Explanation:
a) Power = work / time = force × distance / time
P = Fd/t
P = (85 kg × 9.8 m/s²) (4.6 m) / (12 s)
P ≈ 319 W
b) P = Fd/t
0.70 (319 W) = (m × 9.8 m/s²) (4.6 m) / (9.6 s)
m = 47.6 kg
Answer:
The answer is D.
Explanation: The northern hemisphere is more cooler, because it doesn't have much sunlight to warm it up.
Answer:
The average speed of the elevator going down in the abandoned mine is 17.722mph.
Explanation:
If the elevator takes 90 seconds to descend a height of 713m, the average speed of the elevator is:
And if 1m/s is 2.23694mph, the average speed is:
.
Cccccccvvvvvcjjjjjjjjjjkllk ki e
Answer:
6.04788 in
78.38779 m/s
0.88159 kg
34.55294 J
Explanation:
Circumference is given by
Diameter is given by
The diameter is 6.04788 in
Volume of sphere is given by
The volume is
Fall velocity is given by
The velocity of the fall will be 78.38779 m/s
Mass is given by
The mass is 0.88159 kg
Kinetic energy is given by
The kinetic energy is 34.55294 J