Consider a very small hole in the bottom of a tank 20.0 cm in diameter filled with water to a height of 50.0 cm. Find the speed at which the water exits the tank through the hole
A) 3.13 m/s
B) 9.80 m/s
C) 31.8 m/s
D) 34.9 m/s
A
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In the Ptolemaic system, Venus should not show phases
Indicate whether the statement is true or false
In an isothermal process for an ideal gas system (where the internal energy doesn't change), which of the following choices best corresponds to the value of the work done by the system?
a. its heat intake c. the negative of its heat intake b. twice its heat intake d. twice the negative of its heat intake
Three resistors connected in series have individual voltages labeled DV1, DV2, and DV3, respectively. Which of the following expresses the value of the total voltage DVT taken over the three resistors together?
a. DVT = (1/DV1 + 1/DV2 + 1/DV3) c. DVT = (1/DV1 + 1/DV2 + 1/DV3)-1 b. DVT = DV1 = DV2 = DV3 d. DVT = DV1 + DV2 + DV3
Which of these would support the capture theory of the Moon's origin?
A) the Caloris Basin on Mercury B) the retrograde orbit and large orbital inclination of Neptune's moon Triton C) the rings of all the jovians lying around their equators D) the Pluto-Charon system E) the four large moons of Jupiter orbit its equator