A ray of light is incident on the mid-point of a glass prism surface at an angle of 25.0° with the normal. For the glass, n = 1.55, and the prism apex angle is 40.0°. What is the angle of refraction as the ray enters the air on the far side of the prism? The surfaces involved are those of the apex angle
a. 39.4°
c. 22.3°
b. 46.0°
d. 14.1°
A
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Supernova remnants differ from star forming regions because, although there is ionized hydrogen in both, supernova remnants:
A) don't look like star forming regions. B) are much bigger than star forming regions. C) are located far from star forming regions. D) are more diffuse than star forming regions. E) contain no ionizing stars.
Exhibit 17-2
The figure below shows a sine wave on a string at one instant of time.
?
?
Use this exhibit to answer the following question(s).
Refer to . Which of the graphs below shows a wave where the wavelength is twice as large?
a.
The complete magnetic cycle is 11 years long, whereas the sunspot cycle is 22 years long
Indicate whether the statement is true or false
Hubble's tuning fork diagram represents the evolution path of galaxies from elliptical to spiral.
Answer the following statement true (T) or false (F)