a 6.0-kg box slides down an inclined plane that slopes 39 degree o to the horizontal. the coefficient of kinetic friction between the box and the plane is 0.20. at what rate does the box accelerate down the slope?

Atransverse wave is traveling on a string stretched along the horizontal x-axis. the equation for the vertical displacement y of the string is given by y = (1.8 x 10-3)cos[π(13x - 60t)], where all quantities are in si units. what is the maximum speed of a particle of the string

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.