A 2kg object is moving horizontally with a speed of 4 m/s. how much force is required to keep the object moving at this speed and in this direction? explain.

Two parallel metal plates are at a distance of 8.00 m apart. The electric field between the plates is uniform directed towards the right hand and has magnetic field of 4.00 N/C. If an ion of charge + 2e is released at rest at the left hand plate.

What type of plate boundry is located at the mid ocean ridges

A space shuttle in orbit around the earth carries its payload with its mechanical arm. suddenly, the arm malfunctions and releases the payload. part a what will happen to the payload?

CFC, Freon, and aerosols are becoming less commonly used because they A) cause acid rain. B) harm the ozone layer. C) have radioactive waste. D) cause Alzheimer's disease.

A box took 5 minutes to move you did 2150 j of work in the process. how much power was required to move the box

A star may form a black hole once it cannot?

Kai was 200 meters north of the library when he remembered he had to return some books to the library. It took him 200 seconds to do the round trip. Which best describes Kai's roundtrip?

The engine that powers a crane burns fuel at a temperature of 1500 oC. It is cooled by air at a temperature of 20 oC. The crane is used to lift a 1000 kg steel girder 30 m into the air.

The portion of a light ray that falls on a surface is a/an

Give the definition for diffusion. (A) gas molecules mix unequally average distance between collisions (B) gas molecules escape from a container into a vacuum through a small hole (C) gas molecules mix equally (D) gas molecules spread out in a