When two or more resistors are connected in series to a battery
A)
the total voltage across the combination is the algebraic sum of the voltages across the individual resistors.
B)
the same current flows through each resistor.
C)
the equivalent resistance of the combination is equal to the sum of the resistances of each resistor.
D)
all of the given answers
E)
none of the given answers
D
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How many moles of air must escape from a 15.0-m × 9.0-m × 6.0-m room when the temperature is raised from 10.0°C to 20.0°C? Assume the pressure remains unchanged at one atmosphere while the room is heated. (R = 8.31 J/mol/K)
a. 4.9E+3 moles b. 1.2E+3 moles c. 2.2E+2 moles d. 7.9E+2 moles e. 5.0E+3 moles
The maximum permissible workday dose for occupational exposure to radiation is 11 mrem. A 77 kg laboratory technician absorbs 2.3 mJ of 0.5 MeV gamma rays in a work day. The relative biological efficiency (RBE) for gamma rays is 1.00
The number of gamma-ray photons absorbed by the technician in a workday is closest to: A) 3 × 1010 B) 3 × 109 C) 3 × 108 D) 1 × 109 E) 1 × 108
A method for identifying a black hole is to
A) search for radio waves from the accretion disk. B) locate a visible star that disappears when the black hole passes in front of it. C) search for their pulsar signal. D) look for voids in the star fields. E) look for its effects on a nearby companion.
In a double-slit experiment, the slit separation is 2.0 mm, and two wavelengths, 750 nm and 900 nm, illuminate the slits. A screen is placed 2.0 m from the slits
At what distance from the central maximum on the screen will a bright fringe from one pattern first coincide with a bright fringe from the other? A) 4.5 mm B) 3.0 mm C) 6.0 mm D) 1.5 mm