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A proton is released from rest in a uniform electric field of magnitude 421 N/C.
(a) Find the electric force on the proton.
(b) Find the acceleration of the proton.
A railroad car of mass 3.4 x 104 kg moving at 4.00 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
If light is measured traveling through some medium at 0.90c, where c represents the speed of light in a vacuum, what is the index of refraction of the medium
Two skaters, A and B, of equal mass are moving in clockwise uniform circular motion on the ice. What is the ratio of speeds of the skaters
When an object is 12 centimeter in front of a concave mirror, the image is 3.0 centimeter in front of the mirror? Evaluate what is the focal length of the mirror
An astronaut at rest on Earth has a heartbeat rate of 70 beats/min. When the astronaut is traveling in a spaceship at 0.87c, what will this rate be as measured by the following. An observer also in the ship
A 44-g ball consists of a plastic spherical shell and a water-filled core. the shell has an outside diameter equal to 41.6 mm and an inside diameter equal to 16.5 mm. What is the density of the plastic?
The image behind a convex mirror (radius of curvature = 92 cm) is located 8 cm behind the mirror. Where is the object located
A straight 2.06 -mm-diameter copper wire can just 'float' horizontally in air because of the force of the Earth's magnetic field B, What current I does the wire carry
Consider two identical 25-micro-coulomb point charges, each of 18 mg mass. Let them initially be at rest, 80 cm apart. How fast (in m/s) will each charge be moving when the charges are very far apart
at some point in its orbit our asteroid is moving with a speed of 20 kilometers per second. determine the kinetic
Two point charges and are held in place 4.50 apart. Another point charge -2.5 of mass 6 is initially located 3.00 from each of these charges and released from rest. You observe that the initial acceleration of -2.50 is 354 upward, parallel to the ..
A particle moving along the x-axis has its position described by the function x =( 5.00 t3? 3.00 t+ 2.00 )m, what are the particle's position, velocity and acceleration
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