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A dog team pulls a sled on ice with a horizontal force of 300 N, covering a distance of 15 m in 5 seconds. The sled moves on the ice without friction. What is the change in the momentum of the sled during this event?
An electron and a proton are a distance r = 7.7 x 10-9 m apart. How much energy is required to increase their separation by a factor of four
A 5.0-kg block of aluminum is heated from 20degrees celsius to 90 degrees celsius at atm. pressure. estimate the work done by the aluminum
A ski tow operates on a 15.0degrees slope of lenth 300m. The rope moves at 12.0km/h and provides power for 50 riders at onetime, Estimate the power required to operate the tow
Two charges are fixed in place. One charge is positive and has6.13 times the magnitude of the other charge, which is negative.The negative charge lies at the origin, and the positive charge isat x = +12.2 cm.
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 129 kg laser sensor that measures the thickness of the ice, find the tension in the cable towing the sensor
A laser beam is incident at an angle of 33.0° to the vertical onto a solution of cornsyrup in water. If the beam is refracted to 24.84° to the vertical, what is the index of refraction of the syrup solution?
A nozzle of inner radius 1.05 mm is connected to a hose of inner radius 7.95 mm. The nozzle shoots out water moving at 25.5 m/s. At what speed is the water in the hose moving
Suppose you form a dipole from two point charges (with a magnitude of charge, q). the postive charge is located at the point x=y=0, z=d/2. and the negative charge is located at x=y=0, z=-d/2. determine the magnitude of the electric field along the..
A 170? resistor, a 9.00×10?2?F capacitor, and a 350mH inductor are connected in series to a voltage source with amplitude 240V, What is the resonance angular frequency
A circular coil enclosing an area of 180 cm2 is made of 210 turns of copper wire. The wire making up the coil has resistance of 9.0 ?, what is the average current in the coil during that time
An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 2.20 mm. Calculate the surface charge density
two objects are identical and small enough that their sizes can be ignored relative to the distance between them which
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