There is a bell at the top of a tower that is 45 m high. The bell weighs 19 kg. How many joules of energy does the bell have?

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

it was given as a lesson and guide for prayer.

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it