An aluminum sheet is compressed to a thickness of 2.0 microns. if each cubic centimeter of aluminum has a mass of 2.70 g, what is the mass of an aluminum sheet, in grams, if its total surface area is 5 m2

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.

Can you receive a shock severe enough to prevent you from releasing the wire from an ordinary outlet with dry hands? a. no b. yes explain