What is the kinetic energy of the emitted electrons when cesium is exposed to uv rays of frequency 1.20×1015hz ?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Which characteristics can be used to differentiate star systems? check all that apply.

What does the symbol (–hfus) indicate in a phase change?