A child is drinking a liquid with a straw. Which of the following statements is true?
A. Longer straws work better because the pressure is larger deeper down
B. The fluid is being pulled up into the straw
C. The pressure inside the straw depends on the viscosity of the liquid
D. The pressure in the straw is reduced and the liquid is pushed upward by atmospheric pressure on the surface of the liquid
Answer: D
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At sunset, the ____ Moon phase will be highest above the southern horizon for an observer in the Northern Hemisphere
a. new b. waxing crescent c. first quarter d. full e. third quarter
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A) They were produced in the Big Bang. B) They evolved from hydrogen and helium shortly after the Big Bang. C) They were produced by stars. D) They were produced inside interstellar gas clouds. E) all of the above
A capacitor C is connected in series with a resistor R across a battery and an open switch. If a second capacitor of capacitance 2C is connected in series with the first one, the time constant of the new RC circuit will be
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