Consider a single photon with a wavelength of λ, a frequency of ν, and an energy of e. what is the wavelength, frequency, and energy of a pulse of light containing 100 of these photons?
a) 100λ, 100ν, and e
b) 0.01λ, ν, and 100e
c) λ, ν, and 100e
d) 0.01λ, 0.01ν, and 0.01e
e) 100λ, 100ν, and 100e

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?