Heisenberg's uncertainty principle applies to
A) momentum and position.
B) energy and time.
C) both of these
D) neither of these
Answer: C
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The planet Neptune is blue in color. How would you expect the spectrum of visible light from Neptune to be different from the visible-light spectrum of the Sun?
A) The two spectra would have similar shapes, except Neptune's spectrum would be missing a big chunk of the red light that is present in the Sun's spectrum. B) The two spectra would have similar shapes, except Neptune's spectrum would be missing a big chunk of the blue light that is present in the Sun's spectrum. C) Neptune's spectrum would peak at a much longer wavelength than the Sun's spectrum. D) There is no way to predict the answer to this question because planets and stars are made of such different things.
The angular resolution of the eye is about 5 × 10-4 rad. The Moon is about 400,000 km from the earth and has a diameter of about 3500 km. What is the smallest feature on the Moon that can be resolved with the unaided eye?
A) 400 km B) 1000 km C) 100 km D) 1.8 km E) 200 km
A uniform electric field, with a magnitude of 600 N/C, is directed parallel to the positive x axis. If the potential at x = 4.0 m is 1000 V, what is the change in potential energy of a proton as it moves from x = 4.0 m to x = 1.0 m? (qp = 1.6 × 10^-19 C)
a. 500 J c. 1.9 × 10^-16 J b. 2.9 × 10^-16 J d. 8.0 × 10^-17 J
Radio waves have ________ wavelength and ________ frequency relative to visible light.
A. shorter; larger B. longer; smaller C. longer; larger D. shorter; smaller