Physics, 07.01.2021 19:50 ashiteru123
Which is one of Edwin Hubble’s findings that supports the big bang theory?
The universe started at a central point.
Planetesimals formed in debris disks.
Visible matter only makes up about 5% of the universe.
The Milky Way is the only galaxy in the universe.
Answers: 3
Physics, 22.06.2019 00:50, gungamer720
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?
Answers: 1
Physics, 22.06.2019 16:50, fsugg9168
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
Which is one of Edwin Hubble’s findings that supports the big bang theory?
The universe started at...
Mathematics, 01.07.2020 15:01
Mathematics, 01.07.2020 15:01