The reason the wavelike nature of a moving baseball is not noticed in everyday life is that
A) it doesn't have a wavelike nature.
B) its wavelength is too small.
C) its frequency is too small.
D) its energy is too small.
E) its speed is too small.
B
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Scientists have detected thousands of gamma ray bursts. The evidence suggests that most or all of these bursts
A) have occurred in the central regions of the Milky Way. B) have occurred in distant galaxies. C) come from the same types of close binary systems that produce X-ray bursts. D) come from the Oort cloud surrounding the Sun.
What is the wavelength of a photon having the same momentum as an electron that is traveling at 7.5 km/s?
(h = 6.626 × 10-34 J ? s, melectron = 9.11 × 10-31 kg)
A loop containing N identical resistors includes a battery with an emf of 10 V. If we start the loop at the battery's negative terminal, proceed through the battery and then through the resistors back to the negative terminal of the battery, the potential difference across each resistor and the number of resistors could be
1.3 resistors, –7 V 2.5 resistors, 2 V 3.9 resistors, 1 V 4.2 resistors, –5 V
Following a series of experiments in which you are flung against walls to test the resiliency of the human body, you are ejected from the ship and find yourself in a maelstrom
Whipped by winds gusting at 10,000 km/hr, rising and falling in convective currents, you are not having a good time. On the rare occasions when you can assess your surroundings, you notice a horizon that seems to go on "forever" (or, at least, much farther than the horizon on Earth), and no solid surface anywhere. You get a glimpse of several large moons. The Sun races through your sky, requiring only about 5 hours to rise nearly due east, cross the meridian at an altitude of about 55° in the north, and then set due west.