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A convex mirror has a radius of curvature whose magnitude is 47 cm. The mirror is positioned on a horizontal optical bench with its front surface at 0 cm. A 6.0 cm long fluorescent lamp oriented vertically is placed at +103 cm. What is the focal length of the mirror?
At what distance from the mirror can we find a sharp image of the lamp?
How tall is the image of the lamp?
If the convex mirror were replaced by a plane mirror and the lamp moved to 212 cm from the plane mirror, how tall would the image be?
A ball having a mass of 2 kilograms, starting at ground level, is shot straight up into the air. What is the ball's Total Energy at these same three points in its flight
Neptunium In the fall of 2002, a group of scientists at Los Alamos National Laboratory determined that the critical mass of neptuniwn-237 is about 60 kg. The critical mass of a fissionable material is the minimum amount that must be brought togeth..
Calculate the force a piano tuner applies to stretch a steel piano wire 7.70 mm, if the wire is originally 0.850 mm in diameter and 1.30 m long
a 9.05 kg monkey is hanging by one arm from a branch and swinging on a vertical circle. as an approximation assume that
Two different grades of iron are used. When a coil having 2000 turns is wound on part B, and a current of 0.5A is applied to it, the relative permeability of part A is measured as 500, and of part B as 1000. Calculate the Reluctance of part A
A horizontal wire of length 0.43 m, carrying a current of 6.9 A, is placed in a uniform external magnetic field. Determine the magnitude of the external magnetic field
In which scenario do you experience the larges acceleration? Explain why using physical principles you have learned.
A coil is connected in series with a 10.0k? resistor. A 50.0 V battery is applied across the two devices, How much energy is stored in the coil at the same moment
A grade school student plans to build a 34-power telescope as a science fair project. What focal length is needed for her objective lens
A waiter holds two plates of food in one hand. Hiss forearm has a mass of 2.2 kg and the center of mass of his forearm is located 13 cm from his elbow joint. find the torque produced by the mass of the two plates
how long does it take the sun to melt a block of ice at 0 with a flat horizontal area 1.0 and thickness 2.0 ? assume
A hare and a tortoise compete in a race over a straight course 2.10 km long. The tortoise crawls at a speed of 0.180 m/s toward the finish line. For how long in time was the hare stationary
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