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An infinitely long line of charge has a linear charge density of 7.00×10-12C/m . A proton is at distance 16.0cm from the line and is moving directly toward the line with speed 2200m/s . How close does the proton get to the line of charge?
A 40-g block of ice is cooled to ?72°C and is then added to 640 g of water in an 80-g copper calorimeter at a temperature of 27°C. Determine the final temperature of the system consisting of the ice, water, and calorimeter.
a car is accelerating while its horn is sounding. just after the car passes a stationary person the person hears a
As observed from Earth, rocket Alpha moves with speed 0.814c and rocket Bravo travels with a speed of 0.638c. What is the speed of rocket Alpha
A potter's wheel -- a thick stone disk of radius 0.500 m and mass 110 kg -- is freely rotating at 50.0 rev/min. Find the effective coefficient of kinetic friction between the wheel and the rag
A point charge of +5.34 ?C is located at the center of a sphere with a radius of 12.6 cm. Determine the electric flux through the surface of the sphere.
To throw the discus, the thrower holds it with a fully outstretched arm. Starting from rest, he begins to turn with a constant angular acceleration, what will be the speed of the discus at release
A slab of copper of thickness b = 2.30 mm is thrust into a parallel-plate capacitor of plate area A = 2.00 cm2 and plate separation d = 5.00 mm, How much work is done on the slab as it is inserted
A small postage stamp is placed in front of a concave mirror (radius = 1.3 m), such that the image distance equals the object distance. What is the magnification of the mirror
Prove that when reflected, a ray of light incident upon a plane mirror rotates through an angle of 2q if the mirror is rotated through an angle of q. The mirror rotates about an axis that is perpendicular to the plane of incidence of the ray.
What is the normal force that the incline exerts on the block. find the acceleration of the block.
A mass of 12.2 kg is attached to a string which is wrapped around a cylindral spool of radius 10 cm and moment of inertia 4.00 kg* m square.
what is the average age of a bone that has 85 beta emissions per minute from a 20 g of carbon found in that fossil. half life time of carbon-14 is 5730 years
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