A block attached to an ideal spring oscillates horizontally with a frequency of 2.0 Hz and amplitude of 0.25 m. The spring constant is 75
What is the mass of the block?

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?