Predict/Calculate A beam of light enters the sloping side of a 45°-90°-45° glass prism with an index of refraction n = 1.66 The situation is similar to that shown in Figure 26-68 except that the angle of incidence of the incoming beam can be varied, (a) Find the angle of incidence for which the reflection on the vertical side of the prism exactly satisfies the condition for total internal reflection. (b) If the angle of incidence is increased is the reflection at the vertical surface still total? Explain. (c) What is the minimum value of n such that a horizontal beam like that in Figure 26-68 undergoes total internal reflection at the vertical side of the prism?
Predict/Calculate A beam of light enters the sloping side of a 45°-90°-45° glass prism with an index of refraction n = 1.66 The situation is similar to that shown in Figure 26-68 except that the angle of incidence of the incoming beam can be varied, (a) Find the angle of incidence for which the reflection on the vertical side of the prism exactly satisfies the condition for total internal reflection. (b) If the angle of incidence is increased is the reflection at the vertical surface still total? Explain. (c) What is the minimum value of n such that a horizontal beam like that in Figure 26-68 undergoes total internal reflection at the vertical side of the prism?
Solution Summary: The author explains that the angle of incidence for which the reflection on the vertical side of the prism satisfies the condition for total internal reflection is 13°.
Predict/Calculate A beam of light enters the sloping side of a 45°-90°-45° glass prism with an index of refraction n = 1.66 The situation is similar to that shown in Figure 26-68 except that the angle of incidence of the incoming beam can be varied, (a) Find the angle of incidence for which the reflection on the vertical side of the prism exactly satisfies the condition for total internal reflection. (b) If the angle of incidence is increased is the reflection at the vertical surface still total? Explain. (c) What is the minimum value of n such that a horizontal beam like that in Figure 26-68 undergoes total internal reflection at the vertical side of the prism?
A 85 turn, 10.0 cm diameter coil rotates at an angular velocity of 8.00 rad/s in a 1.35 T field, starting with the normal of the plane of the coil perpendicular to the field. Assume that the positive max emf is reached first.
(a) What (in V) is the peak emf?
7.17
V
(b) At what time (in s) is the peak emf first reached?
0.196
S
(c) At what time (in s) is the emf first at its most negative?
0.589
x s
(d) What is the period (in s) of the AC voltage output?
0.785
S
A bobsled starts at the top of a track as human runners sprint from rest and then jump into the sled. Assume they reach 40 km/h from rest after covering a distance of 50 m over flat ice. a. How much work do they do on themselves and the sled which they are pushing given the fact that there are two men of combined mass 185 kg and the sled with a mass of 200 kg? (If you haven't seen bobsledding, watch youtube to understand better what's going on.) b. After this start, the team races down the track and descends vertically by 200 m. At the finish line the sled crosses with a speed of 55 m/s. How much energy was lost to drag and friction along the way down after the men were in the sled?
For what type of force is it not possible to define a potential energy expression?
Chapter 26 Solutions
Modified Mastering Physics with Pearson eText -- Access Card -- for Physics (18-Weeks)
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