Captain Ahab notices that the waves passing the anchored Pequod are 10 feet from crest to crest, and that each minute 4 crests pass. The wave speed is

A. 20 feet per minute.
B. 80 feet per minute.
C. 40 feet per minute.
D. 5 feet per minute.


Answer: C

Physics & Space Science

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In a thermoplastic elastomer there are areas of _________bonding that allow for large strains, and areas of strong bonding that anchor the LCMs together.

Fill in the blank(s) with the appropriate word(s).

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Length Contraction: Astronaut Hans leaves Earth in a spaceship traveling at a speed of 0.280c relative to the observer Brian at rest on Earth. Hans is holding a pencil at an angle of 30° with the direction of travel, as seen by Hans. What angle does the pencil make with the direction of travel, as seen by Brian on Earth?

A. 29° B. 30° C. 31° D. 33° E. 90°

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Which of the following statements about Hawking radiation is not true, at least according to our current understanding?

A) It was first predicted by Stephen Hawking in the 1970s. B) It causes black holes to slowly shrink in mass. C) It has never yet been observed. D) It represents a strange form of radiation that emerges from within the event horizon of a black hole. E) It occurs when real particles are created from the gravitational potential energy of a black hole.

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Argon rather than air is the gas used in incandescent bulbs because

A) it produces a pleasing bluish glow. B) oxygen in air oxidizes the lamp filament. C) argon is relatively plentiful. D) none of the above

Physics & Space Science