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A converging lens produces a real image magnified 3 times that of an object. If the object is placed at 15 cm from the lens, calculate the focal length of the converging lens.
An object 1.40 cm high is held 3.00 cm from a person\'s cornea, Find the magnitude of the radius of curvature of the convex mirror formed by the cornea
Vector a has a magnitude of 15 units and points die east. Vector b points due south. What is the magnitude of b if a-b has a magnitude of 25 units
In a supernova, a red giant of mass 1.19*1031 kg collapses into a neutron star of mass 5.97*1030 kg
If the rms electric field of this light is 18.0N/C at a distance of 1.50m from the bulb, what is the average total power radiated by the bulb
77 N to push a box with an acceleration of 0.55 m/s2. When she increases the pushing force to 85 N, the box's acceleration changes to 0.72 m/s2. What is the mass of the box
An 845-N sled is pulled a distance of 186m. The task requires 1.2 multiplied by 104 J of work and is done by pulling on a rope with a force of 133-N. At what angle is the rope held.
An object is 22 cm in front of a diverging lens that has a focal length of -13 cm. How long in front of the lens should the object be placed so that size of its image is reduced by a factor of 4.
A spherical balloon has a radius of 12.0 m, and is filled with helium. How large a cargo can it lift, assuming that the skin and structure of the balloon have a mass of 1000 kg
Carl and Lenny are trying to find Carl's keys that are beeping-he attached a device to beep when you whistle for this purpose, how far is Lenny from the key's
A 3 kg block moves down a hill that makes a 40° angle with the horizontal direction. Ignoring friction and assuming g=10 m/s2, what is the magnitude of the acceleration of the block?
A spaceship travels with a speed of 0.3 c as it passes by the Earth on its way to a distant star, Determine its length as measured by a person on Earth
A gas system has an initial volume of 5.44L with the number of moles unknown. When the volume changes to 3980mL, What was the initial number of moles
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