A student mixed 100 mL of water at 20 degrees Celsius with 100 mL of water at 80 degrees Celsius. He briefly stirred the mixture for 10 seconds and measured the temperature. The measures temperature of the mixture of water was-- A. 25 Degrees C
B. 40 Degrees C
C. 50 Degrees C
D. 65 Degrees C

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.

The plum pudding model of the atom state that ?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration