The reason an astronaut in the orbiting international Space Station Feels weight

Question

The reason an astronaut in the orbiting international Space Station Feels weightless and floats around inside the space station is that the astronaut is beyond the rang of the earth's gravity. The astronaut's accelerations is zero. The astronaut is at a point in space where the effects of the moon's gravity and the earth's gravity cancel the astronauts velocity is zero. The astronaut is in free-fall. How much elastic potential energy can be stored in s spring with a spring constant of 270N/m if the maximum allowed stretch is 17 cm? 39000j 46j 16j 390j 4600j It takes about 15 kilojoules of energy to melt an ice cube A typical microwave oven produces 800W W of microwave power. How long will it take a typical microwave oven to melt an ice cube?

Explanation / Answer

this is due to net Weught balances with the net gravitation

so the person feels Weightess ness

so option D it

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2. use the formula EPE = 0.5 kx^2

U = 0.5 * 270 * 0.17 * 0.17

U = 3.9 J

no correct option

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3. Power P = eenrgy/time

time t = E/P

t = 15000/800

t = 19 secs

option A

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