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The maximum angular magnification of a magnifying glass is 12.0 when a person uses it who has a near point that is 25.0 cm from his eyes. The same person finds that a microscope, using this magnifying glass as the eyepiece, has an angular magnification of -525. The separation between the eyepiece and the objective of the microscope is 23.0 cm. Obtain the focal length of the objective.
A jet aircraft flies over you in straight, level flight at a steady speed. The whine of the engine is audible to you. While the plane is approaching, you gauge the engine whin
You are working out on a rowing machine. Each time you pull the rowing bar (which simulates the "oars") toward you, Find the magnitude of the force that you exert on the handl
The Black Hole in the Center of the Milky Way Recent measurements show that the black hole at the center of the Milky Way galaxy, which is believed to coincide with the powerf
The attached video clip shows footage from Skylab, launched in 1973, used during 1973-74, and in orbit until 1979. Determine the speed that he should maintain, in order to fee
You are to drive to an interview in another town, at a distance of 300 km on an expressway. The interview is at 11:15 a.m. You plan to drive at 100 km/h, so you leave at 8:0
A laser shines on a pair of vertical slits. Given the measurements shown in the figure, calculate the wavelength of the light. (The illustration is not to scale. Note that t
Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by transmission lines. Estimate the mag
A proton is initially at rest at a point where the potential is 507V. Sometime later the proton is at a point where the potential is 187V. If no force other than the electro
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