Physics, 07.05.2020 05:08, brandonm39
Distant galaxy emits light that has a wavelength of 434.1 nm. On earth, the wavelength of this light is measured to be 438.6 nm. (a) Decide whether this galaxy is approaching or receding from the earth. Give your reasoning. (b) Find the speed of the galaxy relative to the earth.
Answers: 3
Physics, 21.06.2019 17:20, buiratsamah
You have been called to testify as an expert witness in a trial involving a head-on collision. car a weighs 1515 lb and was traveling eastward. car b weighs 1125 lb and was traveling westward at 44.0 mph. the cars locked bumpers and slid eastward with their wheels locked for 22.5 ft before stopping. you have measured the coefficient of kinetic friction between the tires and the pavement to be 0.750 . how fast (in miles per hour) was car a traveling just before the collision? (this problem uses english units because they would be used in a u. s. legal proceeding.)
Answers: 3
Physics, 22.06.2019 00:00, angelequej1167
Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.
Answers: 2
Physics, 22.06.2019 06:10, crystalryan3797
Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.
Answers: 3
Distant galaxy emits light that has a wavelength of 434.1 nm. On earth, the wavelength of this light...
History, 18.12.2021 05:10
Computers and Technology, 18.12.2021 05:10
Geography, 18.12.2021 05:10
Business, 18.12.2021 05:10
Business, 18.12.2021 05:10