Demagnetize

Which events cause ferromagnetic materials to magnetize and which events cause them to demagnetize?

A stuntman jumps from the roof of a building to the safety net below. How far has the stuntman fallen after 2.3 seconds? A. 25.9 m B. 21.2 m C. 9.8 m D. 11.3 m

Which of the following is equal to the boyant force of a rock placed in a beaker of water? A) volume of the displaced fluid B) weight of the displaced fluid C) volume of the rock D) weight of the rock

Calculate the kinetic energy in joules of a 10 g bullet moving in 300 m/s

A northfield raider defensive back runs 20 m in 2.5 s what's the average speed

What can you use to unscrew a tiny screw?

What should a free-body diagram look like for a skydiver that is still speeding up as he falls? There is an arrow up for air resistance and an arrow down for gravity. The arrows are the same length.

As a rocket moves farther and farther upward from the launch pad, what happens to the strength of Earth's gravitational field around the rocket? a. It gets weaker. b. It grows stronger. c. It remains constant.

Sully uses a battery and a coil of wire to create an electromagnet. Using the same materials, if he wants to increase the strength of his electromagnet, he must the number of loops in the coil of wire along its length.

How long does it take for light from a star that is 8 light years away to reach Earth? Question 7 options: 8 earth minutes 16 earth minutes 8 earth years 16 earth years

Why does water in hot springs always remain hot? Why doesn't it's thermal energy spread out?