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Q. A uniform electric field with a magnitude of 250 N/C is directed in the positive x direction. A 12 uC charge moves from the origin to the point(20.0 cm, 50.0 cm). what is the change in the electrical potential energy of the system as a result of the change in position of this charge?
Q. Two identical point charges are fixed to diagonally opposite corners of a square that is 0.500 m on a side. Each charge is +3.0 x 10-6 C. How much work is done by the electric force as one of the charges moves to an empty corner?
A 1590 kg car starts from rest on a horizontal road and gains a speed of 61 km/h in 30 s (a) what is its kinetic energy at the end of the 30 s.
A baseball player runs 27.4meters from batter's box to first base,overruns first base by 3.0 meters,and then returns to first base. Compared to the total distance traveled by the player,magnitude of the players total displacement from the batters ..
The heels on a pair of women's shoes have radii of 0.42cm at the bottom. If 32 percent of the weight of a woman weighing 580N is supported by each heel, find the stress on each heel.
What is inductance of the solenoid
Find a largest image that can be completely imaged on a 35mm film.
A solenoid is to be constructed that will have a resistance of 5.00 ohms and produce a magnetic field of 0.0400 T at its center when it carries a current of 4.00 A. The solenoid will be made of wire that is 0.500 mm in diameter and have a radius that..
What is wind velocity
Runner A is at first 5.4 km west of a flagpole and is running with a constant velocity of 2.6 km/h due east. Runner B is initially 3.0 km east of the flagpole and is running with the constant velocity of 8.8 km/h due west. What would be the distance ..
A pendulum of length 1.5 m is held out to point A. At the vertical position, an overhang effectively cuts the length of the pendulum by an amount equal to 1.09 m. (That is, 1.0 m is no longer free to swing.) How long does this pendulum take for one o..
How much time elapses between first splash and second splash
The sun is more massive than the moon, but the sun is farther from the earth. Which one exerts a greater gravitational force on a person standing on earth? Give the answer by determining the ratio Fsun/ Fmoon of magnitudes of gravitational forces.
define the hazards for astronauts inside any spacecraft moving in the vicinity of a pulsar.
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