The angle of reflection is the angle between
A) the reflected ray and the incident ray.
B) the reflected ray and the surface of the mirror.
C) the incidence ray and the surface of the mirror.
D) the reflected ray and the normal drawn at the point where this ray meets the mirror.
E) the incident ray and the normal drawn at the point where this ray meets the mirror.
D
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__________ in Earth's atmosphere absorbs most ultraviolet radiation coming from the Sun
a. Methane b. Three bound oxygen atoms c. Water vapor d. Carbon dioxide
Uncertainty Principle Using Momentum and Position: You measure the velocity of an electron to an accuracy of ±22.6 m/s. What is the minimum uncertainty in its position? (h = 6.626 × 10-34 J ? s, melectron = 9.11 × 10-31 kg)
A. 8.05 ?m B. 4.03 ?m C. 16.1 ?m D. 32.2 ?m E. 5.12 µm
Charge of uniform density (20 nC/m2) is distributed over a cylindrical surface (radius = 1.0 cm), and a second coaxial surface (radius = 3.0 cm) carries a uniform charge density of ?12 nC/m2. Determine the magnitude of the electric field at a point 2.0 cm from the symmetry axis of the two surfaces.
A. 2.3 kN/C B. 1.1 kN/C C. 1.7 kN/C D. 3.4 kN/C E. 4.5 kN/C
Suppose you were near a site with mercury pollution and were told that a plant could take mercury up, but that it would emit mercury vapor. Would it be worth planting these plants? Why or why not? (This is an expected phenomenon.)
What will be an ideal response?