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Problem: A ray of light is incident on a flat surface of a block of diamond that is surrounded by water. The angle of refraction is 11.2°.
Part I: Find the angle of reflection.
Rework your solution from the beginning and check each step carefully.
a a particle with energy of 1 ev approaches an energy barrier with height 1.5 ev. if the barrier height is slowly
Nitrogen forms hydrides. One of them, A, is acidic and contains 2.3% of hydrogen. Another, B, is a base containing 87.5% of nitrogen. In what molar ratio do they combine if it is known that the salt formed by their combination contains 6.7% hydrogen?
A gamma-ray telescope intercepts a pulse of gamma radiation from a magnetar, a kind of star with a spectacularly large magnetic field. The pulse lasts 0.16 s and delivers 9.5 x10 -6 J of energy vertically to the 59-m 2 surface area of the telescope..
A girl walks 26 meters at an angle of 39° west of south. How far west of her starting point is she
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An astronaut at rest on Earth has a heartbeat rate of 73 beats/min. When the astronaut is traveling in a spaceship at 0.87c, what will this rate be as measured by the following: (a) an observer also in the ship beats/min (b) an observer at rest on Ea..
A spacecraft has a nonrelativistic (or classical) momentum whose magnitude is 1.8×1014 kg·m/s. Find the relativistic momentum of the spacecraft
A physics professor is pushed up a ramp inclined upward at an angle 35.0^\circ above the horizontal as he sits in his desk chair that slides on frictionless rollers. The combined mass of the professor and chair is 84.0kg . He is pushed a distance ..
A patient in therapy has a forearm that weighs 20.5N and lifts a 112.0N. The only other significant force on his forearm come from the biceps muscles (which acts perpendicularly to the forearm) and the forces at the elbow. If the biceps produce a ..
In a church choir loft, two parallel walls are 5.88 m apart. The singers stand against the north wall. The organist faces the south wall, sitting 0.619 m away from it. So that she can see the choir, a flat mirror 1.147 m wide is mounted in the south ..
The rms current in an RL circuit is 0.28 A when it is connected to an ac generator with a frequency of 60.0 Hz and an rms voltage of 25 V. (a) Given that the inductor has an inductance of 170 mH, what is the resistance of the resistor? ? (b) Find the..
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