You lift a 30 N crate 2 meters onto a shelf. it takes you 5 seconds to accomplish this. how much gravitional potential energy does the crate gain

A 1-kg model airplane has 98 J of gravitational potential energy. What is the airplane's height?

What is the only part of a motor through which a current does not flow

The average distance from earth to the sun is equal to one

How do human break N2 into a useable form

A cat, walking along the window ledge of a new york apartment, knocks off a flower pot, which falls to the street 280 feet below.

How to indicate kinetic energy

During induction, a positively charged rod is brought near to but not touching the electroscope. The presence of the charged object above the plate of the electroscope induces charges to move down into the gold leaves, giving the electroscope an

You are operating a boat with a power ventilation system. you have just fueled this boat. how long should you let the ventilation system run before starting the engine?

The force on a current-carrying wire is a maximum when the current is moving parallel to a magnetic field. true or false

In 1999, what percentage of 36-month-old toddlers had been toilet trained? 20 percent 40 percent 60 percent 80 percent