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Four point charges are located at the corners of a square with each side of length (l) = 5.0 cm, as shown in the figure from the last problem. Charge q1 = q2 = +2.0 μC and charge q3 = q4 = +1.0 μC. Assume that a charge q5 = -2.0 μC is placed at point P. What is the force in unit vector notation on charge 5 due to other four charges?
A spacecraft moving away from Earth emits a 4748 Hz signal. A scientist on Earth measures thesignal to be 4747 Hz. What is the speed of the spacecraft relative to Earth
q1. a student in a parked car honks the horn that has a proper frequency of 310.00 hz. an observer in an approaching
A 0,52 um thick soap film (n=1,41) in air is illuminated with white light in a direction perpendicular to the film. For what wavelength in the range 350-700 nm is there : a) fully constructive interferences b) fully destructive interference in the re..
what is refraction? how and why does it occur? why does light change its speed as it passes from one medium to
A guitar string of length L =1 is pulled upward at the middle so that it reaches height h. What is the subsequent motion of the string if it is suddenly released
Of the charge Q initially on a tiny sphere, a portion q is to be transferred to a second, nearby sphere. Both spheres can be treated as particles. For what value of q/Q will the electrostatic force between the two spheres be maximized?
q1. a projectile is fired horizontally from a gun that is 33.0 m above flat ground emerging from the gun with a speed
suppose that before collision slider a ma200g is traveling at 3.6 ms and slider b mb210g is at rest.a what is the total
A 6 centimeter diameter, 10 centimeter long cylinder contains 100 mg of oxygen (O2) at a pressure less than 1 atm. Evaluate what is the temperature of the gas
One particle has a mass of 4.41 x 10-3 kg and a charge of +6.92 ?C. A second particle has a mass of 6.52 x 10-3 kg and the same charge. Find the initial separation between the particles
An eagle with 1.8m wingspan flaps its wings 21 times per minute, each stroke extending from 42%u2218above the horizontal to 42%u2218 below. What's the average tangential velocity of the wingtip
A 1000kg car coasting at 72.0km/h on a level frictionless road comes to a 15 degree incline. Calculate how far the car will travel before coming to rest
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