$S_B$ indicates the speed of the ship B

and

C indicates the velocity of life

now we will Substitute 0.40c for A and 0.60 for B in the equation which is

$S = \frac{0.40c + 0.60c}{1 + \frac{(0.40c)(0.60c)}{c^2} }$

after solving the above equation we will get

0.80 c

So, The correct answer is 0.80c

5 0

3 years ago

What happens to gravitational potential energy as a rollercoaster moves down a hill? Question 4 options: It is converted to elas

inysia [295]

The gravitational potential energy as a rollercoaster converts to kinetic energy when it moves downhill.

<h3>What is kinetic energy?</h3>

The kinetic energy of an object or body is due to its motion. When the roller coaster moves downhill it accelerates, thus the gravitational potential energy as a rollercoaster converts to kinetic energy.

The gravitational potential energy of an object or body is due to its position above the ground.

Therefore, the gravitational potential energy as a rollercoaster converts to kinetic energy when it moves downhill.

Learn more about kinetic energy:

brainly.com/question/1250558

5 0

3 years ago

GalinKa [24]

Answer:

Explanation:

It would be diffrent if on a downward slope but assuming your going straight it would be the smallest student.

3 0

3 years ago

You drop a rock off of a cliff at exactly the edge after 25 seconds exactly you hear a splash your physics friend tells you the

Reptile [31]

The speed of sound is 340.29 meters per second.

Knowing that, we can calculate how high this cliff is by 340.29 * .4

The cliff is 340.29 * .4 = 136.12 meters

8 0

4 years ago

HELP ME PLEASE !!

kakasveta [241]

Answer:

B 20 sec

Explanation:

if you look at 1992 you can see that it is on 20 sec

4 0

3 years ago