Asatellite orbits a planet of unknown mass in a circle of radius
2.0×107
m. the magnitude of the gravitational force on the satellite from the planet is f = 80 n.
(a) what is the kinetic energy of the satellite in this orbit?
(b) what would f be if the orbit radius were increased to
3.0×107
m?
Answers: 1
Physics, 22.06.2019 10:30
Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.
Answers: 1
Physics, 22.06.2019 16:50
Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?
Answers: 2
Physics, 22.06.2019 23:30
How is the ideal mechanical advantage of a wheel and axle calculated?
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Asatellite orbits a planet of unknown mass in a circle of radius
2.0×107
m. the magnitud...
2.0×107
m. the magnitud...
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