Physics, 06.05.2020 03:31 rashawng2005
The gravitational force of the Earth exerts no torque on a satellite orbiting the Earth in an elliptical orbit. Compare the motion of the satellite at the point in its orbit nearest the Earth (perigee) to its motion at the pint in it orbit farthest from the Earth (apogee). At these two points closest to the earth:
A) the angular speed will be greatest although the linear speed will be the same. B) the kinetic energy and angular momentum will both be greater. C) None of the above. D) Both choices A and B are valid.
Answers: 3
Physics, 21.06.2019 22:30
The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage
Answers: 2
Physics, 22.06.2019 13:40
Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?
Answers: 1
Physics, 22.06.2019 15:00
A10 kg box initially at rest is pulled 18 meters across a horizontal, frictionless surface by a 40 n force. what is the block’s final velocity over the 18 meters?
Answers: 2
The gravitational force of the Earth exerts no torque on a satellite orbiting the Earth in an ellipt...
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