What is the Brewster's angle for light traveling in vacuum and reflecting off a piece of glass of index of refraction 1.52?
A) 48.9°
B) 33.3°
C) 48.1°
D) 56.7°
E) 41.1°
D
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An airplane is flying at a speed of 2.00 × 102 m/s in level flight at an altitude of 8.00 × 102 m. A package is to be dropped from the airplane to land on a target on the ground. Ignore air resistance
(a) At what horizontal distance away from the target should the package be released so that it lands on the target? (b) In what direction relative to the horizontal will the package be traveling when it hits the ground?
An alternating current circuit has resistance R, inductance L and capacitance C in series with a voltage source. Which statement is correct?
a. The voltage across the capacitor leads the voltage across the inductor by 90°. b. The voltage across the inductor leads the voltage across the capacitor by 90°. c. The voltage across the inductor leads the voltage across the resistor by 180°. d. The voltage across the inductor is out of phase with the voltage across the capacitor by 180°. e. Both voltages lead the voltage across the resistor by 90°.
What is the wavelength associated with the electron in the n = 2 state of hydrogen?
A) 3.32 × 10-10 m B) 2.03 × 10-10 m C) 6.66 × 10-10 m D) 4.63 × 10-10 m E) 8.17 × 10-10 m
Boat 1 goes directly across a stream a distance L and back taking a time t1 . Boat 2 goes down stream a distance L and back taking a time t2 . If both boats had the same speed relative to the water, which of the following statements is true?
a. t2 > t1 b. t2 < t1 c. t2 = t1 d. t2 = 2t1 e. t2 = 0.5t1