The angle of incidence can vary between zero and
A) 1 radian.
B) ?/2 radians.
C) ? radians.
D) 2? radians.
E) 3?/2 radians.
B
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Kinetic Energy: What is the total energy of an electron moving with a speed of 0.950c? (c = 3.0 × 108 m/s, mel = 9.11 × 10-31 kg)
A. 2.6 × 10-13 J B. 8.2 × 10-14 J C. 1.1 × 10-13 J D. 1.2 × 10-14 J
Which of the following statements comparing open and globular star clusters is true?
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Why is it easier to find an iron meteorite on the ground that it is to witness one fall?
What will be an ideal response?
Electric Field of Point-Charges: A +5.00-?C point charge is placed at the 0.0 cm mark of a meter stick and a -4.00-?C point charge is placed at the 50.0 cm mark. At what point on a line through the ends of the meter stick is the electric field equal to zero?
A. 1.4 m from the 0 cm mark B. 2.5 m from the 0 cm mark C. 2.9 m from the 0 cm mark D. 3.3 m from the 0 cm mark E. 4.7 m from the 0 cm mark