Force of gravity does the crane do on the ball
A crane lifts a ball weighing 2 x 10^4 N by 40 m in 2 seconds.
A) How much work against the force of gravity does the crane do on the ball?
B) how much power is necessary to perform this work?
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A drop of water has a volume of .05 mL. If the density of water is 1.0g/mL, how many molecules of water are present in the drop? The gram molecular weight is 18.016.
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A crane lifts a ball weighing 2 x 10^4 N by 40 m in 2 seconds. A) How much work against the force of gravity does the crane do on the ball?
The initial temperature of the plate and the cooling air temperature are 295 K when 300 W of power are switched on. 1) Find the plate temperature after 10 minutes, Find the steady temperature of the components.
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A small metal ball with a mass of 4.0 g and a charge of 5.0 mC in located at a distance of 0.70 m above the ground in an electric field of 12 N/C directed to the east. The ball is then released from rest. What is the velocity of the ball after it
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