Answer:
If an object has a high density then the molicules making up that object are closly packed togeather. Because of this, objects with a higher density will have more mass than objects of the same size that have a lesser density.
Answer:
The moon Phobos orbits Mars
(mass = 6.42 x 1023 kg) at a distance
of 9.38 x 106 m. What is its period of
orbit?
Explanation:
Answer: 27.9816 x 10^3 is the period of orbit
The speed of light is......299 792 458 m / s
Answer:
A. The mechanical energy transforms to thermal energy as the pendulum slows and eventually stops moving.
Explanation:
took the quiz on edge
Answer:
The average power is calculated as 735.0 W
Solution:
As per the question:
Total mass, M = 1200 kg
Counter mass of the elevator, m = 950
Distance traveled by the elevator, d = 54 m
Time taken, t = 3 min = 180 s
Now,
To calculate the average power:
First, we find the force needed for lifting the weight:
Force, F = (M - m)g = ![(1200 - 950)\times 9.8 = 2450 N](https://tex.z-dn.net/?f=%281200%20-%20950%29%5Ctimes%209.8%20%3D%202450%20N)
Now, the work done by this force:
W = Fd = ![2450\times 54 = 132300\ J = 132.3\ kJ](https://tex.z-dn.net/?f=2450%5Ctimes%2054%20%3D%20132300%5C%20J%20%3D%20132.3%5C%20kJ)
Average power is given as:
![P_{avg} = \frac{W}{t} = \frac{132300}{180} = 735.0\ W](https://tex.z-dn.net/?f=P_%7Bavg%7D%20%3D%20%5Cfrac%7BW%7D%7Bt%7D%20%3D%20%5Cfrac%7B132300%7D%7B180%7D%20%3D%20735.0%5C%20W)