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Three equal positive charges Q are each fixed at a corner of an equiliateral triangle of side length a. A negative charge -Q is placed at the midpoint of one of the sides.
(a) Draw a free body diagram for the negative charge. Find the magnitudes of the net force on the negative charge.
(b) Find the magnitudes of the net electric field at the triangle's center. Draw a diagram showing the individual electric field vectors due to each charge at the triangle's center.
calculate the average acceleration in m/s^2 (meter per second square), using a coordinate system with the X axis in the direction of the car's original motion and the Y axis toward the side of the road to which the car skids.
What is the potential difference measured by voltmeter
Two sinusoidal waves of the same period, with amplitudes of 4.0 and 6.0 mm, travel in the same direction along a stretched string; they produce a resultant wave with an amplitude of 9.225 mm. The phase constant of the 4.0 mm wave is 0. What is the..
A car of mass = 1200 traveling at 65 enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires. What is the radius of the turn if = 20 (assuming the car continues in unifo..
Find out the maximum distance d (along the ladder) that the monkey can climb up the ladder before rope breaks.
A simple pendulum has a mass of 0.350 kg and a length of 7.00 m. It is displaced through an angle of 12.0° and then released. Solve this problem by using the simple harmonic motion model for the motion of the pendulum.
Suppose the skin temperature of a naked person is 34 °C while the person is standing inside a room whose temperature is 25 °C. The skin area of the individual is 2 m2.
95.8 kg of ice is melted into water then raised to a temperture of 325.8 K. How much energy is needed to complete this process?
A spring has a force constant of 323 N/m and an unstretched length of 6 cm. One end is attached to a post that is free to rotate in the center of a smooth table, as shown in the top view below. The other end is attached to a 4-kg disk moving in un..
What is the charge q. suppose the speed of sound in air to be 343 m/s.
Find out the coefficient of static friction
If the barge can only be pushed 18 cm deeper into the water before water overflows to sink it, how many 400 kg horses can it carry.
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