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A farsighted person has a near point located 210cm from the eyes. Find the focal length of the converging lenses in a pair of contacts that can be used to read a book held 25 cm from the eyes.
A current of 0.80A flows through a copper wire 0.50mm in diameter, How long is the wire in km
The wavelength ?max at which the spectral radiancy of a cavity radiator has its maximum value for a particular temprature T is give by the Winch displacament law, or ?maxT=a constant (=2.898X10^-3 m.K). The efective surface tempratureof the sun is..
A beam of light in air is incident on the surface of a rectangular block of clear plastic (n = 1.38 ). what is its velocity inside the block
A block of mass m = 0.80 kg slides along a horizontal table with speed v0 = 9.00 m/s.How far has the spring compressed by the time
A cylinder of mass 14.0 kg rolls without slipping on a horizontal surface. At a certain instant its center of mass has a speed of 7.0 m/s. find the translational kinetic energy of its center of mass
Assuming ideal gas behavior, what would be its volume at a depth of 2500m under the ocean surface at 277K? What is the percentage increase in density of the O2?
Describe a world where the opposite of Lenz's law applies, that is where the EMF or current is in the same direction to the direction that caused it .
Two wheels can rotate freely about fixed axles through their centers. The wheels have the same mass, but one has twice the radius of the other. Compare the magnitudes of the two forces
One particle has a mass of 4.00 10-3 kg and a charge of +7 µC. A second particle has a mass of 5.00 10-3 kg and the same charge. Find the initial separation between the particles
A 2.05 kg mass is attached to a light cord that is wrapped around a pulley of radius 4.65 cm, which turns with negligible friction. Find the moment of inertia of the pulley
Two capacitors, one 12.0 μf and the other of unknown capacitance, are connected in paralel across a battery of EMF 9.0V. The total energy stored in the two capacitors is 0.0115 J. What is the unknown capacitance, C
Two point charges are on the y-axis. A 5.0 µC charge is located at y = 1.40 cm, and a -2.30 µC charge is located at y = -1.60 cm. Find the total electric potential at the origin
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