It's by number of protons
Answer:
<h3>The answer is 20,000 J</h3>
Explanation:
The work done by an object can be found by using the formula
<h3>workdone = force × distance</h3>
From the question
force = 400 N
distance = 50 m
We have
work done = 400 × 50
We have the final answer as
<h3>20,000 J</h3>
Hope this helps you
75 kg/m/s^2. Momentum = mass x velocity
Answer:
Question 1 the answer is 5 cm for the one pulley system, I just took the quiz
Question 2 is 10 cm
Explanation:
The rope only needs to move 5 cm for the mass to move from 15 to 20.
For the 2 pulley system the string has to move twice as far making it 10 cm. I took the quiz and got 100%