The electron and proton of a hydrogen atom are separated, on average, by distance of about 5.3x10-11 meters. find the magnitude of the electric force and the gravitational force that each particle exerts on another.
mass of electrons= 9.109x10-31
mass of protons= 1.673x10-27
charge of electron=-1.60x10-19
charge of protons= 1.60x10-19

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

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.

Aheat engine that operates on a carnot cycle has an efficiency of 0.420 when its low-temperature reservoir is at 10 ∘c.part aby how many degrees celsius must you increase the temperature of the high-temperature reservoir to increase the efficiency to 0.600 if you continue to use the same low-temperature reservoir?