Two astronauts are floating in gravitational free space after having lost contact with their spaceship.

Correct Answer - 27MV

1. For an astronaut, in a satellite, the net force towards the centre of the Earth will always be, F = mg – N. where, N is the normal reaction.  2....

Where is the blue sky, where is the green garden? Skyscrapers have eaten them all. Everything is modern, comfort scattered everywhere, But alas! are we happier in the absence of nature?

1. Assuming absence of stars in the vicinity, the only gravitational force exerted on astronaut is by the spaceship. 2. But this force is negligible. 3. Hence, once astronaut is out of...

Correct answer is (B) 9 × 109 N

1. In terms of potential, we can write the potential energy of the Earth-mass system as, Gravitational potential energy (U) = Gravitational potential (Vr) × mass (m) 2. Thus, gravitational potential is...

Given: m = 80 kg, U = 5 × 109 J To find: Gravitational potential (V) Formula: V = \(\frac{U}{m}\) Calculation: From formula, V = \(\frac{5\times10^9}{80}=\frac{25}{4}\) × 107 = 6.25 × 107 J kg-1 Potential of the body at the surface...

Correct option is: (A) 35 °C

Correct option is C) equal

C) any of the above two cases