When the standing wave pattern in a pipe is NANA, the pipe has which of the following set of properties? (N stands for node, A for antinode.)
a. It is open at both ends.
b. It is closed at both ends.
c. It is open at one end and closed at the other end.
d. Any of the above could be true.
c
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Suppose that the light from the sun suddenly shut off all over the sun, precisely at noon, as measured by clocks placed near the sun. Viewed from Earth, how would this appear? (HINT: It is about 8 light-minutes to the sun.)
A) Nothing unusual would happen, as viewed from Earth. B) At noon, all sunlight would suddenly cease. C) At about 8 minutes past noon, all sunlight would suddenly cease. D) After about 8 minutes, the sun would turn into Daffy Duck. E) At about 8 minutes past noon a small black spot would appear in the center of the sun, and this black spot would rapidly spread out over the entire sun.
What is meant by the idea life on Earth had an "interstellar origin"?
What will be an ideal response?
You lift a book slowly from the floor to the table. You then lift an identical book rapidly from the floor to the table. Compared with the slow process, in the faster process your
A) work done is greater. B) energy output [i.e., amount of energy transformed into gravitational energy] is greater. C) Both of the above are correct. D) power output is greater. E) All of the above are correct.
When a laboratory sample of unknown mass is placed on a vertical spring-scale having a spring constant of 467 N/m, the system obeys the equation y = (4.4 cm) cos(33.3 s-1 t). What is the mass of this laboratory sample?
What will be an ideal response?