A tank contains benzene, which has index of refraction 1.50. A dime is on the bottom of the tank. When viewed at normal incidence the dime appears to be 61 cm below the surface of the benzene. What is the actual depth of the benzene?
What will be an ideal response?
92 cm
Physics & Space Science
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Reactance: A 6.0-?F capacitor is connected to an ac signal with a frequency of 60 Hz. If the maximum voltage applied to the capacitor is 8.0 V, what is its capacitive reactance?
A. 6.0 ? B. 440 ? C. 7.5 × 10-6 ? D. 740 ? E. 160 ?
Physics & Space Science
Two moons orbit a planet in nearly circular orbits. Moon A has orbital radius r, and moon B has orbital radius 4r. Moon A takes 20 days to complete one orbit. How long does it take moon B to complete an orbit?
A) 20 d B) 40 d C) 80 d D) 160 d E) 320 d
Physics & Space Science
One mole of 27 13Al has a mass of _______ g.
A. 13 B. 27 C. 14 D. 20 E. 40
Physics & Space Science
Which of the following is the phase of matter in the Sun?
A) solid B) gas C) plasma D) liquid E) a mixture of all of the above
Physics & Space Science