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A charge of +10.4 micro-Coulombs is placed at the origin of a coordinate system. Another charge of -13.1 micro-Coulombs is placed at x = +0.25 m, y = +0.17 m. A third charge of +10.4 micro-Coulombs is placed at x = -0.25 m, y = 0 m. At what angle is the total electric filed is directed at the the point x = 0 m, y = +0.17 m if measured counter-clockwise from the positive x axis?
The tension in a copper wire of length 0.5 m with two ends fixed is 200 N. What is the tensile stress if the cross sectional area is 4.0 mm^2
An 875.0-kg compact car speeds up from 22.0 m/s to 44.0 m/s while passing another car. How much work is done on the car to increase its speed
Find the induced current I in the resistor. A rolling axle, 1.30 m long, is pushed along horizontal rails at a constant speed v=2.91 m/s. A resistor R=0.475Ω is connected to the rails at points a and b, directly opposite from each other.
The lower boundary of the plate is defined by: y = 0.650 x2. The plate has a mass of 3.70 kg. Find the moment of inertia of the plate about the y-axis
A certain camera has f-numbers that range from 1.3 to 5. If the focal length of the lens is 49 mm, what is the range of aperture diameters for the camera
The electron in a hydrogen atom orbits the proton at a radius of 0.053 nm. What is the electric field due to the proton at the position of the electron
An aluminum rod is 17.0 cm long at 20°C and has a mass of 350 g. what is the change in length of the rod
Two identical positive charges exert a repulsive force of 6.4* 10^-9 N when separated by a distance of 3.8*10^-10 m. find the charge of each.
A shopper standing 2.40 m from a convex security mirror sees his image with a magnification of 0.240. What is the focal length of the mirror
Two titanium spheres approach each other head-on with the same speed and collide elastically. What is the mass of the other sphere
The coefficient of kinetic friction between the rock and the surface is 0.300. Illustrate what average thermal power is produced as the rock stops?
A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. What is the pressure at the narrow end of the segment
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