Physics, 09.12.2019 17:31 PleaseHelpMe9428

Which of these events is an example of the doppler shift?
the amplitude of a wave on a string increases as the frequency decreases.
the amplitude of sound from a tuning fork decreases due to damping.
the frequency of light from a star increases as it moves toward us.
the intensity of an electromagnetic wave increases with the field strength.
the velocity of an electromagnetic wave changes as its medium changes.

Answers: 1

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 12:30, madlenserlipepu1o

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=

Answers: 2

continue

Physics, 22.06.2019 15:40, dreamdancekay

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9

Answers: 1

continue

Physics, 22.06.2019 16:40, dylan6981

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .

Answers: 3

continue

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

continue

You know the right answer?

Which of these events is an example of the doppler shift?
the amplitude of a wave on a strin...