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Question: Two thin converging lenses are placed on a common axis, so that the center of one of them coincides with the focus of the other. An object is placed at a distance twice the focal length from the left-hand lens. Where will its image be? What is the lateral magnification? The focal length of each lens is f.
Three 13cm long rods form an equilateral triangle. Two of the rods are charged to + 19nC, the third to - 19 nC. What is the electric field strength at the center of the triangle
A pipe with both ends open has a fundamental frequency of 510 Hz. You cover one end of the pipe. What is the new fundamental frequency?
The ball has a mass of 30 kg and a speed v=4m/s at the instant it is at its lowest point, 0 degrees.. Determine the tension in the cord at the instant = 25. Neglect the size of the ball. Determine the rate at which the ball's speed is decreasing at t..
Can you see the contradiction? If not, just focus on the question I just asked, What is the point of telling a lie?
A transformer is constructed that has 120 turns of wire on the primary side and 430 turns of wire on the secondary (load) side. what is the AC current measured on the secondary side
A shielding enclosure with no apertures has a shielding effectiveness of 100 dB at 100 MHz. Determine the shielding effectiveness of the enclosure, at 100 MHz and at 200 MHz, if 20 closely spaced, equal size apertures were cut into one of its pane..
A 1,030-kg car is pulling a 285-kg trailer. Together, the car and trailer have an acceleration of 2.00 m/s2 in the positive x-direction. determine the force exerted by the trailer on the car
an explosion breaks an object into two pieces one of which has 1.5 times the mass of the other. if 7400 j were released
in an arcade gamea ball is launched from the corner of a smooth inclined plane.the inclined plane makes a 30 degree
A glass plate whose index of refraction is 1.45 is immersed in a liquid. The surface of the glass is inclined at an angle of 54.0° with the vertical. What is the index of refraction of the alcohol
A pencil is held perpendicular to the optical axis of a concave spherical mirror. The pencil is 91 cm from the center of the mirror, What is the magnification of the pencil's image
A 0.396-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 18.5 N/m. The blockrests on a frictionless surface.
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