Sliding friction between two objects that are moving past each other can be increased by: a. putting sand between the objects b. putting oil between the objects c. putting ice between the objects d. putting wax between the objects

As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?