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A proton moves 2.5 cm parallel to auniform electric field of E = 170N/C.
a) How much work is done by the field on the proton?b) What change occurs in the potential energy of the proton?c) What potential difference did the proton move through?
A 12 kg runaway grocery cart runs into a spring with spring constant 300 N/m and compresses it by 70 cm.What was the speed of the cart just before it hit spring.
A uniform solid disk with a mass of 28.3 kg and a radius of 0.514 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk, as drawing illustrates.
An object is located 21.4 cm to the left of a diverging lens having a focal length f = -34.2 cm. Determine the magnification of the image
19 g of helium gas are placed in a cylinder with a movable piston. The gas is compressed very slowly from a state of ( p1 = 5atm; v1 = 32 x 10^-3m^3) to a state of (p2 = 17atm; v2 = 9 x 10^-3m^3 )
A horizontal wire of length 0.57 m, carrying a current of 8.0 A, is placed in a uniform external magnetic field. Determine the magnitude of the external magnetic field
A ladder weighs 150 N, is 5m long, and is leaning against a frictionless wall at an angle of 30* with the horizontal. Draw an extended freebody diagram of this situation
Suppose an electron starting from rest is accelerated in a uniform electric field directed horizontally and having a magnitude of 3000N/C . The electric field covers a region of space 12.5cm wide.
In a science fiction movie, a 100 g base ball travelling with a speed of 60 m/s and an electron travelling at a speed of 1.2 x 10^8 m/s are approaching each other for a head-on collision
A wooden raft has a mass of 92kg. When empty it floats in water (density 1000 kg/m3) with 48 percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
The outside mirror on the passenger side of a car is convex and has a focal length of -7.7 m. Find the image distance of the truck
A 2000kg car accelerates from 20 to 60km/h on an uphill road. Determine the work done by the engine
A particle with a charge of 33.2 µC moves with a speed of 61.8 m/s in the positive x direction. What is the direction of the magnetic force on the particle relative to the positive z-axis
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