Answer:
8.97 days
Explanation:
Assuming we are asked what will be the period of revolution, this planet's year, in Earth days?
The period of revolution T is given as
here, r= distance between planet and its sun which is same as distance between Earth-Sun =
g= acceleration due to gravity =
therefore,
=775580 seconds
= 8.97 days
The work done on the boxes and the energy spent is 700J while the power required to lift 4 boxes per minute is 2.8kW
This work done on an object is the force required to move that object from point A to point B.
Data Given;
This is the work done to move the boxes from point A to point B.
The work done to move the object is 700J
<h3>Energy</h3>This is used to calculated the energy used to carry the work done and the formula is given as
The energy transferred when he lifts one box is 700J
<h3>Power</h3>Power is the rate at which energy is used with respect to time
The energy required to lift 4 boxes in one minutes is
Now we can calculate the power used
The power required to move four boxes in 1 minutes is 2.8kW
From the calculations above, the following was gotten
Learn more on work done, energy and power here;