If the mass of a material is 48 grams and the volume of the material is 8 cm^3, what would the density of the material be?

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

Select the three ways that the parallel-plate capacitor differs from a car battery.

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)