What is the electric force acting between two charges of -0.0080 C and 0.0050 C that are 0.035 m apart? Use Fe and k = 9.00 x 109 N•m2/C2.

How does convection affect our atmosphere? our layers of earth? our oceans?

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n