Physics questions
20027 published questions with worked solutions.
- The rotational period of a satellite close to the surface of the earth is 83 minutes. The time period of another earth satellite...
- If the mean distance of Mars from the Sun is 1.525 times that of the earth from the sun, in how many years will Mars complete one...
- Two satellites S_1 and S_2 revolve round a planet in coplanar circular orbits in the same sense. Their periods of revolution are...
- If the earth is at one fourth of its present distance from the sun, the duration of the year will be
- The period of revolution of planet A around the Sun is 8 times that of B. The distance of A from the Sun is n times greater than...
- A satellite of mass m moving around the earth of mass m_E in a circular orbit of radius R has angular momentum L. The rate of the...
- The increase in gravitational potential energy of an object of mass m raised from the surface of Earth to a height equal to the...
- A satellite of mass m moves around the Earth in a circular orbit with speed v. The potential energy of the satellite is
- v_e and v_p denote the escape velocities from the earth and another planet having twice the radius and the same mean density as...
- A satellite orbiting close to earth surface will escape, if
- The maximum vertical distance through which a full dressed astronaut can jump on the earth is 0.5 m. Estimate the maximum...
- The orbital velocity of a body at height h above the surface of Earth is 36% of that near the surface of the Earth of radius R....
- Escape velocity of a satellite of the earth at an altitude equal to radius of the earth is v. What will be the escape velocity at...
- If g is the acceleration due to gravity and R is radius of earth, the minimum kinetic energy required to make a satellite to move...
- If the earth suddenly contracts so that its radius reduces by 4% with mass remaining same, then what will happen to the escape...
- If two identical satellites are at R and 7R away from earth surface, the wrong statement is (R = Radius of earth)
- Planet A has a mass and radius twice that of planet B. The escape velocity from planet A is
- The moon revolves around the earth in a circular orbit of radius 3.84 10^ 5 km with velocity 1 km/s. The additional velocity...
- The value of 'g' at a certain height h above the free surface of Earth is x 4 where x is the value of 'g' at the surface of...
- The mass of the moon is 1 81 of the earth but the gravitational pull is 1 6 of the earth. It is due to the fact that