Part B vz = 13 m/s , Vy = = 31 m/s. Find the vector's direction.
Express your answer in degrees.
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If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

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.