Homework Answers
Ans is " the wave B must have longer wavelength" as it has lower frequency than A.
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QUESTION 41 We have two waves of light, A and B. Wave A has a higher...
Electromagnetic waves are traveling straight down towards the center of the earth. For these waves... A)...
Electromagnetic waves are traveling straight down towards the center of the earth. For these waves... A) if the electric field points east, the associated magnetic field points north B) green light has a higher frequency than yellow light C) visible light has a shorter wavelength than infrared light D) if the electric field points south, the associated magnetic field points west E) a low-frequency wave has a longer wavelength than a high- frequency wave
05. Light from a spaceship is observed, then the spaceship moves directly away from the observer...
05. Light from a spaceship is observed, then the spaceship moves directly away from the observer at high speed while still emitting the light. As a result, the light seen by the observer has: A. a higher frequency and a longer wavelength than before B. a lower frequency and a shorter wavelength than before C. a higher frequency and a shorter wavelength than before D. a lower frequency and a longer wavelength than before E. the same frequency and wavelength...
Questions [1] One difference between mechanical waves and EM waves is: only one needs a source,...
Questions [1] One difference between mechanical waves and EM waves is: only one needs a source, only one needs a medium to disturb. (2) If a color of visible light had a frequency of 621 THz, then the color is: red, orange, yellow, green, blue, violet. [3] Different types of EM waves are categorized by their: amplitude, energy, frequency, wave speed in a vacuum. [4] The prefix infra- means: lower than , higher than, about the same. [5] Any piece...
3) Please circle the correct answers, if there is no correct answer, then leave it blank(do...
3) Please circle the correct answers, if there is no correct answer, then leave it blank(do not circle 1. a) red light has a smaller wavelength and lower frequency than blue light. b) red light has a longer wavelength and higher frequency than blue light. 2. Since sound travels at about 340 m/s in air, we can see that a) electromagnetic waves travel at the same speed as sound. b) electromagnetic waves travel slower than sound if air is present....
Part A: An electromagnetic wave is propagating in the positive x direction. At a given moment...
Part A:
An electromagnetic wave is propagating in the positive
x direction. At a given moment in time, the magnetic field
at the origin points in the positive y direction. In what
direction does the electric field at the origin point at that same
moment?
Positive x
Negative x
Positive y
Negative y
Positive z
Negative z
Part B:
The figure shows the electromagnetic field as a function of
position for two electromagnetic waves traveling in a vacuum at a...
(d) Light incident on a semiconductor will be absorbed if: (The light has a longer wavelength...
(d) Light incident on a semiconductor will be absorbed if: (The light has a longer wavelength than the cut-off wavelength the light has a shorter wavelength than the cut-off wavelength the light has a higher frequency than the cut-off frequency The light has a lower frequency than the cut-off frequency [The light is of high intensity.
3) Please circle the correct answers, if there is no correct answer, then leave it blank(do...
3) Please circle the correct answers, if there is no correct answer, then leave it blank(do not circle 1. a) red light has a smaller wavelength and lower frequency than blue light. b) red light has a longer wavelength and higher frequency than blue light. 2. Since sound travels at about 340 m/s in air, we can see that a) electromagnetic waves travel at the same speed as sound. b) electromagnetic waves travel slower than sound if air is present....
(d) Light incident on a semiconductor will be absorbed if: The light has a longer wavelength...
(d) Light incident on a semiconductor will be absorbed if: The light has a longer wavelength than the cut-off wavelength The light has a shorter wavelength than the cut-off wavelength The light has a higher frequency than the cut-off frequency The light has a lower frequency than the cut-off frequency The light is of high intensity. (e) Compound semiconductors will always be: Easier to use that si (more expensive than Si Have a bandgap than can be varied Have a...
Part A - If you compare green light to radio waves which of the following is...
Part A - If you compare green light to radio waves which of the following is TRUE? O O green light is electromagnetic radiation and radio waves are not green light has a longer wavelength than a radio wave green light travels through free space at the same speed as radio waves green light has lower energy than radio rays O
3) Please circle the correct answers, if there is no correct answer, then leave it blank(do...
3) Please circle the correct answers, if there is no correct answer, then leave it blank(do not circle.) 1. a) the velocity of electromagnetic waves increases with the frequency of the wave. b) the velocity of visible light waves is the same, however other types of electromagnetic waves has different velocities depending on the frequency. 2. a) as the wavelength of the wave increases, the frequency increases, and the velocity decreases. b) as the wavelength of the wave increases, the...
05. Light from a spaceship is observed, then the spaceship moves directly away from the observer at high speed while still emitting the light. As a result, the light seen by the observer has: A. a higher frequency and a longer wavelength than before B. a lower frequency and a shorter wavelength than before C. a higher frequency and a shorter wavelength than before D. a lower frequency and a longer wavelength than before E. the same frequency and wavelength...
Questions [1] One difference between mechanical waves and EM waves is: only one needs a source, only one needs a medium to disturb. (2) If a color of visible light had a frequency of 621 THz, then the color is: red, orange, yellow, green, blue, violet. [3] Different types of EM waves are categorized by their: amplitude, energy, frequency, wave speed in a vacuum. [4] The prefix infra- means: lower than , higher than, about the same. [5] Any piece...
Part A:
An electromagnetic wave is propagating in the positive
x direction. At a given moment in time, the magnetic field
at the origin points in the positive y direction. In what
direction does the electric field at the origin point at that same
moment?
Positive x
Negative x
Positive y
Negative y
Positive z
Negative z
Part B:
The figure shows the electromagnetic field as a function of
position for two electromagnetic waves traveling in a vacuum at a...
(d) Light incident on a semiconductor will be absorbed if: (The light has a longer wavelength than the cut-off wavelength the light has a shorter wavelength than the cut-off wavelength the light has a higher frequency than the cut-off frequency The light has a lower frequency than the cut-off frequency [The light is of high intensity.
3) Please circle the correct answers, if there is no correct answer, then leave it blank(do not circle 1. a) red light has a smaller wavelength and lower frequency than blue light. b) red light has a longer wavelength and higher frequency than blue light. 2. Since sound travels at about 340 m/s in air, we can see that a) electromagnetic waves travel at the same speed as sound. b) electromagnetic waves travel slower than sound if air is present....
(d) Light incident on a semiconductor will be absorbed if: The light has a longer wavelength than the cut-off wavelength The light has a shorter wavelength than the cut-off wavelength The light has a higher frequency than the cut-off frequency The light has a lower frequency than the cut-off frequency The light is of high intensity. (e) Compound semiconductors will always be: Easier to use that si (more expensive than Si Have a bandgap than can be varied Have a...
Part A - If you compare green light to radio waves which of the following is TRUE? O O green light is electromagnetic radiation and radio waves are not green light has a longer wavelength than a radio wave green light travels through free space at the same speed as radio waves green light has lower energy than radio rays O
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