A 40-kilogram crate is at rest on a level surface. If the coefficient of static friction between the crate and the surface is 0.69, what horizontal force is required to get the crate moving?

What is the frequency if a wave that pases a given pount 22 times in 2 seconds

what are the various ways in which lithospheric plates interact with each other as they move around on a dynamic earth?

A student lifts a 90 pound (lb) ball 4 feet (ft) in 5 seconds (s). How many joules of work has the student completed? A) 770J B) 369J C) 488 ft lbs D) 488.6 J

How will frost on the wings of an airplane affect takeoff performance?

Does Iron repel or attract the South Pole of a magnet?

A British newspaper was interested in whether groups of people who differed in social standing were treated differently when they complained to organizations about poor service they had received.

During combustion, a fuel's electromagnetic energy is converted into thermal energy.

Explain why glucose is important to a cell

4. How far does a car travel in 90 seconds if it is traveling at a speed of 55 m/s?

Total energy input is 1400 and my efficiency is 80% so what is the useful energy output in jules?