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A double convex lens has 10cm and 15cm as its 2 radii of curvature. The image of an object placed 30cm from the lens is formed at 20 cm from the lens on the other side.
Find the refractive index of the material of the lens.
What will be the focal length ?
What will be the focal length of the lens if it is immersed in water of RI 1.33?
Until he was in his seventies, Henri LaMothe excited audiences by belly-flopping from a height of 11 m into 70 cm of water. find the magnitude of the impulse on him from the water
A silver coin has the mass of 17.75g. If the atomic mass of silver is 107.868u, how many silver atoms are in the coin
the planet mars requires 2.35 years to orbit the sun which has a mass of 2 times 1030 kg in an almost circular
A ball is shot from the top of a building with an initial velocity of 20m/s at an angle ? = 42? above the horizontal. What are the x and y components of the initial velocity
Consider a particle of mass m contrained to lie on the surface of a cone with it's vertex pointing down and half angle alpha. write the equations of constraint
Suppose there is an astronaut who is traveling at a significant fraction of the speed of light. How long does it take according to the astronaut in years
You travel to an alien planet. The local population tries very hard to tell you what gravity is on the surface. You cannot understand them, and do not have a tool to calculate gravity directly. You also ran out of water. They offer a liquid to you, o..
Find the resonance frequency of the ear canal, Treat it as a half-open pipe of diameter 8 mm and length 26.7 mm
Suppose a photon with a wavelength of 7155 angstroms strikes ahydrogen anion, which has an electron binding energy of .75419eV.Is this sufficient to cause ejection of the electron? If so, whatwill be the kinetic energy and the deBroglie wavelength..
The magnitude of the acceleration due to gravity
question1consider a cylindrical segment of a blood vessel 1.7 cm long and 2.4 mm in diameter. what extra outward force
You want to support a sheet of fireproof paper horizontally using only a vertical upward beam of light spread uniformly over the sheet. There is no other light on this paper. The sheet measures 22.0cm by 28.0 cm and has a mass of 1.50g.
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