Identify the names of animals that lived on earth before dinosaurs.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?