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A concave mirror has a focal length of 43.3 cm. The distance among an object and its image is 75.0 cm. Find (a) the object and (b) the image distance assuming that the object lies beyond the center of curvature.
In astronomy, a parsec ( pc) is dened as the distance at which an object with a size of 1 astro-nomical unit (AU) would subtend an angle of 1 arc-second. Find the conversion factor between parsecs and astronomical units.
When a rifle is fired, the person firing the rifle absorbs the recoil. Consider an Olympic biathlete firing a competition rifle. What is the magnitude of the force felt by the athlete
A small sphere of charge q1 = 0.872 µC hangs from the end of a spring. When another small sphere of charge q2 = -0.642 µC is held beneath the first sphere, the spring stretches by d = 3.57 cm from its original length.
If a bullet that leaves the muzzle of a gun at 299 m/s is to hit a target 81.0 m away at the level of the muzzle, How far above the target is this point
A beam used in construction is made of steel, which has a coefficient of linear expansion of 1.3 × 10-5 K-1. find the change in the length of the beam due to cooling
A circular loop of radius 2.58 cm contains 65 turns of tightly wound wire. what torque acts on the loop
A loop of diameter d = 10 cm, carrying a current I = 0.2 A is placed inside a magnetic field = 0.3 T . The normal to the loop is parallel to a unit vector Calculate the magnitude of the torque on the loop
A transverse harmonic wave travels on a rope according to the following expression: y(x,t) = 0.14sin(2.7x + 17.5t), What is the average speed of the rope during one complete oscillation of the rope
Abody weight W is attached by a string of length L, to a hook on a vertical wall. A horizontal force F acting on the body holds it at a distance D from the wall. Derive the equation, which give the F in terms of W, L and D
Donald Duck and his nephews manage to sink Uncle Scrooge's yacht (m = 5021 kg), which is made of steel (? = 7770 kg/m3). How many balls are required to float the ship
A 38.0 kg box initially at rest is pushed 4.00 m along a rough, horizontal floor with a constant applied horizontal force of 125 N. determine the final speed of the box
The rectangle shown in Figure P3.57 has sides parallel to the x and y axes. Find the perimeter of the rectangle
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