An astronaut finds himself on a spherical asteroid whose radius is 500 km and whose mass is 1.2 x 1022 kg. a) What is the escape speed from the surface? b) How far from the surface will a particle go if it leaves the asteroid’s surface with a radial speed of 1000 m/s? c) With what speed will an object hit the asteroid if it is dropped from 1000 km above the surface? d) What is the acceleration due to the asteroid’s gravitational field at the surface? Recall that g = GM/R2
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Physics, 21.06.2019 14:30, tjgamer12
Is the alien theory a scientific claim? why or why not? just took the test it was , : " the alien theory is not a scientific claim because it is not based on valid data, there is no evidence to support it, and it does not come from a reliable source."
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Physics, 22.06.2019 00:00, robertbyrd2017
What must be the same for any two resistors that are connected in series ? a. the potntial diffrence across each b. the rate at which charge moves through each c. the rate at which energy is used by each d. the resistance to the flow of charge of each
Answers: 1
Physics, 22.06.2019 02:00, honeybaby675610
Askydiver weighing 140 lb (including equipment) falls vertically downward from an altitude of 19,000 ft and opens the parachute after 18 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.55|v| when the parachute is closed and is of magnitude 14|v| when the parachute is open, where the velocity v is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. (a) find the speed of the skydiver when the parachute opens. (b) find the distance fallen before the parachute opens. (c) what is the limiting velocity vl after the parachute opens? (d) determine how long the sky diver is in the air after the parachute opens. (e) plot the graph of velocity versus time from the beginning of the fall until the skydiver reaches the ground.
Answers: 1
Physics, 22.06.2019 09:00, rhettperkins
One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form
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An astronaut finds himself on a spherical asteroid whose radius is 500 km and whose mass is 1.2 x 10...
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