At normal temperature and pressure, air has
1 answer:
You might be interested in
1) The area of a circle is given by
where r is the radius of the circle. In this problem, we are told that the area is
so we can rearrange the previous equation to calculate the radius:
And now we can find the circumference, by using the formula:
Therefore, the correct answer is D. 75.3984 meters.
2) The volume of a cube is given by:
where L is the length of the edge. In this problem, L=6 cm, therefore the volume of the cube is
and so, the correct answer is A. 216 cu. cm.
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;
- Weight (mg) = 200N
- Distance (s) = 3.5m
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
- work done = 700J
- Energy = 700J
- Power = 2800W or 2.8kW
Learn more on work done, energy and power here;