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What is the resistance of each bulb in a car, which contains a 6-v battery supplying a total of 48 W to two identical headlights in parallel?
A flashlight uses batteries that add up to 1.5 V and has a power output of 0.61 W. How much current is drawn from the batteries? What is the effective resistance of the flashlight?
A T-bar tow is used to pull 80 skiers up a 600-m long slope inclined at 15.0 degrees to the horizontal at a speed of 2.5m/s. Find the motor power required to run the T-bar
You are designing a diving bell to withstand the pressure of seawater at a depth of 260m. What is the gauge pressure at this depth
A point charge Q = 8.50×10-6 C is at the center of a conducting spherical shell of radius R = 17.90 cm. What is the field just outside the shell
A roller coaster is traveling along a vertical circular loop, How much work is done by the frictional force from Position 1 to Position 2
A circular wheel has a radius R = 0.45 + or - 0.02 m. The wheel is observed to be rotating uniformly with period T = 2.00 +or- 0.05 s. Compute the frequency with which the wheel spins
question1a person eats a dessert that contains 210 calories. this calorie unit with a capital c is the one used by
A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 2 g coins stacked over the 11.5 cm mark, the stick is found to balance at the 44.5 cm mark. What is the mass of the meter stick?
The 20-g centrifuge at NASA's Ames Research Center in Mountain View, California, is a horizontal, Determine the rotation rate, in revolutions per second, required to give the astronaut a centripetal acceleration of 19.4g
A 4.60 kg block of ice at 0°C is added to an insulated container partially filled with 11.6 kg of water at 15.0°C. Find the mass of the ice that was melted
Two bicycle tires are set rolling with the same initial speed of 3.30m/s along a long, straight road, What is the coefficient of rolling friction for the tire under low pressure
A thin, flat washer is a disk with an outer diameter of 14 cm and a hole in the center with a diameter of 2 cm. The washer has a uniform charge distribution and a total charge of 8 nC. What is the electric field on the axis of the washer at a dist..
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