What are the three properties of all magnets

Calculate the force of gravity on the same 1 kg mass if it were 6.4x10^6 m above earth's surface

In which of the following materials is the velocity of light greatest a. Water B. Fused quartz C. Air D. Crown d. glass

What does the ozone layer protect us from? A. supersonic rays B. gamma rays C. ultraviolet rays D. light rays

How are aquatic ecosystems classified?

A 1200-kg car moving at 14 m/s collides completely inelastically with a 4500-kg truck at rest. Since the collision is completely inelastic, the car and the truck stick together and move as a single object after the collision.

Element X has a mass number of 40 and an atomic number of 20, and element Y has a mass number of 56 and an atomic number of 26. Element X has more neutrons and fewer electrons than element Y. more neutrons and electrons than element Y.

How does mass affect average speed?

Object A attracts object B with a gravitational force of 10 newtons from a given distance. If the distance between the two objects is doubled, what is the changed force of attraction between them? A. 2.5 newtons B. 5 newtons C. 20 newtons D.

A small particle starts from rest from the origin of an xy-coordinate system and travels in the xy-plane. Its acceleration in the x-direction is 2.0 m/s2, and its acceleration in the y-direction is 1.0 m/s2.

What is a circuit, s resistance if 12v produces 2A of current?