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Title: What spectral class of star fits between a type G and a type M? Post by: Silvertxpia on Feb 23, 2018 What spectral class of star fits between a type G and a type M?
a. L b. K c. A d. F [Ques. 2] Which of these instruments is based on the theory of matter waves? a. Microwave oven b. X-ray tube c. Electron microscope d. Cathode ray tube [Ques. 3] An ac power generator produces 50 A (rms) at 3600 V. The voltage is stepped up to 100000 V by an ideal transformer and the energy is transmitted through a long distance power line which has a resistance of 100 ohms. What percentage of the power delivered by the generator is dissipated as heat in the long-distance power line? [Ques. 4] White dwarfs are relatively a. hot and dim. b. cool and dim. c. hot and bright. d. cool and bright. [Ques. 5] The de Broglie wavelength of a particle is inversely proportional to both its speed and its a. spin. b. electric charge. c. volume. d. mass. [Ques. 6] A 10.0- resistor, 10.0-mH inductor, and 10.0-F capacitor are connected in series with a 10.0-kHz voltage source. The rms current through the circuit is 0.200 A. Find the rms voltage drop across each of the 3 elements. [Ques. 7] What color are the stars with the hottest photosphere? a. White b. Yellow c. Red d. Blue [Ques. 8] Calculate the de Broglie wavelength for an electron (m = 1 10-30 kg) moving at 3.1 106 m/s. a. 1.8 1010m b. 2.4 1010m c. 1.9 1010m d. 2.1 1010m [Ques. 9] Suppose the circuit parameters in a series RLC circuit are: L = 1.00 H, C = 10.0 nF, R = 100 , and the source voltage is 220 V. Determine the resonant frequency of the circuit and the amplitude of the current at resonance. [Ques. 10] The name of which astronomer is most closely linked with that of Henry Russell? a. Henrietta Leavitt b. Johannes Kepler c. Ejnar Hertzsprung d. Edwin Hubble Title: What spectral class of star fits between a type G and a type M? Post by: AmanBhutani on Feb 23, 2018 Content hidden
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