Which ray of sunlight is going to heat up Earth the most at the location that it strikes and why? They will all heat the Earth up the same amount
Sunray X, it is indirect
Sunray Y, it is more direct
Sunray Z, it is in the southern hemisphere

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.

A200 g lead frying pan gains 2000 joules of heat. what is the change in temperature