10 POINTS! I WILL MARK BRAINLIEST After a bonfire its important to separate any unburned materials before disposing of the ashes.
We can do some of this using a magnet.

Explain why steel nails are attracted to the magnet, but a material such as copper wire would be left
in the ashes,

Write at least 3 sentences in your response.

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?

Idon’t quite understand this problem