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A lens has a focal length of 40 mm magnifier. An object viewed with the magnifier is 5.3 mm tall and at the focal point. The magnifier has a near point of 25 cm. What is the angular magnification of the magnifier?
A chair of weight 125 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 35.0 N directed at an angle of 42.0 below the horizontal and the chair slides along the floor. Using Newton's laws, compute..
How long does it take for the grinding wheel to stop ? Through how many radians has the wheel turned during the interval found in.
A student ate a Thanksgiving dinner that totaled 3000Cal . He wants to use up all that energy by lifting a 30-kg mass a distance of 1.0 m. How many times must he lift the mass
When chasing a hare along a flat stretch of ground, a greyhound leaps into the air at a speed of 14.0 m/s, at an angle of 30.0° above the horizontal. What is the range of his leap
A 59.00kg skier encounters a dip in the snow's surface that has a circular cross section with a radius of curvature of 12-m. If the skier's speed at point A is 7.0 m/s, what is the normal force exerted by the snow on the skier at point B? Ignore f..
A high-pressure gas cylinder contains 50.0 L of toxic gas at a pressure of 1.80 ? 107 N/m2 and a temperature of 23.0°C. What is the final pressure if one-tenth of the gas escapes
Galileo dropped a ball from the tower of Pisa. The ball hit the ground in 3 seconds. what was the speed on striking the ground
How several 90-rm W, 120-rm V light bulbs can be connected to a 20-rm A, 120-rm V circuit without tripping the circuit breaker.
A swimming pool has dimensions 26.0 m â?? 9.0 m and a flat bottom. The pool is filled to a depth of 1.70 m with fresh water. What is the force exerted by the water on each side
at what angle to the vertical does the boy throw the can. What is the period of our orbital motion about the center of Galaxy in Earth years.
A uniform circular ring of charge Q= 7.30 microCoulombs and radius R= 1.10 cm is located in the x-y plane, centered on the origin. What is the magnitude of electric field E at point P, located at z= 2.80 cm.
A car rounds a 1.15 radius circular track at 82 Find the magnitude of the car's average acceleration
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