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In the diving pool in the Richards Building, there is a glass window under the water. There is a room full of air on the other side of the glass window pane. If I dive under the water and look at the window, I notice that I can see the room on the other side of the window only through a certain area. Outside that circle, light undergoes total internal reflection at the surface between the glass and the air, and the window appears like a mirror. If I am 1.01 m from the window, find the radius of the circle. The index of refraction of water is 1.33, and the index of refraction of glass is 1.52. Be sure to take into account that the light ray which is refracted at the glass-air surface is also refracted at the glass-water surface and changes direction there too.
Flying due east, the plane flies with the rotation of the Earth, while flying due west, it flies against the rotation. Will the flight times be the same? Different? Why?
A person pulls on a 50kg desk with a 200 N force acting at a 30 degree angle above the horizontal. The desk does not budge.
A) What is the Boiling Point (Temperature) of Water?
A gymnast with mass m1 = 40 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 110 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
An 8.50kg point mass and a 15.0kg point mass are held in place 50.0 cm apart. Find the direction of the acceleration of the particle
The Stanford Linear Accelerator can accelerate electrons to energies of 50 GeV. What is their de Broglie wavelength? Recalling that waves can only probe structure as small as their wavelength divided by 2, what fraction of a proton’s diameter (d = 2 ..
The diodes are oppositely oriented, so that when one diode is forward-biased, the other is back-biased. Which phrase best describes the current in the circuit.
Write down a function named as kineticEnergy() which determines the kinetic energy of an object in accordance with the following formula.
A pressure gage located 1 m off the bottom in 10 m depth of water measures an average maximum pressure of 10 N/cm2 having an average period of 9 sec
A cargo plane is flying horizontally at an altitude of 20.0 km with a speed of 888 km/h when a large crate falls out of the rear loading ramp. How far is the crate from the aircraft when the crate hits the ground
A package is dropped out of a helicopter, which is moving upward at 10m/s at a constant rate. how high above the ground was the package when it was dropped
Passengers riding in the Great Six Flags Air Racer are spun around a tall steel tower (see the figure). Calculate the speed of the planes
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