An airplane is flying west at 690 kph. The wind is blowing north at 65 kph. Add the two vectors to determine the final velocity.
A. 625 kph to the west
B. 625 kph to the north
C. 693 kph to the northwest
D. 755 kph to the northwest

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

Based on this activity, is kinetic energy always transformed into potential energy?