If the mass of one object is doubled and mass of other remains the same and if distance between them is halved then how does the gravitational force change?

6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.

Work = force × a. work b. energy c. distance d. momentum

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?