Physics questions
20027 published questions with worked solutions.
- A satellite is orbiting the earth in a circular orbit of radius r. The following statements are correct:
- The escape velocity of a body projected vertically upwards from the surface of the earth is v. If the body is projected in a...
- The angular velocity of rotation of a star (of mass M and radius R) at which the matter starts to escape from its equator is
- The escape velocity of a body contribute upon:
- The relay satellite transmits the TV programme continuously from one par of the world to another because its:
- A satellite is orbiting close to the surface of the earth, then its speed is:
- The escape velocity from a spherical planet is v_e. What is escape velocity corresponding to another planet of twice the radius...
- A satellite in a circular of the earth has a K.E.(E_k). What is the minimum amount of energy to be added so that it escapes from...
- The weight of body at the center of the earth is
- If a body is taken from a deep mine to a point at certain height above the ground, its weight
- A man inside an artificial satellite feels weightlessness because the force of attraction due to earth on him is
- If the speed of rotation of earth about its axis is increased
- Weightlessness experienced by space ship while orbiting the earth is the result of
- If a body is taken to a place where there is no gravity, then
- What are the reasons due to which the astronauts do not feel weight inside the satellite: (i) There is no reaction of the floor...
- One can jump higher on the surface of moon because:
- Acceleration due to gravity (g) multiplied with diameter of earth is equivalent to:
- Mass of an ant is found to be 1/10^2 times smaller than that of elephant the escape velocity for elephant is
- Consider the earth to be homogeneous sphere scientist A goes deep down in a mine and scientist B goes high up in a balloon. The...
- The weight of body on the moon's surface is less than that on earth surface because :