A Young's double-slit apparatus is set up. The source wavelength is 424 nm, and the double-slit spacing is 0.0560 mm. At what distance from the double slits should the screen be placed if the spacing between alternating bright fringes is to be 1.60 cm? (1 nm = 10?9 m)
a. 211 m
b. 2.11 m
c. 0.825 m
d. 279 m
e. 2.11 m
b
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Uniform Circular Motion: A jet plane flying 600 m/s experiences an acceleration of 4.0 g when pulling out of the circular section of a dive. What is the radius of curvature of this section of the dive?
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Three different bodies-a uniform sphere, a uniform disk, and a hoop-all have same radius and same mass. The body with the largest rotational inertia will be
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You stand on a scale to measure your weight. The reaction to the force the Earth exerts on you is
A. the force the Earth exerts on the scale. B. the force you exert on the Earth. C. the force the scale exerts on you. D. the force you exert on the scale. E. the force the scale exerts on the Earth.
When a rocket ship gaining speed in remote, gravity-free outer space runs out of fuel, it
A) gains speed for a short time, then slows down to a constant velocity. B) gains speed for a short time, slows down, and eventually stops. C) no longer gains speed. D) comes to a quick stop.