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At three corners of a rectangle (length = 4d, height = d), the following charges are located: +q1 (upper left corner), +q2 (lower right corner), and q (lower left corner). The net electric field at the (empty) upper right corner is zero. Evaluate the magnitudes of q1 and q2 charges. Express your answers in terms of q.
question the electric potential at a point that is halfway between two identical charged particles is 300 v. what is
A 115-V source of emf is attached to a heating element with is a coil of nichrome wire (r=100*10^-8) of cross section 1.20 mm^2. What must be the length of the wire
Two equal piano wires have a fundamental frequency of 600 Hertz when kept under the same tension. Obtain what fractional increase in the tension of one wire
One end of a wire is attached to a ceiling, and a solid brass ball is tied to the lower end. The tension in the wire is 140 N. What is the radius of the brass ball
Two point charges are fixed to rectangular coordinate system, Charges of q1 = 3.5uC and q2 = -15 uChave coordinates (0.55,0) and (0,0) in meters respectively
the volume of a gas is decreased by a constant external pressure of 0.200atm, changing from 2.10 litters to 0.58 litters. during this compression
A skier of mass 71.0 kg is pulled up a slope by a motor-driven cable. How much work is required to pull him a distance of 57.5 m up a 31.0° slope (assumed frictionless) at a constant speed of 2.20 m/s
A loudspeaker of mass 25.0 is suspended the distance of = 2.40 below ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 2.50. What is the tension in each of cables.
A projectile of mass m is fired from the ground with an initial speed vi at an angle of q above the horizontal. At the highest point of its arc, it explodes into three pieces, A, B and C, all of equal mass. Immediately after the explosion, pieces A a..
an interesting but oversimplified model of an atom pictures an electron in orbit around a proton. suppose this electron
the acceleration of gravity at the surface of moon is 1.6 m/s^2. A 5.0 kg stone thrown upward on moon reaches a height of 20m, find its intial velocity
a speedboat heads west at 112 kmh for 17.0 min. it then travels at 69.0deg south of west at 89.0 kmh for 8.0 min. a
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