Bohr's quantum condition was
A)
angular momentum is quantized.
B)
energy is exchanged when changing state.
C)
a photon is emitted as a quantum of energy
D)
electron orbits are stationary states.
E)
none of the above.
Question 2
A net force exerted on an object opposite to the object's direction of motion decreases it speed and its kinetic energy.
Indicate whether the statement is true or false
