As the of electromagnetic waves increases, so does their
a. frequency; energy
b. wavelength; energy
c. amplitude; wavelength
d. frequency; wavelength

If a clock aboard a space ship traveling at 0.900 c of the speed of light relative to earth chimes once at the beginning of the hour and again when it reads one hour later, how much time would an observer on earth say elapsed between the two chimes?

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).