Using a resistor and two different value capacitors, which of the following combinations in an RC circuit would give the greatest time constant?
a. the resistor in series with both capacitors in series with each other
b. the resistor in series with both capacitors in parallel with each other
c. the resistor in series with the larger value capacitor
d. the resistor in series with the lower value capacitor
b
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An object moving away from the observer will exhibit a(n) _______________ shift due to the Doppler effect
Fill in the blank(s) with correct word
Which of the following is evidence that convection occurs in the layers just below the Sun's photosphere?
a. Sunspots appear to be cooler than their surroundings. b. Solar prominences lift large loops of gas into the chromosphere and corona. c. The solar wind emits large numbers of charged particles. d. The Sun rotates differentially. e. The centers of granules are hot and moving upward away from the center of the Sun.
Which of the following statements about constellations is false?
A) There are only 88 official constellations. B) Some constellations can be seen from both the Northern and Southern hemispheres. C) Some constellations can be seen in both the winter and summer. D) It is possible to see all the constellations from Earth's equator. E) Most constellations will be unrecognizable hundreds of years from now.
A charged particle is moving with speed v perpendicular to a uniform magnetic field. A second identical charged particle is moving with speed 2v perpendicular to the same magnetic field
If the frequency of revolution of the first particle is f, the frequency of revolution of the second particle is A) f. B) 4f. C) 2f. D) f/2. E) f/4.