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Three charges are to be placed as follows: q1: 10.00 µC at (0.00,0.00) q2: -25.00 µC at (4.00,0.00) and q3: -2.00 µC at (0.00,-3.00) Each charge will be placed at its coordinates in this order. A) How much work is required to place q1 at (0,0)? (Assume q2 and q3 are an infinite distance away). B) With q1 now in place, how much work is required to place q2 at (4,0)? (Assume q3 is an infinite distance away). Hint: What is the final electric potential energy between q1 and q2? C) With q1 and q2 now in place, how much work is required to place q3 at (0,-3)? D) Calculate the electric potential energy of the group of three charges. Note: The electric potential energy of a group of charges is equal to the work required to assemble the group of charges.
A steel aircraft carrier is 364m long when moving through the icy North Atlantic at a temperature of 2.4°C. By how much does the carrier lengthen as it is traveling in the warm Mediterranean Sea at a temperature of 21° C.
A person pulls a toboggan for a distance of 40m along the snow with a rope directed 25 degrees above the snow. The tension in the rope is 83N.
A uniform magnetic field of 0.50 T is directed along the positive x axis. A proton moving with the speed of 60 km/s enters this field. The helical path followed by the proton shown has a pitch of 5.0 mm. find the angle between the magnetic field an..
A 50g ball travelling at 25m/s is bounced off a brick wall and rebounds at 22m/s. A high speed camera records this event. If the ball is in contact with the wall for 3.5ms, what is the average acceleration of the ball throughout this time interval..
A friend of yours is loudly singing a single note at 410 Hz when racing toward you at 26.1 m/s on a day when the speed of sound is 339 m/s. What frequency does your friend hear if you suddenly start singing at 410 Hz.
Tim and Rick both can run at speed v_r and walk at speed v_w, with v_{rm r} > v_{rm w}. They set off together on a journey of distance D. Rick walks half of the distance and runs the other half. Tim walks half of the time and runs other half.
Which of these do you think would allow sound to travel fastest? Explain the answer. Give two reasons - one relating to the density of molecules and the second to the elasticity of your choice - air, water, solid wood. Confirm to specifically stat..
An emf is induced in a conducting loop of wire 1.11m long as its shape is changed from square to circular.Find the average magnitude of induced emf if the change in shape occurs in 4.03s and the local 0.135-T magnetic field is perpendicular to the ..
Light is emitted by a sodium sample that is moving toward Earth with speed v. The wavelength of the light is 589 nm in the rest frame of sample. The wavelength measured in the frame of Earth is 537 nm. Find v.
A cylinderical water tank of radius 10ft and height 30ft is half filled with water. How much work is essential to pump all of the water out through a hole in the top of tank.
From what height did the student fall? Suppose that the only force acting on him all through the impact is that because of the ground.
Find the work done by this force on the particle.
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