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Two 1.50 V batteries -- with their positive terminals in the same direction -- are inserted in series into the barrel of a flashlight. One battery has an internal resistance of 0.350 , the other an internal resistance of 0.170 . When the switch is closed, a current of 600 mA occurs in the lamp.
(a) What is the lamp's resistance?
(b) What fraction of the chemical energy transformed appears as internal energy in the batteries?
After reaching its maximum height, the ball moves into the hoop on its downward path, at 3.05 m above the ground. Using the principle of energy conservation,
A child goes down a playground slide with an acceleration of 1.30. Find out the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 34.0 below the horizontal.
In the figure, a block of mass m = 12 kg is released from rest on a frictionless incline of angle ? = 26°. Below the block is a spring that can be compressed 2.8 cm by a force of 330 N. The block momentarily stops when it compresses the spring by 6.9..
A storage tank has a diameter of 80 ft, a height of 25 feet, andcontains oil to a height of 15 ft. The suction pumps, whichcan handle 15, 000 bbl/d are started, but the safety valves areclogged and a vacuum is drawn in the tank.
assume you are standing on a train, both feet together, facing a window. The front of the train is to your left. The train starts moving forward.
Your friend is trapped on the roof of a burning building. He can jump to the next building by using the long-jump technique where he jumps 45 degrees to the horizontal. What do you advise him to do
A car at the Indianapolis-500 accelerates uniformly from the pit area, going from rest to 285 km/h in a semicircular arc with a radius of 190 m. Determine the tangential acceleration of the car
A flat circular coil with 105 turns, a radius of 10-2 m, and a resistance of 0.480 Ω is exposed to an external magnetic field that is directed perpendicular to the plane of the coil. Evaluate the magnitude of the magnetic field at the center of the..
If small test charge is taken as positive than why measured value of electric intensity be somewhat less than the actual value of elctric intensity and vica versa
Assume that our Sun has a binary companion of much smaller mass (say 10 times smaller), orbiting at the distance of Mars. Obtain the feedback effect associated with this property
A wrecking ball swings at the end of an 11.0 meter cable on a vertical circular arc. Evaluate what speed vf does the ball have when the cable makes an angle of 17.0 degree with respect to the vertical
what must the charge sign and magnitude of a particle of mass 1.50nc be for it to remain stationary when placed in a
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