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Points A and C each have an electric potential of +4 V, and point B has an electric potential of +18 V. How much work is required to take 2 C of charge from A to B to C?
A 5 kg ball is dropped and hits the ground with a velocity of 14 m/s. using the law of conservation of energy, what height was it dropped from
A blackened, solid copper sphere that has a radius equal to 2.5 cm hangs in an evacuated enclosure whose walls have a temperature of 29°C. find the initial rate at which its temperature changes
A wire has a length of 6.20 10-2 m and is used to make a circular coil of one turn. obtain the maximum torque that this coil can experience
What is the magnitude of the force on the bead. find the charge of the particle.
In the figure to the left, the pulley (which is in the form of a disk) has a mass of 7.50 kg and a radius of 35 cm. What is the speed of the iron block
The mean lifetime of stationary muons is measured to be 2.2 µs. Find the speed of these cosmic-ray muons relative to Earth
A constant horizontal force a pushes a kg FedEx package across a frictionless floor on which an xy coordinate system has been drawn. package's x and y velocity components versus time t.
A physics lab demonstrates the principles of simple harmonic motion (SHM) by using a spring affixed to a horizontal support. The student is asked to find the spring constant, k. After suspending a mass of 335.0 g from the spring, the student notic..
An object having a net charge of 24μC is placed in a uniform electric field of 610 N/C directed vertically. What is the mass of the object if it floats?
A 60kg person walks on a 100kg log at therate of 0.80m/s (with respect to he log). With what speed does the log move
150g of steam at 100C (373K) is injected into a container containing 250g of ice and 150g water both at 0C (273K). What is the change in entropy of the environment
A golfer drives a 0.046kg golf ball from an elevated tee, giving the ball an initial horizontal velocity of 45 m/s. (a) what is the magnitude of the average force exerted by the club on the ball if the contact time for the golf club on the ball du..
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