Suppose the star Sirius were moved to a distance 7 times closer to Earth than it is now. How would its apparent brightness change?
A) It would be 7 times as bright.
B) It would be 1/7 as bright.
C) It would be 1/49 as bright.
D) It would be 49 times as bright.
D) It would be 49 times as bright.
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Latent Heats: A 45.0-kg sample of ice is at 0.00°C. How much heat is needed to melt it? For water LF = 334,000 J/kg and LV = 2.256 × 106 J/kg.
A. 1.50 × 104 kJ B. 4.10 × 106 kJ C. 0.00 kJ D. 1.02 × 105 kJ
Capacitors in Combination: A network of capacitors is mostly inside a sealed box, but one capacitor CX is sticking out, as shown in the figure. When you connect a multimeter across points a and b, it reads 27.0 µF. What is CX?
A. 27.0 µF B. 23.0 µF C. 4.0 µF D. 2.4 µF E. 2.2 µF
The best description of the multidimensional integrative approach to understanding psychopathology is that it's based on
What will be an ideal response?
Imagine two boats. One travels 5.0 m/s eastward relative to the earth and the other 3.4 m/s eastward relative to the earth. We set up a reference frame on each boat with the x axis pointing eastward, and choose the first boat (arbitrarily) to be the Home Frame. The second boat is thus the Other Frame. What is the sign of ?, according to the convention established in this chapter?
A. Positive B. Negative C. We are free to choose either sign.