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A 1.0-cm-thick layer of water stands on a horizontal slab of glass. Light from within the glass is incident on the glass-water boundary. What is the maximum angle of incidence for which a light ray can emerge into the air above the water?
A dog with a mass of 20 kg is sitting on a board with a mass of 5 kg. The board is on ice and is free to slide without friction. What is the resultant velocity of the board
A tensile specimen has a 10mm minimum diameter and a 50mm guage lenght. The stress and strain follow a linear behaivour before the applied load reaches 8 x 10^4 N, what is the young modulus for this material
Two long parallel wires are 6cm apart and carry currents of 3 and 9amps resepctively in opposite directions
A student sits at rest on a piano stool that can rotate without friction. The moment of intertia of the student-stool system is 4.1 kg*m^2. What is the resulting angular speed of the student
Two trains are traveling towards each other on parallel tracks that run diagonally Northeast to Southwest and vice versa. train A (proper length L) travels southwest to northeast and train B (proper length 2L) travels northeast to southwest.
You are a professional frontier re-enactor who specializes in making lead shot. How much energy is required to cool a single droplet of molten lead all the way down to 0 C
A pilot wishes to fly due east. If the planes maximum speed is 683 km/hr and there is a 21.4 km/hr wind from the north, what must the planes velocity be in order to fly due east
During a rain storm, rain comes straight down with a velocity Vi = -15 m/s, find the average force exerted by the rain on the roof during a 3 second time interval
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1020 Hz. The bird-watcher, however, hears a frequency of 1060 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
Having captured a mouse, an owl is flying towards the barn where it lives to enjoy dinner. How much times passes before the mouse hits the ground
You are piloting a spacecraft whose total mass is 1170 kg and attempting to dock with a space station in deep space. How long should you sustain the firing of the retro-rocket
High-speed photos of a 200%u03BCg flea jumping vertically show that the jump lasts 1.5ms, What average force does the ground exert on the flea during its jump
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