Physics, 31.07.2019 16:30 beachgreentag
When a star moves away from earth, its electromagnetic spectrum stretches to make its wavelengths appear longer. which of these methods makes use of this phenomenon to measure accurately the distance from earth to a star? a. doppler effect b. parallax method c. hr diagram d. blue shift
Answers: 1
Physics, 21.06.2019 16:30
Which of the following is not a part of a wave? question 2 options: a: frequency b: refraction c: wavelength d: amplitude (whoever answers correctly first gets brainiest! ) ~kayla
Answers: 2
Physics, 21.06.2019 21:30
The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?
Answers: 1
Physics, 22.06.2019 11:10
While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.
Answers: 3
Physics, 22.06.2019 12:00
You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?
Answers: 2
When a star moves away from earth, its electromagnetic spectrum stretches to make its wavelengths ap...
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