The wavelengths that are most likely for communication with other civilizations are those in the water hole
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The current in two identical light bulbs connected in series is 0.25 A. The voltage across both bulbs is 110 V. The resistance of a single light bulb is
A) 22 ohms. B) 44 ohms. C) 220 ohms. D) 440 ohms. E) none of the above
Comets are not actually members of the solar system, but have been captured by the Sun
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If you triple the rms voltage in an ac circuit, what happens to the maximum voltage?
A) It increases by a factor of . B) It decreases by a factor of . C) It decreases by a factor of 3. D) It increases by a factor of 3. E) It increases by a factor of 9.
A proton is released such that it has an initial speed of 5.0 × 10^5 m/s from left to right across the page. A magnetic field of 1.2 T is present at an angle of 30° to the horizontal direction (or positive x axis). What is the magnitude of the force experienced by the proton? (qp = 1.6 × 10^-19 C)
a. 3.8 × 10^-14 N c. 4.8 × 10^-14 N b. 7.5 × 10^3 N d. 1.3 × 10^-19 N