As an object moves faster through the air, its terminal speed increases
Indicate whether the statement is true or false
F
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RLC Circuits: As shown in the figure, an ac source whose rms voltage is 80 V is in series with a 100-? resistor and a capacitor whose reactance is 200 ? at the frequency of the source. What is the rms voltage across the capacitor?
A. 66 V B. 68 V C. 70 V D. 72 V E. 74 V
Wave Characteristics: A radio station broadcasts at a frequency of 80 MHz. How far from the transmitter will this signal travel in 67 ms? (c = 3.0 × 108 m/s)
A. 60 × 106 m B. 67 m C. 40 km D. 80 km E. 20 × 106 m
Interstellar dust clouds are best observed at what wavelength?
A) visible only B) radio and infrared C) UV and infrared D) radio and X-ray E) visible and UV
If a Cu2+ ion that is initially at rest accelerates through a potential difference of 12 V without friction, how much kinetic energy will it gain? (e = 1.60 × 10-19 C)
A) 3.0 eV. B) 6.0 eV. C) 12 eV. D) 24 eV.