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A boy of mass 30.3 kg, jumps off a diving platform2.38 m high. He lands in the water and goes under a distance1.48 m, before he stops.
a: What is the boys initial potential energyusing the lowest point he reaches as the reference height(h=0)?
b: What is the boy's velocity when he hits the water?
c: What is the magnitude of the resistive forceof the water on the boy?
the membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space.
Thunder is heard 4.0 sec after the flash of lightning is observed. If the outside temperature is 15 degrees celsius, how far away was the lightning bolt
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