A 2.0-kg ball rolling along a flat surface starts up a hill. If the ball reaches a height of 0.63 m, what was it's initial speed?

Mention any 5 disadvantages of friction.

What 3 things can an object with unbalanced forces do?

Which is not a unit of heat? joule British Thermal Unit calorie kelvin

An object with 10 protons 14 electrons and 5 neutrons would have what charge

What is the Doppler effect?

A sample of blood is placed in a centrifuge of radius 12.0 cm. The mass of a red blood cell is 3.0 ✕ 10^-16 kg, and the magnitude of the force acting on it as it settles out of the plasma is 4.0 ✕ 10^-11 N.

A guitar string produces 3 beats/s when sounded with a 352-hz tuning fork and 8 beats/s when sounded with a 357-hz tuning fork.

4. The amount of distance you need to stop the car increases with specu. A. true B. false

What are the three most abundant gases in the dry atmosphere?

What happens when you open a soda? Why?