A wave is traveling with a velocity of 300 m/s and strikes a surface at an angle of 30.0 degrees with the normal to the surface. The wave splits into a reflected part and a refracted part. The refracted wave travels with a velocity of 400 m/s. What is the angle of refraction?

A. 20.5 degrees
B. 25.9 degrees
C. 30.5 degrees
D. 41.8 degrees
E. 50.3 degrees


D. 41.8 degrees

Physics & Space Science

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Initially, the switch is open and has been open for a very long time. At time t = 0 s, the switch is suddenly closed. How long after closing the switch will the potential difference across the inductor be 24 V? A) 1.6 s B) 1.4 s C) 1.8 s D) 1.9 s E) 2.1 s

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We have direct evidence from ALMA that supports nebular theory

Indicate whether the statement is true or false

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An object of mass m is suspended by two coplanar wires, as shown below. The tension in each wire has a magnitude given by

A.

.

B.
.

C.
.

D.
mg.

E.
.

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Light is refracted through a diamond. If the angle of incidence is 30°, and the angle of refraction is 12°, what is the index of refraction?

a. 1.3 b. 2.4 c. 2.6 d. 1.8 e. 0.4

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