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Instead of using batteries, a certain type of flashlight has a built in hand pump which you can squeeze to generate the power necessary to light the bulb. Suppose that squeezing the pump at a rate of twice per second generates 20 watts. If the light bulb has a resistance of 0.60 ohms, and you squeeze twice per second, what will be the potential difference across the light bulb?
A copper wire has a resistance of 29 ? at 19° C. An aluminum wire has three times the length and two times the radius of the copper wire. What is the resistance of the aluminum wire at 19° C
The induced electric field 15 from the axis of a solenoid with a 10 radius is 46. Find the rate of change of the solenoid's magnetic field
A car accelerates from rest to a kinetic energy of 2.06 x 105 J in a distance of 638 m. How much force did the car's engine deliver to produce this acceleration.
You've made the finals of the Science Olympics! As one of your tasks, you're given 1.1g of copper and asked to make a cylindrical wire, What length will you choose for your wire
Find the critical angle for an optical fiber whose core has n value of 1.55 and whose cladding has n value of 1.20
Three moles of an ideal monatomic gas are at a temperature of 345 K. What is the final temperature of the gas
A 1.00 kg soccer ball is kicked down field at 5 m/s by a Bob on Team A. Tom, a member of Team B, runs up and kicks the ball so that it is traveling at 15 m/s, what is the impulse acting on the ball
If the bee walks on the stick with a speed of 1.44 cm/s relative to the still water, what is the speed of the stick relative to the water
A capacitor is connected across the terminals of an ac generator that has a frequency of 424 Hz and supplies a voltage of 26 V. Find the capacitance of the second capacitor
the motor slows from 80 rad/s to 40rad/s while the turning the drum through an angle of 120 radians. Illustrate what is the magnitude of the angular acceleration of the motor?
a car traveling 85 km/hr strikes a tree. the front end of the car compresses and the driver comes to rest after traveling 0.8m. Determine the time it takes the car to stop
What is the acceleration in m/s of a 0.001kg bullet if the force of recoil gives an acceleration of 4.390 m/s? The gun has mass of 0.20 kg.
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