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A galvanometer has a coil resistance of Rgalv = 89.7 ?. It is to be made into an ammeter with a full-scale deflection equal to I = 2.35 A. If the galvanometer deflects full scale for a current of Igalv = 135 mA, what size shunt resistor should be used?
A converging lens of focal length 18 cm is 30 cm to the left of a diverging lens of focal length - 6 cm. a coin is placed 12 cm to the left of the converging lens. Find (a) location and (b) magnification of the coin's final image.
A certain single ion channel is selectively permeable to K and has a resistance of 1.15 GOhms. How many K ions travel through the channel during this time
An experiment finds that standing waves on a 0.800-m-long string, fixed at both ends, occur at 24.0 Hz and 32.0 HZ, but at no frequencies in between. What is the wave speed on the string
A typical American family uses 1120 kWh of electricity a month. On average, what is the resistance of a household
A heart defibrillator delivering 400 J of energy by discharging a capacitor initially at 10,000 V has a capacitance of 8.00 µF (see Example 18.11 of the textbook). What is the voltage of the second defibrillator
An RLC series circuit has a 202 ? resistor and a 25.0 mH inductor. At 8220 Hz, the phase angle is 45.0°. Find the minimum possible capacitance of the circuit
q1. a 3.3 block of wood sits on a table. a 3.0 bullet fired horizontally at a speed of 480 goes completely through the
An unstable particle called the pion has a mean lifetime of 25 ns in its own rest frame. What is the mean lifetime of the pions as measured in the laboratory frame
In which scenario do you experience the larges acceleration? Explain why using physical principles you have learned.
A biology student uses a simple magnifier to examine the structural features of an insect's wing. The wing is held 3.60 cm in front of the lens, What angular magnification is achieved
Parallel conducting tracks, separated by 2.79 cm, run north and south. There is a uniform magnetic field of 1.27 T pointing upward (out of the page). What is the direction of the magnetic force on the rod
A 4.8-m-diameter merry-go-round is initially turning with a 4.3 s period. It slows down and stops in 16 s. Before slowing, what is the speed of a child on the rim
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