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An object placed 35 cm away from a lens projects a real image equal to 55 cm behind the lens. What is the focal distance of the lens?
For the example above, what is the magnification of the lens? Not exactly sure what equation to use. Please help, I will rate the best and clearest answer.
a hiker throws a stone from the upper edge of a vertical cliff. the stones initial velocity is 25ms directed at 40
a soccer player kicks the ball toward a goal that is 27.0 m in front of him. the ball leaves his foot at a speed of
A projectile is fired at 60.0 o above the horizontal. Its initial speed is equal to 150.0 m/s. Like most problems in this class (2010), ignore the effects of air unless told otherwise
An object has a kinetic energy of 275 J and a momentum of magnitude 25.0 kg * m/s. Find the speed and mass of the object
two tiny conducting spheres are identical and carry charges of -18.2 microc and 53.0 microc. they are separated by a
An ac generator has a frequency of 4.80 kHz and produces a currentof 0.0400 A in a series circuit that contains only a 232-Ω resistor and a 0.250-µF capacitor. Obtain the voltage of the generator.
a worker pushes a 20 kg crate straight across a 1 m long section of horizontal floor with a constant horizontal force
An isolated capacitor of unknown capacitance has been charged to apotential difference of 125 V. When thecharged capacitor is disconnected from the battery and thenconnected in parallel to an uncharged 10.0 µF capacitor, the voltage across the com..
A photon of wavelength .1 nm scatters from a free electron at rest. Find the wavelength of the scattered photon
What special situation will occur when an integer number of half wavelengths of a vibrating string equal the length of the string between two boundaries
An engine removes 300 J from a reservoir at 290 K and exhausts 250 J to a reservoir at 200 K. What is its efficiency? How much more work could be done if the engine were reversible?
Two concentric metallic spheres of radii r1 and r2> r1, respectively, are maintained at temperatures T1 and T2, and are separated by a layer of homogeneous material thermal conductivity k.
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