30. (II) A hypothetical planet has a radius 2.0 times that of Earth, but has the...
A hypothetical planet has a mass 3 times that of the Earth and a radius twice that of the Earth. Calculate the value for acceleration due to gravity near the surface of this hypothetical planet.
A hypothetical planet has a radius 1.2 times that of Earth, but has the same mass. 1.)What is the acceleration due to gravity near its surface? Express your answer to two significant figures and include the appropriate units.
A hypothetical planet has 3 times the mass of Earth and twice the radius of the Earth. What is the surface gravity on this planet? r = Rplanet g = GMplanet / r2
012 10.0 points Planet X has a mass 4.86 times that of the Earth and a radius 2.83 times the radius of the Earth What is the ratio of the acceleration due to gravity on the surface of Planet X to the acceleration due to gravity on the surface of the Earth?
The radius of a planet is three times that of Earth and its mass is nine times that of Esrth. The acceleration due to gravity on this planet is
A newly discovered planet has twice the mass and three times the radius of the earth. What is the free-fall acceleration at its surface, in terms of the free-fall acceleration g at the surface of the earth? a. 1/9 g b. 2/3 g c. 3/4 g d. 4/3 g E. None of these
Planet X has 20 times the mass of the earth and 3 times the earth's radius. It orbits star Y at a distance of 8 AU, where 1 AU is the earth-sun distance. Star Y has twice the mass of our sun. (a) What is the orbital period of Planet X in years? (b) An astronaut has an earth weight of 120 lbs. What is her weight on the surface of planet X?
Suppose that Planet X has 5 times the radius of the Earth and and 16 times Earth's mass. What is the ratio of the escape velocity on Planet X divided by the escape velocity on Earth?
A small mass m attached to the end of a string revolves in a circle on a frictionless tabletop. The other end of the string passes through a hole in the table (Fig. 8-62). Initially, the mass revolves with a speed vi = 2.4 m/s in a circle of radius ri =0.80 m. The string is then pulled slowly through the hole so that the radius is reduced to r2 0.48 m. What is the speed, 2, of the m...
A planet has a gravitational acceleration on its surface of 0.5 times Earth's gravitational acceleration on its surface. The planet's radius is two times Earth's radius. What is the mass of the planet, in terms of Earth masses, ME? Hint: Write equations for the gravitational acceleration on the surface of the planet and on Earth's surface in terms of their respective masses and radii. Then write the relationships between Earth's and the planet's gravitational accelerations, and between the Earth's and...