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A double convex thin glass lens has equal radii of curvature. The focal length of the lens is +35.4 centimeter and the index of refraction of the glass is 1.52. Find the radius of curvature of each convex surface?
A battery has Vemf = 12.0 V and internal resistance r = 1.21. What resistance, R, can be put across the battery to extract 10.7 W of power from it?
question1a 4.7-g object moving to the right at 38 cms makes a flexible head-on collision with a 9.4-g object that is
A string is rolling several rolls about a solid sphere, and then the sphere leaved to fall from the end of the string. What is the acceleration of the center of the sphere
A block (mass = 2.4 kg) is hanging from a massless cord that is wrapped around a pulley, Find the angular acceleration of the pulley and the tension in the cord
A student m1 = 66 kilogram stands on a long cart m2 = 122 kilogram initially at rest. Find the student velocity relative to the cart in meters per second
A block with mass m =7.0 kg is hung from a vertical spring. When the mass hangs in equilibrium, the spring stretches x = 0.2 m. Where is the potential energy of the system the greatest
A turntable must spin at 33.5 rpm (3.51 rad/s) to play an old-fashioned vinyl record. How much torque must the motor deliver if the turntable is to reach its final angular speed in 1.0 revolutions, starting from rest
Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 86 kg, Determine the acceleration of the man
A 30cm string of linear density 7.0 g/m is stretched to a tension of 35N and fixed at both ends, What is the wave speed for the string
Amotorist drives along a straight road at a constant speed of 15.0m/s. Just as she passes a parked motorcycle officer, the officerstarts to accelerate at 2.00 m/s2, to overtake her. The motorist always goes at the same speed.
When a banjo string is under a tension of 200N it is tuned to a frequency of 523 Hz. find the frequency if the tension is reduced to 196N
An uncharged capacitor and a resistor are connected in series to a source of EMF. If ? = 8.43 V, C = 22.6 ?F, and R = 117 ?, find the charge on the capacitor after one time constant
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