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A circuit contains a resistor in series with a capacitor, the series combination being connected across the terminals of a battery, as in the figure below. The time constant for charging the capacitor is 2.6 s when the resistor has a resistance of 1.9 multiply.gif 104 ?. What would the time constant be if the resistance had a value of 5.1 multiply.gif 104 ?
An object is placed to the left of a lens, and a real image is formed to the right of the lens. How far from the lens is the object
A student driving home for the holidays starts at 7:00 AM to make the 700km trip, practically all of which is on nonurban interstate highways. What must be her minimum average speed
A toy train is pushed forward and released at xi = 1.60 m with a speed of 2.60 m/s. It rolls at a steady speed for 1.30 s, and then one wheel begins to stick. The train comes to a stop 6m from its starting point. What is the train's acceleration a..
A nozzle is a device that accelerates the flow of a fluid. A circular nozzle that converges from an inside diameter of 5 cm to 3.5 cm carries a gas at a volume flow rate of 0.10 m3/s. Find the change in average velocity of the gas
With a 1420-W toaster, how much electrical energy is needed to make a slice of toast (cooking time = 1.6 minute)
A jet of water squirts out horizontally from a hole near the bottom of the tank, what is the height h of the water level in the tank
Laser light of wavelength 632.8 nm falls normally on a slit that is 0.0250 mm wide. The transmitted light is viewed on a distant screen where the intensity at the center of the central bright fringe is 8.50 W/m2.
A mass less string is pulled with a force 79 N to the right.The string is wrapped around a frictionless pully of non zeromoment of inertia and radius of .5 m and lifts a hanging block ofmass m=5kg. What is the moment of inertia of the pully
1) The intensity level of sound 200 m from a loud speaker at a heavy metal concert is 100 dB. At what distance from the speaker will the sound intensity level will be a tolerable 80 dB? Assume that thespeaker produce spherical sound wave.
A segment of wire carries a current of 25 A along the x axis from x = -2.0 m tox = 0 and then along the z axis from z =0 to z = 3.0m. In this region of space, the magnetic field is equal to 40 mT in the positive z direction. What is the magnitude of ..
A powerful bolt of lightning can carry a current of 225 kA. Treating a lightning bolt as a long, thin wire, determine the magnitude of the magnetic field produced by such a bolt of lightning at a distance of 93 meter
Decoherence times can be estimated and are inverse functions of mass. Since there are no upper bounds on mass, can decoherence time be shorter than Planck time?
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