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Light goes from medium a to medium b, the incidence angle is 30 and the refraction angle is 40. In which medium is the apparent speed of light higher?
A box of mass 15 kg is dragged by a 50 N horizontal force a distance of 10 m over a rough surface with the coefficient of friction = 0.14 the work done by friction force.
A thin uniform rod (mass = 0.50 kilogram) swings about an axis that passes through one end of the rod and is perpendicular to the plane of the swing. Obtain the maximum kinetic energy of the rod as it swings
A 54.5 g ice cube, initially at 0°C, is dropped into a Styrofoam cup containing 363 g of water, initially at 21.2°C. What is the final temperature of the water
A worker pushed a 38 kg block 9.0 m along a level floor at constant speed with a force directed 31° below the horizontal. Find the increase in thermal energy of the block-floor system
A weightlifter lifts 200kg from the floor to a height of 2m in 2s. How much work did the weightlifter perform
question a solenoid is designed to produce a magnetic field of 0.0270 t at its center. it has radius 1.40 cm and length
combining conservation law a 15.0kg block is attached to a very light horizontal spring of force constant 500.0nm and
A truck can move up a road having a grade of 1.0-ft rise every 50-ft with a speed of 15 mi/h. how fast will the same truck move down the hill
Calculate the angle θ that the trapeze cord
Consider a relativistic particle of mass m and kinetic energy T. Derive an expression for the particle's speed u in terms of T and m. Find the percent discrepancy for each case
a certain lcd projector contains a single thin lens. an object 23.5mm high is to be projected so that its image fills a
A box is on the back of a truck, the truck is moving at 72.0 km/h along a level road. what is least distance that the truck can stop in without the box sliding
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