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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Two astronauts have deserted their spaceship in a region of space far from the gravitational attraction of any other body. Each has a mass of 100kg and they are 100m apart. They are initially at rest relative to one another. How long will it be before the gravitational attraction brings them 1 cm closer together?

Two astronauts have deserted their spaceship in a region of space far from the gravitational attraction of any other body. Each has a mass of 100kg and they are 100m apart. They are initially at rest relative to one another. How long will it be before the gravitational attraction brings them 1 cm closer together?

The P−V diagram of 2 gm of helium gas for a certain process A→B is shown in the figure. What is the heat given to the gas during the process A→B?