What do we use to spin magnets to supply the city of Portland electricity? a. power from the Columbia
b. gasoline power
c. solar power

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?

Which one of the following research methods can show cause and effect

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.