What happens when an atom is exposed to an energy source such as electricity?

the electrons may jump to a higher energy level.
the electrons move closer to the nucleus.
the electrons may move to a lower energy level.
the electrons emit a continuous spectrum.

Which one of the following terms is used to indicate the natural tendency of an object to remain at rest or in motion at a constant speed along a straight line? velocity acceleration equilibrium force inertia

Of is j/kg·k. if a 2.6 kg of isk to k,is ?

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 3.00 ms . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?