The general formula for kinetic energy is k = 0.5mv2 where k = kinetic energy, m = mass, and c = velocity. solve k = 0.5mv2 for v
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Ответ:
k = kinetic energy
m = mass
v = velocity
0.5 = 1/2
solve for v.
k = 1/2 * m * v²
(k * 2) / m = v²
√(2k/m) = √v²
√(2k/m) = v
There should have been a list of choices included in this problem.
v = √(2k/m)
Ответ:
Levitating balloons demonstrates Bernoulli's principle becuase Bernoulli's principle states that as air moves around an object, it creates different pressures on that object. Faster air means less pressure. Slower air means more pressure. As I blow over the paper, the air on the top is moving faster than the air on the bottom. According to Bernoulli's principle, this faster moving air on the top has a lower pressure than the non-moving air on the bottom. When the paper gets too high, it gets into the air stream which pushes it back down. So the answer would be A: Higher pressure, lower speed air is on the OUTSIDE of the balloon.