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Negative charge -Q is distributed uniformly around a quarter-circle of radius a that lies in the first quadrant with the center of curvature at the origin. find the x components and y components of the net electric field at the origin for Q=20uc and a= 3.0 cmshow steps please
A 2kg piece of ice @ 0C (273K) is placed in 27C (300k) body of water. Latent heat of fusion is 334kJ/kg. What is the work done by the ice
You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball. How tall is the building that the child is standing on
Two planets are on a collision course, heading directly toward each other at 0.250c. A spaceship sent from one planet approaches the second at 0.750c as seen by the second planet. find the velocity of the ship relative to the first planet
Kinetic energy KE has dimensions kg · m^2/s^2. It can be written in terms of the momentum p and mass m as KE=p^2/2m. (a) Determine the proper units for momentum using dimensional analysis. (Use the following as necessary: kg, m, and s.)
Two identical point charges are fixed at opposite corners of a square whose sides have a length of A test charge, Determine the speed of the test charge when it reaches the center of the square
You were driving a car with velocity ‹ 19, 0, 11 › m/s. You quickly turned and braked, and your velocity became ‹ 13, 0, 15 › m/s. The mass of the car was 1200 kg. What was the (vector) change in momentum
An electron enters a region of space containing a uniform 0.0000199-T magnetic field. Its speed is 199 m/s and it enters perpendicularly to the field. Find the radius of the electron's orbit
Two blocks are connected by an ideal string that passes over a massless, frictionless pulley. determine the magnitude of the blocks acceleration
To stretch a certain spring by 2.40cm from its equilibrium position requires 8.00J of work. What was the maximum force required to stretch it by that distance
In a science fiction novel, a starship takes three days to travel between two distant space stations according to its own clocks. How fast did the starship travel, relative to the space station
Find a largest image that can be completely imaged on a 35mm film.
The two stick together and move off with a speed of 4.0 m/s. Evaluate what is the mass of the second car?
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