A light beam having a wavelength of 470 nm in air is directed into glycerine at an angle of 75.0° with the normal in air. Glycerine has a refractive index of 1.47. (c = 3.0 × 108 m/s)
(a) What are the frequency and wavelength of the light in the glycerine?
(b) What angle does the light beam make with the normal in the glycerine?
(a) 6.38 × 1014 Hz, 320 nm (b) 41.1°
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The Milky Way:
A) contains less than 50 billion stars. B) stretches across for just around 30,000 light-years. C) is known for being very unique. D) is larger than most other galaxies.
The ________ epoch happened when the superforce separated into the electromagnetic, strong, and weak forces, with a tremendous release of pressure
Fill in the blank(s) with correct word
In video 2 for Chapter 17, they show a block of glass with 2 reflections of light. Why are there two?
A. The light refracts as it goes through the block, and this makes a second reflection. B. Diffraction at the surface produces multiple images. C. There is a reflection from the front of the block and from the back of the block D. There is an additional reflection inside the camera lens.
Which of the following is true of Jupiter's moon Europa?
A) It is rich in organic molecules and water. B) It appears to have a liquid-water ocean below its icy crust. C) It has methane in its atmosphere. D) It was brimming with life in its history.