A tiny device containing many transistors, diodes, and resistors is a(n) ________
Fill in the blank(s) with the appropriate word(s).
integrated circuit
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Which of the following would violate the law of charge conservation?
a. A neutron, which has zero charge, becoming an electron and a proton. b. A plastic rod becoming charged by gaining electrons from the fur rubbed against it. c. A glass rod becoming positively charged by being rubbed with silk. d. An electroscope losing its charge by being grounded. e. An electron becoming a positron which has the same mass as an electron and a positive charge of the same magnitude.
The hydrogen spectrum has a red line at 656 nm, and a blue line at 434 nm. What is the first order angular separation between the two spectral lines obtained with a diffraction grating with 5000 rulings/cm?
a. 7.7° b. 16.6° c. 6.6° d. 3.2° e. 19.2°
In the above H-R diagram, which main sequence star is reddish in color?
A. A B. B C. C D. D E. E
A hypernova is a violent event caused by _____
a. the merger of two neutron stars b. the collapse of a rapidly rotating massive star c. the fusion of a layer of degenerate helium deposited on the surface of a neutron star d. carbon deflagration in a neutron star e. the crossing of jets from two compact objects