Jackie who is 20 kg slides down a playground slide that is 10 m high. If she comes to the bottom with a speed of 5.0 m/s, how much energy is lost as heat? Show work.

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

What can you increase the strength of an electromagnet by

Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.