Physics, 04.08.2019 04:10 ChasityN8491
Galaxy a is located 200 million light-years from earth, while galaxy b is located 600 million light-years from earth. according to the hubble law, how does the motion of the two galaxies compare?
a. galaxies a and b are moving away from earth at the same rate.
b. galaxy a is moving away from earth three times as fast as galaxy b.
c. galaxy b is moving away from earth three times as fast as galaxy a.
Answers: 3
Physics, 22.06.2019 15:00, weridness80
For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat
Answers: 1
Physics, 23.06.2019 00:10, alisonnn101
During cooling, the kinetic energy of the molecules falls. why does this happen? a. the motion of the molecules increases. b. the motion of the molecules slows down. c. the van der waals forces between molecules decrease d. the forces of attraction between the molecules are overcome.
Answers: 2
Physics, 23.06.2019 03:10, stotherow5
You have been hired to design a spring-launched roller coaster thatwill carry two passengers per car. the car goes up a 10-m highhill, then descends 15m to the track's lowest point. you'vedetermined that the spring can be compressed a maximum o 2.0m andthat a loaded car will have a maximum mass of 400kg. for safetyreasons, the spring constant should be 10% larger than the minimumneeded for the car to just make it over the top. a) what spring constant (k) should you specify ? b) what is the maximum speed of a 350 kg car if the spring iscompressed the full amount.
Answers: 2
Galaxy a is located 200 million light-years from earth, while galaxy b is located 600 million light-...
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