Two 4.0-? resistors are connected in parallel, and this combination is connected in series with 3.0 ?. What is the equivalent resistance of this system?

A) 1.2 ?
B) 5.0 ?
C) 7.0 ?
D) 11 ?


B

Physics & Space Science

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If 2.0 kg of water at 0°C is to be vaporized, how much heat must be added?

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A viscous fluid is flowing through a small tube at a rate of 0.200 If the pressure difference between one end of the tube and the other is doubled, the length is halved and the radius is also doubled, then what is the rate of flow of the fluid?

A. 9.2
B. 10.2
C. 12.8
D. 13.4
E. 14.6

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Which of the following is not a characteristic of the seasons on Mars?

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Tycho failed to detect ______ for the nova of 1572 indicating it was ______

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