geostationary satellite seems to be fixed in the sky because it does not orbit the earth. a) True b) False
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geostationary satellite seems to be fixed in the sky because it does not orbit the earth.
a) True
b) False
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- The moon on Mars Phobos ( Fear) and Deimos ( Terror) are very close to the planet compared to Earth's Moon. Their orbital radii are 9,376 km and 23,463.2 km respectively. A) what is the orbital speed of Phobos to that of Deimos? B) If the period of Phobos orbits 7hr 39.2 min, what is the mass of Mars? C) Calculate the orbital period of Deimos.10) Taking the age of Earth to be about 4 ✕ 109 years and assuming its orbital radius of 1.5 ✕ 1011 m has not changed and is circular, calculate the approximate total distance Earth has traveled since its birth (in a frame of reference stationary with respect to the Sun). _____ mWhich of the following statements about gravitational force, Fg , is not correct? a. Gravitational force is an attractive force only; it is never repulsive. b. Gravitational forces always exist in pairs of equal magnitude. c. The gravitational force between two objects depends on their separation. d. Gravitational force is the strongest of the fundamental forces.
- 6. Use Kepler's laws to calculate the mass of the Sun based on data for average Earth's orbit and compare the value obtained with the Sun's commonly listed value of 1.989 × 1030 kg.3. A moon's orbital angular velocity and orbital velocity about a planet are 6.28x10-8 rad/sec and 12.56 m/s respectively. Calculate this moon's distance from the planet and the planet's mass.