Austin did a measurement for the speed of light in an experiment. He found that the speed of light is 4.0 x 1018 m/s in air. When Nancy Drew saw his result, she immediately informed him that he made a mistake. How did Nancy know? O Light cannot have a speed. O His result would be correct if the experiment was done under water. O His result would be correct, if the light medium was in vacuum, but not in air. O None of the choices is correct. O Speed of light cannot be greater than 3 x 108 m/s.

Austin did a measurement for the speed of light in an experiment. He found that the speed of light is 4.0 x 1018 m/s in air. When Nancy Drew saw his result, she immediately informed him that he made a mistake. How did Nancy know? O Light cannot have a speed. O His result would be correct if the experiment was done under water. O His result would be correct, if the light medium was in vacuum, but not in air. O None of the choices is correct. O Speed of light cannot be greater than 3 x 108 m/s.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 86P: Distances in space are often quoted in units of light years, the distance ugh travels in 1 year. (a)...

See similar textbooks

Similar questions

What is wrong with the following expressions? How can you correct them? (a) C=AB , (b) C=AB , (c) C=AB , (d) C=AB , (e) C+2A=B , (f) C=AB , (g) AB=AB , (h) C=2AB , (i) C=A/B , and (j) C=A/B .
Lei A = 60.0 cm at 270 measured from the horizontal. Let B = 80.0 cm at some angle . (a) Find the magnitude of A + B as a function of . (b) From the answer to part (a), for what value of does | A + B| take on its maximum value? What is this maximum value? (c) From the answer to pan (a), for what value of does | A + B| take on its minimum value? What is this minimum value? (d) Without reference to the answer to part (a), argue that the answers to each of parts (b) and (c) do or do not make sense.
(a) Find the value of for the following situation. An astronaut measures the length of his spaceship to be 100 m, while an observer measures it to be 25.0 m. (b) What is the of the spaceship relative to Earth?
Distances in space are often quoted in units of light years, the distance ugh travels in 1 year. (a) How many meters is a light-year? (b) How many meters is it to Andromeda, the nearest large galaxy, given that it is 2.54106 ly away’ (C) The most distant galaxy yet discovered is 13.4109 ly away. How far is this in meters?
(a) Does motion affect the rate of a clock as measured by an observer moving with it? (b) Does motion affect how an observer moving relative to a clock measures its rate?
Edward and Calil do some experiments to determine the speed of light in a special transparent material. They determine the speed of light to be 0.23c. Edward shines a light thru the material. Determine the critical angle in degrees for the light ray if there is a chamber of air above the material. Please give your answer as a whole number. (c is the speed of light in vacuum)
The speed of light changes when it goes from ethyl alcohol (n = 1.36) to carbon tetrachloride (n = 1.46). The ratio of the speed in carbon tetrachloride to the speed in ethyl alcohol, vz/vi, is а. 1.99 b. 1.07 с. 0.932 d. 0.511 e. 0.760
Ex. 16: The speed of light in air is 3 × 108 m/s and that in diamond is 1.4 × 108 m/s. Find R. I. of diamond.
Ex. 15: The velocity of light in diamond is 1.25 × 108 m/s. Find R. I. of diamond with respect to water. Given : (R. I. of water w. r. to air is 1.33)
10mW of light with X=628.3nm is sent though a 200µm sheet of substance with 1.6 + i(5 x 10-4). n How much light comes out the other side? (Answer in mW)
A ray of light is pointed at the surface of a block of fused quartz at an angle of 30.0° with respect to the normal (a line perpendicular to the surface at the spot where the ray hits the block). Part of the light is reflected and the rest refracted. What is the angle (in degrees) between the reflected and refracted rays? O
The apparatus used by Fizeau to measure the speed of light is shown below. Note the 8.63 km distance between the source and the reflecting mirror. Observer Lens Lens Light source Semitransparent mirror B Lens с Rotating toothed wheel Lens A Reflecting plane mirror (8.63 km from light source) You attempt to reproduce the experiment done by Fizeau by using a wheel with 720 equally spaced teeth. You find that if you rotate the wheel at 22 rotations per second, that the light becomes visible. The time it takes for consecutive teeth to pass by is equal to μs. Noting that the mirror is 8.63 km away, this gives a speed of light equal to 108 m/s. X