The free body diagram below represents a balloon released from a student's hand so that the air can escape. Based on this diagram, the balloon must be.
A. Accelerating down
B. moving at a constant speed, not accelerating
C. accelerating left
Stationary, not moving at all
D. accelerating to the right
E. accelerating up

Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)

Which composition of water moves to begin a deepwater current?

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).