Answer:
C
Explanation:
Power is work divided by time:
P = W / t
Work is force times distance:
W = F d
Therefore:
P = F d / t
Given that F = 500 N, d = 60 m, and t = 240 s:
P = 500 N * 60 m / 240 s
P = 125 W
Answer is C.
Mercury,Venus,Earth and Mars
Because we can send high voltage, low current which is more efficient since large amounts of current in the line causes power inefficiencies. AC can be transformed locally to high current lower voltage
Answer:
-200°C
Explanation:
This is because at -200°C the temperature is below -196°C and above -210°C .Thus Nitrogen can be in liquid state.
