A ray of light, which is traveling in air, is incident on a glass plate at a 45° angle. The angle of refraction in the glass
A) is greater than 45°.
B) is less than 45°.
C) is equal to 45°.
D) is unknown because it all depends on the index of refraction of glass.
B
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Force on a Wire: When the switch is closed in the circuit shown in the figure, the wire between the poles of the horseshoe magnet deflects upward. From this you can conclude that the left end of the magnet is
A. a north magnetic pole. B. a south magnetic pole. C. There is not enough information given to answer the question.
Specifically, Home Frame observers will see that for events farther and farther up the common +x axis, the times registered by Other Frame clocks at the events
A. Become further and further ahead. B. Become further and further behind. C. Remain the same. D. Have no clear relationship to the values that Home Frame clocks register for the same events.
The white zones of Jupiter and Saturn are made of ________ ice, apparently dissolved in the deep oceans of Uranus and Neptune
Fill in the blank(s) with correct word
A certain spherical asteroid has a mass of 3.5 × 1016 kg and a radius of 8.8 km. What is the minimum speed needed to escape from the surface of this asteroid? (G = 6.67 × 10-11 N ? m2/kg2)
A) 23 m/s B) 16 m/s C) 520 m/s D) 730 m/s