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You briefly push a toy car. it rolls 2 meters in about 10 seconds in comes to rest. you estimate that your push gave the car a speed of about 40 cm/s and the car decelerated at a rate of about 4 cm/s2. How much momentum did you transfer to the toy car if its mass is about 100 grams? How much momentum was lost as it came back to rest after being pushed?
a parallel-plate capacitor is formed from two circular 12.5-cm-diameter plates spaced 1.0 mm apart. the electric field
Hair dryer draws a current of 9.2a. How long does it take 1.9*10^3 C of charge pass through? How many electrons does this represent.
You're carrying a 4.0-m-long, 25 poles to a construction site when you choose to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. How much force should you exert to keep pole motionles..
A 0.0017T magnetic field and a 5.7 x 10^3 N/C electric field both points in the same directions. Determine the magnitude and directions of the net force on the charge
an electric dipole consisting of charges of magnitude 4.10 nc separated by 5.10 microm is in an electric field of
suppose you have a near-point distance of 16 cm. the angular resolution of the eye is determined by diffraction see the
A 31000- kg railroad car with an open top rolls along a straight track with a speed of 4.91 km/h. It passes under a water fall that pours water straight into the car at a rate of 600 kg/s How much force is necessary to keep the car traveling at const..
A drop of water on a countertop reflects light from a flower held 3.10 cm directly above it. What is the focal length of the water drop
A capacitor is fully charged by a 3V battery and has 0.02 J of energy stored in it. What is the charge on its side of the capacitor
A vessel which contains an ice-water mixture at 0C is in thermal contact with a water-steam mixture at 100 C. What is the change in the entropy of the water-steam mixture at 100C
Two metal spheres, each of mass 14 g and initially at rest, are dropped from a height of 6 m in an evacuated chamber. One sphere has a charge of +50 ?C, and the other has a charge -50 C.
A mass m = 11.0 kg rests on a frictionless table and accelerated by a spring with spring constant k = 4093.0 N/m. How much work is done by the spring as it accelerates the mass
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