what is the difference in gravitation potential energy when a 3.5 kg box is raised from a height of 1.2m to height of 4.0m?

When you answer someones question how do you make it so your answer is verified?

A dielectric material such as paper is inserted between the plates of a capacitor as the capacitor holds a fixed charge on its plates. What happens to the electric field between the plates as the dielectric is inserted?

Is the following sentence true or false? The three main types of mechanical waves are water waves, longitudinal waves, and surface waves.

A sheet of glass is coated with a 500-nm-thick layer of oil (n = 1.42). a. For what visible wavelengths of light do the reflected waves interfere constructively? b.

Arrows to order the list and then click "submit." The same person performs all the activities listed below.

Stable system where forces cancel eachother out

A 1000-kg car is traveling north at 20.0 m/s. A 1500-kg car is traveling north at 36.0 m/s. The 1500-kg collides with the rear of the 1000 - kg car and they lock together.

9. (True or False) During an early morning rain shower, Jim could see a rainbow to the north as the sun's rays in the east broke through the clouds, illuminating the landscape.

Is sugarcane renewable or nonrenwable and why

during a crash, an airbag inflates to stop a dummys forward motion. the dummy mass is 75 kg. if the net force is on the dummy is 825 N toward the rear of the car, what is the dumys deceleration