If the period of a mass spring oscillator is 8πs and the spring constant is 2 n/m, how much mass is attached?
a. 32 kg
b. 24 kg
c. 16 kg
d. 28 kg

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?

How is zig zagging a form of acceleration?

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon