Finding out the focal length of the lens
A contact lens is made of plastic with an index of refraction of 1.58. The lens has an outer radius of curvature of +2.03 cm and an inner radius of curvature of +2.42 cm. What is the focal length of the lens?
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Halley's comet has a period of approximately 76 years, and it moves in an elliptical orbit in which its distance from the Sun at closest approach is a small fraction of its maximum distance. Estimate the comet's maximum distance from the Sun in as
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The top of a swimming pool is at ground level. If the pool is 2.28 m deep, how far below ground level does the bottom of the pool appear to be located for the following conditions?
A subway train is being designed for operation between two stations A and B, which are 2 km apart. Determine the minimum time for the train to make the trip from A to B.
Nineteen customers have placed service calls to obtain AT&T U-Verse. The maintenance technician can only service ten of them before noon. The customers care about the order in which they are serviced, so each possible arrangement of service ca
Determine the natural frequency of this torsional system if the pulley is secured to the shaft at a distance L1 from one support and L2 from another.
Customers come to a store as a Poisson process with rate 12 per hour. Compute the probability of three customers arriving within the first 12 minutes?
The magnification of the final image produced by this lens combination. the object is 10 cm in front of the first lens. And note that I'm asking about the final image, not the intermediate image.
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