In a single-slit diffraction experiment, the width of the slit is 1.90 ?m. If a beam of light of wavelength 610 nm forms a diffraction pattern, what is the angle associated with the first minimum above the central bright fringe?
A) 9.35°
B) 11.4°
C) 12.2°
D) 39.9°
E) 18.7°
E
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The strong force is an attractive force between
A. Two protons. B. Two neutrons. C. A proton and a neutron. D. Both A and B. E. All of A-C.
A toy rocket that weighs 10 N blasts straight up from ground level with an initial kinetic energy of 40 J. At the exact top of its trajectory, its total mechanical energy is 140 J
To what vertical height above the ground does it rise, assuming no air resistance? A) 10 m B) 24 m C) 1.0 m D) 14 m
A Young's double-slit experiment is performed, and the distance between bright fringes is d0 . If the experiment is repeated, this time under water, what is the relationship between the new distance between bright fringes, dw, and the original distance, d0?
a. dw < d0 b. dw = d0 c. dw > d0 d. Not enough information
The internal resistances of an ideal voltmeter and an ideal ammeter are, respectively (ideal meaning the behavior of the system is not changed when using the meter):
a. zero and infinite. c. zero and zero. b. infinite and zero. d. infinite and infinite.