Question 7 A planet has a radius which is double that of the Earth's radius and a mass which is twice that of the Earth. What is the approximate gravitational field strength on the surface of the planet? A B C OD 5 N kg-¹ 1 1 2.5 N kg-¹ 10 N kg-¹ 20 N kg-¹ 1

The gravitational force between two objects with masses 5kg and 23kg separated by a x10-11 N. distance 6m is а. 21.31 O b. 27613.80 O c. 4602.30 o d. 127.84

a and b

C) ESA wants to send a satellite to Jupiter to investigate its internal structure and origin by measuring the atmospheric composition and temperature. The spacecraft will leave Earth from a parking orbit of radius 6578 km and arrive at Jupiter in a parking orbit of radius 75782 km. What is the total velocity change required to do this mission? How long would it take for the satellite to arrive at Jupiter?

what are the magnitude and direction of the gravitational force exerted on Moe by 11.lf Moe exerts a gravitational force of 3.65 x 10-8 N on Larry, who is standing east of him, 10.If an object on the earth experiences a gravitational force of 25 N toward the center of the earth, what are the magnitude and direction of the force the object exerts on the earth? Larry? If each man has a mass of 70.0 kg, how far apart are they standing? If Curly were to bump into Moe, knocking him halfway to Larry, how would the new gravitational force between Moe and Larry compare to the original? a. ¼ as great b. ½ as great c. the same d. twice as great e. four times as great

Planet Kling has half the radius and 2 times the mass of the Earth. What is the best estimate for the magnitude of the gravitational field at the surface of Planet Kling?

A uniform distribution of dust in the solar system adds to the gravitational attraction of the Sun on a planet an additional forceF = −m C rwhere m is the mass of the planet, C is a constant proportional to the gravitational constant and the density of the dust, and r is the radius vector from the Sun to the planet (both considered as points). This additional force is very small compared to the direct Sun-planet gravitational force.Calculate the period for a circular orbit of radius r0 of the planet in thiscombined field.

4. There are several moons orbiting Jupiter. One of the moons, Ganymede, has a mass of kg. The radius of its orbit around Jupiter is 1,070,000 km. (The mass of Jupiter is 1.90 x a) Draw a force diagram for Ganymede as it orbits Jupiter. b) What is the velocity of Ganymede as it orbits Jupiter? c) What is the period of Ganymede's orbit around Jupiter? ans. b) 10883 m/s

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3 3 3 23 24 There are three planets in a distant solar system. Planet P, Planet Q, and Planet R have equal volumes and radii. They differ by their masses. Planet P is the most massive. Planet R is the least massive. The picture shows the planets for comparison. Planet P 1000 Tg Which planet has the strongest gravity field at its surface? A. Planet P C. Planet R B. Planet Q D. All have equal surface gravity. Which forms of matter have gravity? A. Solids C. Gases & Liquids B. Solids & Liquids D. Gases, Liquids, & Solids Planet Q 500 Tg Planet R 100 Tg