Physics, 28.11.2019 05:31 autumnskye1
An astronaut is on a spacewalk outside her ship in gravity-free space. initially, the spacecraft and astronaut are at rest with respect to each other. then, the astronaut pushes to the left on the spacecraft and the astronaut accelerates to the right. which one of the following statements concerning this situation is true? the velocity of the astronaut increases while she is pushing on the spacecraft
Answers: 3
Physics, 22.06.2019 16:40
The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .
Answers: 3
Physics, 22.06.2019 17:50
Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?
Answers: 1
Physics, 22.06.2019 20:00
Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?
Answers: 1
An astronaut is on a spacewalk outside her ship in gravity-free space. initially, the spacecraft and...