Physics, 13.02.2022 03:10 IzzybellaRamilo
A care package that is released from a helicopter for flood victims initially has 2500 J of gravitational potential energy and no kinetic energy. The package is simply dropped, not pushed. At a lower height, the object has 725 J of potential energy
and 1135 J of kinetic energy.
a) Is energy conserved in this situation? How can you tell?
Answers: 2
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Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c.what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?
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A care package that is released from a helicopter for flood victims initially has 2500 J of gravitat...
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