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The radii of curvature of a bioconex lens are 30cm and 20cm. Calculate the longitudinal chromatic aberration for an object placed at infinity, given the refractive indices as Uv = 1.523 and Ut = 1.514.
A block by mass M stays at rest in an incline surface without friction. It's attached by a string to a wall. What is the magnitude of tension T of the string?
A rocket is accelerated to speed 45300 m/s near Earth'ssurface (where Earth's radius is Re= 6370 km.), and it then coasts upward. Find the ratio of its speedto the escape speed on Earth
A truck can move up a road having a grade of 1.0-ft rise every 50-ft with a speed of 15 mi/h. The resisting force is equal to one twenty-fifth the weight of the truck. If its power output is the same, how fast will the same truck move down the hill? ..
A moving particle encounters an external electric field that decreases its kinetic energy from 9910 eV to 6840 eV as the particle moves from position A to position B. Determine the charge of the particle
A hoop (I = MR^2) of mass 2.0 kg and radius 0.50 m is rolling at a center-of-mass speed of 15 m/s. What is the new speed of the center of mass of the hoop?
Many lamps have a switch that lets you choose three levels of brightness. The bulbs in this type of lamp have not one but two filaments inside, which are wired in parallel and have their own switches.
Two lenses are placed 30 cm apart. The first lens has a focal length of +20 cm, and the second lens has a focal length of -10cm. If an object is placed 100 cm in front of the first lens, where is the final image located? Give your answer in relation ..
Suppose that you wish to mold a uniform wire from 1.50 g of copper. The wire needs to have a resistance of 0.0400 ohm's, What should be the diameter fo the wire?
A chest x ray uses 14 keV photons. A 65 kg person receives a 35 mrem dose from one x ray that exposes 25% of the patient's body
Suppose you look at a 190-cm-tall friend who is standing 7.0m in front of you. Assuming your eye functions like a pinhole camera, what will be the height, in mm, of your friend's image on your retina?
A closed system is observed to have 17 objects in it. Initially, the total energy of the system is 4714 J. After 1.7 h have passed, how much total energy will the system contain
In a marathon race Chad is out in front, running due north at a speed of 3.88 m/s. John is 97 m behind him, How long does it take for John to pass Chad
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