When a ray of light passes obliquely from one medium to another, which of the following changes?
A) direction of travel
B) speed, direction of travel, but not wavelength
C) wavelength
D) wavelength, speed, & direction of travel
E) speed
D
You might also like to view...
Three particles are placed in the xy plane. A 30-g particle is located at (3, 4) m, and a 40-g particle is located at (-2, -2) m. Where must a 20-g particle be placed so that the center of mass of the three-particle system is at the origin?
a. (-3, -1) m b. (+1, +3) m c. (+3, -1) m d. (-1, -3) m e. (-0.5, -2) m
An object of mass 20.0 kg is lifted vertically through 1.00 m by a 400 N force. How much work is done by the net force in lifting this object? Use g = 10.0 m/s2
A) 20.0 J B) 40.0 J C) 100 J D) 200 J E) 400 J
A wire contains a steady current of 2 A. The charge that passes a cross section in 2 s is:
A) 3.2 × 10-19 C B) 6.4 × 10-19 C C) 1 C D) 2 C E) 4 C
A window glass that is 0.5 cm thick has dimensions of 3 m by 1.5 m. The thermal conductivity of this glass is 0.8 W/m ? K
If the outside surface of the glass is at -10°C and the inside surface is at 20°C, how much heat flows through the window in every hour? A) 50 MJ B) 60 MJ C) 70 MJ D) 80 MJ