Question 1 An Earth satellite has a speed 28,070 km/h when it is at its perigee of 220km above Earth's surface. Find the apogee distance, its speed at apogee, and its period of revolution. 4 Question ?
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- Copied! Problems us rce *24 Compute the orbital radius of an earth satellite that has an equatorial orbit and always remains above a fixed point P on the earth's surface. Communication satel- lites have such "geosynchronous" orbits (Fig. 6-19). These satellites are used to relay radio and television signals around the world. s if un- hate Communication satellite wwwwwwww as a dius mmm Fig. 6-19 25 The earth orbits the sun in an approximately circular orbit of radius 1.496 X 10" m (about 93 million 15I Review I Constants A uniform, solid, 1900.0 kg sphere has a radius of 5.00 m. Part A For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Journey to the center of the earth. Find the gravitational force this sphere exerts on a 1.70 kg point mass placed at the following distances from the center of the sphere 5.03 m. Express your answer in newtons. ΑΣφ ? F = N Submit Request Answer Part B Find the gravitational force this sphere exerts on a 1.70 kg point mass placed at the following distances from the center of the sphere 2.30 m. Express your answer in newtons. ? F = N1) How does the acceleration due to gravity at the surface of a planet change if the planet's radius is doubled ?
- 14.) A hypothetical planet has a radius 2.1 times that of Earth, but has the same mass. What is the acceleration due to gravity near its surface? Express your answer to two significant figures and include the appropriate units. gplanet= ____________ ______________ 15.) A 1400-NN crate rests on the floor. a.) How much work is required to move it at constant speed 5.0 mm along the floor against a friction force of 330 NN . Express your answer to two significant figures and include the appropriate units. Wp= ____________ _____________ b.) How much work is required to move it at constant speed 5.0 mm vertically. Express your answer to two significant figures and include the appropriate units. Wp= _____________ ______________8-24. An Earth satellite has a perigee of 300 km and an apogee of 3,500 km above Earth's surface. How far is the satellite above Earth when (a) it has rotated 90° around Earth from perigee and (b) it has moved halfway from perigee to apogee?How much energy is required to move a 900 kg object from the Earth's surface to an altitude twice the Earth's radius? Need Help? Read It