Beyond what point must an object be squeezed for it to be a black hole? a : schwarzschild radius. b : crackpoint. c : event horizon. d : hawking boundary.

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?