An astronaut inside a small space ship orbiting around the earth cannot detect gravity. If the space station orbiting around the earth has a large size, can he hope to detect gravity?
When an artificial satellite, orbiting around earth, moves closer to earth, its potential energy decreases because of the reduction in the height. Since the total energy of the system remains...
(b), (c), and (d)
Legs hold the entire mass of a body in standing position due to gravitational pull. In space, an astronaut feels weightlessness because of the absence of gravity....
(d) will depend on direction of projection.
EXPLANATION:
Its minimum escape speed will be vₑ when projected vertically upward, but if projected otherwise the speed will be greater. So the escape speed will depend on...
(b) decrease
EXPLANATION:
The pressure at the bottom of the liquid is the sum of atmospheric pressure and the pressure due to the height of the liquid. When the air inside the...
The correct answer is (d) 0125.
Explanation:
Let the radius of the first soap bubble = r,
Excess pressure inside P = 4S/r
Let the radius of the second soap bubble = r'
Excess pressure...
(d) will depend on direction of projection.
EXPLANATION:
Its minimum escape speed will be vₑ when projected vertically upward, but if projected otherwise the speed will be greater. So the escape speed...
Sunita wanted to say that the land on earth is divided in the different countries just on paper. It is actually in our mind. There is no such differentiation in...