Select which statement is correct in describing the image formed by a thin lens of a real object placed in front of the lens
A) If the lens is convex, the image will never be virtual.
B) If the image is real, then it is also inverted.
C) If the image is real, then it is also upright.
D) If the image is real, then it is also enlarged.
B
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Rank the five terrestrial worlds in order of size from smallest to largest
A) Mercury, Venus, Earth, Moon, Mars B) Mercury, Moon, Venus, Earth, Mars C) Moon, Mercury, Venus, Earth, Mars D) Moon, Mercury, Mars, Venus, Earth E) Mercury, Moon, Mars, Earth, Venus
A 90.0 kg person is running up the stairs at 0.500 m/s. The power needed to run up the stairs is
A. 441 Watts. B. 395 Watts. C. 302 Watts. D. 275 Watts. E. 257 Watts.
A common approximation is when the intensity of a sound is doubled, the decibel level increases by 3 . The sound level in a particular location is 100 dB. By what approximate factor is the sound intensity increased if the new decibel level of this sound is 106?
a. 2 b. 3 c. 4 d. 6
In a RLC circuit, a second capacitor is connected in parallel with the capacitor previously in the circuit. What is the effect of this change on the impedance of the circuit?
A) It increases. B) It decreases. C) It does not change. D) It increases for frequencies below resonance and decreases for frequencies above resonance. E) It decreases for frequencies below resonance and increases for frequencies above resonance.