When an electron drops to a lower energy level in an atom, but no other interactions take place
A) the atom may emit a photon of light of a specific wavelength.
B) the total energy of the atom remains unchanged.
C) the atom must slow its speed moving through space.
D) the atom must increase its speed moving through space.
E) the electron must become slightly more massive.
A) the atom may emit a photon of light of a specific wavelength.
You might also like to view...
A parallel plate capacitor with circular plates having radius 0.07 m is used to store energy. If it is desired to store in this capacitor, what must the separation distance be for a voltage of 1.5 kV?
A. 0.64 cm B. 0.41 cm C. 2.5 cm D. 1.3 cm
Calculate the impulse due to a force of that lasts for
A) 6.3 kg? m/s B) 5.0 kg? m/s C) 5.7 kg? m/s D) 6.9 kg? m/s
Which of the following would be different for a person on the Moon rather than on Earth?
a. Weight b. Height c. Volume d. Mass
Identical particles are placed at the 50-cm and 80-cm marks on a meter stick of negligible mass. This rigid body is then mounted so as to rotate freely about a pivot at the 0-cm mark on the meter stick. If this body is released from rest in a horizontal position, what is the angular speed of the meter stick as it swings through its lowest position?
a. 4.2 rad/s b. 5.4 rad/s c. 4.6 rad/s d. 5.0 rad/s e. 1.7 rad/s