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Three flat layers of transparent material are stacked upon one another. The top layer has index of refraction n1, the middle has n2 and the bottom one has n3. If n1<n2<n3, at what angle of incidence will a ray of light transverse the three layers in a single straight line.
A woman on a bicycle traveling at 10m/s on a horizontal road stops pedaling as she starts up a hill inclined at 3.0 degrees to the horizontal
You are driving north on 107th Avenue at a speed of 31.2 mph. At what frequency do you hear the siren
A 350g object on a frictionless, horizontal lab table is pushed against a spring of force constant 40.0N/cm, How fast is the object moving when it has gained half of the spring's original stored energy
A satellite is in a circular orbit 1000 km above the Earth's surface; i.e., it moves on a circular path under the influence of nothing but the Earth's gravity. Find the time it takes to complete one orbit around the Earth
A 450 N ladder rests against a smooth wall, What is the friction force on the ladder at its base
A uniform ladder is 10m long and weighs 400 N. It rests with itsupper end against a frictionless vertical wall. Its lower end rests on the ground and is preventedfrom slipping by a peg driven into the ground. The ladder makes a 30?
You throw a ball toward a wall at speed 20 m/s and at angle theta=60 degrees above the horizontal. What is the angle when it hits the wall
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.763 rev/s, Calculate the initial and final kinetic energies for this system.
A gray kangaroo can bound across level ground with each jump carrying it 8.7 from the takeoff point. What is its maximum height above the ground
The position of an object as a function of time is given by x = bt2 - ct, where b = 2.0 m/s2 and c = 6.7 m/s, What is the instantaneous velocity of the object
The viscous force on an oil drop is measured to be equal to 3.0X10^-13 N when the drop is falling through the air with a speed of 4.5X10^-4 m/s. If the radius of the drop is 2.5X10-6 m, what is the viscosity of air?
Two identical guitar strings are prepared such that they have the same length (1.91 m) and are under the same amount of tension. What is the wave propagation speed on the guitar strings
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