A crane lifts a 35,00-N steel grinder a distance of 25m in 45s. How much power did the crane require to life the grinder? Write your answer in Kilowatts.

A capacitor is charged to a potential difference of 3 volt it delivers 30% store energy to lamp what is the final potential difference across the capacitor

You are presented with several wires made of the same conducting material. The radius and drift speed are given for each wire in terms of some unknown units r and v. Rank the wires in order of decreasing electron current.

How does friction affect the energy in a closed system of moving parts?

A cyclist rides down a long straight road at a velocity (in m/min) given by v (t) equals400minus20 t, for 0less than or equalstless than or equals10. a. How far does the cyclist travel in the first 6 min? b.

An iron cube has sides that measure 0.5 meter. The cube is cooled from 95°C to 75°C. What is the change in its volume?

Which of the following atoms do not usually form bonds

The red LED consists of a white LED covered with a red filter. What does the red filter do?

What is the net force acting on a 10 kg freely falling object?

A comet is a A. meteoroid that travels through Earth's atmosphere and hits the surface. B. meteoroid that burns up in Earth's atmosphere, producing a streak of light. C.

Can Someone explain the steps for this? A lovesick lad wants to throw a bag of candy and love notes into the open window of his girlfriend's bedroom above. Assuming it just reaches the window, he throws the love gifts at 16.