Using a capacitor and two different value resistors, which of the following combinations in an RC circuit would give the greatest time constant?
a. the capacitor in series with both resistors in series with each other
b. the capacitor in series with both resistors in parallel with each other
c. the capacitor in series with the higher value resistor
d. the capacitor in series with the lower value resistor
a
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____________________ clusters of galaxies contain closely spaced galaxies and often contain giant elliptical galaxies and a hot intergalactic medium
Fill in the blank(s) with correct word
When stars are moving away from us the color of their light is shifted toward the ______ (red or blue) end of the light spectrum because the wavelegth is ________ (shorter or longer).
a. red; longer b. red; shorter c. blue; longer d. blue; shorter
Alkaloid salts are not very soluble in the organic solvent diethyl ether. What might happen to the free-base form of caffeine dissolved in diethyl ether if gaseous hydrogen chloride, HCl, were bubbled into the solution?
A) A second layer of water would form. B) Nothing, and the HCl gas would merely bubble out of solution. C) The diethyl ether insoluble caffeine salt would form as a white precipitate. D) The acid/base reaction would release heat, which would cause the diethyl ether to start evaporating.
A square coil (length of side = 24 cm) of wire consisting of two turns is placed in a uniform magnetic field that makes an angle of 60° with the plane of the coil. If the magnitude of this field increases by 6.0 mT every 10 ms, what is the magnitude of the emf induced in the coil?
A. 55 mV B. 46 mV C. 50 mV D. 60 mV E. 35 mV