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, 22.06.2019 11:00
Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?
Answers: 3
Physics, 22.06.2019 14:30
Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o
Answers: 1
Physics, 22.06.2019 16:00
The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?
Answers: 2
Physics, 22.06.2019 16:50
Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.
Answers: 2
Distant galaxy emits light that has a wavelength of 434.1 nm. On earth, the wavelength of this light...
Mathematics, 13.11.2020 01:40
Mathematics, 13.11.2020 01:40
Geography, 13.11.2020 01:40
Biology, 13.11.2020 01:40
Physics, 13.11.2020 01:40
Mathematics, 13.11.2020 01:40
Computers and Technology, 13.11.2020 01:40
Biology, 13.11.2020 01:40
English, 13.11.2020 01:40
Social Studies, 13.11.2020 01:40
Mathematics, 13.11.2020 01:40
History, 13.11.2020 01:40
Mathematics, 13.11.2020 01:50
Social Studies, 13.11.2020 01:50