A diver shines light up to the surface of a flat glass-bottomed boat at an angle of 30° relative to the normal. If the index of refraction of water and glass are 1.33 and 1.5, respectively, at what angle (in degrees) does the light leave the glass (relative to its normal)?

a. 26
b. 35
c. 42
d. 22
e. 48


c

Physics & Space Science

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The fact that many radio lobes emit more intensely from the side away from the galaxy suggests that

a. they are formed by material falling into the galaxy. b. they are powered by magnetic fields. c. they are excited by radiation from nearby galaxies. d. they are powered by the rapid rotation of the galaxy. e. they are created by jets from the galaxy emitting where the material is halted.

Physics & Space Science

Even if a probe were in a stable orbit near a black hole, we would still observe its signals redshifted by the gravitational field of the black hole

Indicate whether the statement is true or false

Physics & Space Science

The shorter the wavelength of light, the higher its frequency

Indicate whether the statement is true or false

Physics & Space Science

If a = 1.0 cm, b = 3.0 cm, and I = 30 A, what is the magnitude of the magnetic field at point P?



a.
0.62 mT

b.
0.59 mT

c.
0.35 mT

d.
0.31 mT

e.
0.10 mT

Physics & Space Science