According to Einstein, increasing the brightness of a beam of light without changing its color will increase:
a. the number of photons.
b. the energy of each photon.
c. the speed of the photons.
d. the frequency of the photons.
a
You might also like to view...
Current: If a quantity you calculated has units of A ? s, what is that quantity?
A. potential B. resistivity C. resistance D. capacitance E. charge
If you are in the Earth's umbra on the Earth's surface, then
A) the Moon is always visible. B) it must be a lunar eclipse of some type. C) it must be a total solar eclipse. D) it is night time. E) the Sun is always visible.
An object moves 15.0 m north and then 11.0 m south. Find both the distance it has traveled and the magnitude of its displacement
A) 4.0 m, 26.0 m B) 26.0 m, 4.0 m C) 26.0 m, 26.0 m D) 4.0 m, 4.0 m
A particle (q = ?4.0 ?C, m = 5.0 mg) moves in a uniform magnetic field with a velocity having a magnitude of 2.0 km/s and a direction that is 50° away from that of the magnetic field. The particle is observed to have an acceleration with a magnitude of 5.8 m/s2 . What is the magnitude of the magnetic field?
a. 5.3 mT b. 4.9 mT c. 5.1 mT d. 4.7 mT e. 3.6 mT