On the Moon, no air is present. As such, which of the following waves cannot be detected
a. optical b. infrared
c. radio d. sound
d
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The block shown is pulled across the horizontal surface at a constant speed by the force shown. If M = 5.0 kg, F = 14 N and ? = 35°, what is the coefficient of kinetic friction between the block and the horizontal surface?
A. 0.44 B. 0.33 C. 0.38 D. 0.28 E. 0.17
The rule for the interaction of magnetic poles is similar to the rule for electric
A) circuits. B) polarization. C) charges.
A beam of light of wavelength 630 nm is incident on a slit that is 0.400 mm wide. If the distance between the slit and the screen is 1.80 m, what is the width on the screen of the central bright fringe?
A) 1.94 mm B) 2.94 mm C) 3.54 mm D) 5.67 mm E) 6.94 mm
Starting outside the region with the magnetic field, a single square coil of wire moves across the region with a uniform magnetic field
perpendicular to the page. The loop moves at constant velocity
. As seen from above, a counterclockwise emf is regarded as positive. Roger claims that the graph shown below represents the induced emf. Martin says he's wrong. In which direction did the loop move over the plane of the page, or is Martin correct?
a.
Roger is correct: the loop moved from bottom to top.
b.
Roger is correct: the loop moved from top to bottom.
c.
Roger is correct: the loop moved from left to right.
d.
Roger is correct: the loop moved from right to left.
e.
Martin is correct: none of these directions of motion will produce the graph of emf vs t.