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One kilowatt-hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied for a time of one hour. A kilowatt-hour is the unit of energy used by power companies when figuring your electric bill. Determine the number of joules of energy in one kilowatt-hour.
The kinetic energy of a proton is 80% of its total energy. What is the momentum in kg·m/s of the proton?
A certain lightbulb has a tungsten filament having a resistance of 16 ? at 22°C and 155 ? when hot. Find the temperature of the filament when it is hot
question1alan leaves university of lethbridge at 800am to drive to au 650 km away. he leaves at an average speed of
choose one part of the photo-electric experiment that cannot be explained by assuming that light is a wave. why do we
Vector A points in the negative x direction. Vector B points at an angle of 60 above the positive x axis, Given A+B+C=0, find the magnitude of A and B
A train car with mass m1 = 556 kg is moving to the right with a speed of v1 = 8.6 m/s and collides with a second train car, What is the initial momentum of the first train car
Some bacteria are propelled by biological motors that spin hair-like flagella. How long does it take the motor to make one revolution
A beam of protons at an accelerator creates a current of 120 mu/A. how many protons strike the target in 30.0 s
A dragster accelerates to a speed of 100 m/s over a distance of 398 m. Determine the acceleration (assume uniform) of the dragster
Consider a camera that moves its lens back and forth to focus on objects near and far. As an object approaches, what direction should the lens move
As you walk away from a vertical plane mirror, your image in the mirror
find the tangential and centripetal components of the net force exerted on a car (by the ground) when its speed is 38 m/s, and it has accelerated to this speed from rest in 9.5 s on a curve of radius 370 m. The car's mass is 1000 kg.
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