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Four point charges are at the corners of a square of side a as shown in the figure below. Determine the magnitude and direction of the resultant electric force on q, with ke, q, and a left in symbolic form. (Let B = 2.5q and C = 6.5q. Let the +x-axis be pointing to the right.)
the direction as being 45 degrees CC from the x-axis.
A 65 kg crate slides on a rough plane inclined upward at an angle of 28 degrees, what is the magnitude of the sliding friction force on the box, what is the coefficient of kinetic friction between teh box and the incline
Earth has a radius of 6.38 × 106 m, and is about 1.50 × 1011 m from the Sun. Mars has a radius of 3.40 × 106 m, what is the intensity of electromagnetic solar radiation at Mars
After an unfortunate accident at a local warehouse you have been contracted to determine the cause. A jib crane collapsed and injured a worker. what was the load on the crane before the collapse
You are designing the section of a roller coaster ride shown in the figure. Previous sections of the ride give the train a speed of 12.5 m/s at the top of the incline, which is 38.3 m above the ground. What is the minimum radius you can use for the..
In February 1955, aparatrooper fell 370 m from anairplane without being able to open his chute but happened to landin snow, What is the magnitude of the impulse on him from the snow
A father racing his son has 2/3 the kinetic energy of the son who has 2/3 the mass of the father. What is the origianal speed of the father
A cue ball (mass = 0.165 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick, which applies an impulse of +1.61 N·s to the ball. Find the velocity of the second ball just after it is struck
the earth completes a circular orbit around the sun in one year. the orbit has a radius of 93,000,000 miles. what is the speed of the earth around the sun in m/s? Report your result using scientific notation.
Kathy tests her new sports car by racing with Stan, an experienced racer. Both start from rest, Find the time at which Kathy overtakes Stan
A compressed spring shoots the block radically outward along a frictionless groove in the surface of the turntable. Illustrate what is the turntable's rotation angular velocity when the block reaches the outer edge?
A 62kg hiker starts at an elevation of 1500m and climbs to the top of a 3500m peak, What is the minimum work required of the hiker
a segment of wire supplying current to a motor of a submerged submarine carries 800A and feels a 3.6N repulsive force from a parallel wire 5cm away
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