( ignore air resistance and gravity ) During a flood a tree truck of mass 100 kg falls down a waterfall. The waterfall is 5 m
high. Calculate..
a) the potential energy of the tree trunk at the top of the waterfall.
b) the kinetic energy of the tree trunk at the bottom of the waterfall.
c) the velocity of the tree trunk at the bottom of the waterfall.

Calculate the velocity of a car traveling in a straight path due east with a distance of 16 meters in 2 seconds. question 1 options: a)32 m/s b)32 m/s e c) 8 m/s e d) 8 m/s

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).

What is the technical name for super glue type adhesives?