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A glass lens has a scratch-resistant plastic coating on it. The speed of light in the glass is 0.670c and the speed of light in the coating is 0.846c. A ray of light in the coating is incident on the plastic-glass boundary at an angle of 10.5° with respect to the normal. At what angle with respect to the normal is the ray transmitted into the glass?
Suppose that potons are fired towards the large flat side of a positively charged conducting plate, How long does it take for the protons to hit the plate
A student is ice fishing in Colorado on a frozen lake over spring break. Find the mass of ice cut out to make the hole
trumpet creates a sound intensity level of 1.23 x 10^2 dB at a distance of 0.80 m. What is the sound intensity of a trumpet
a scaffold of mass 56 kg and length 5.5 m is supported in a horizontal position by a vertical cable at each end. a
Using the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 9 state? What is the energy of the Hydrogen atom
Two identical resistors are connected in parallel across a 27-Vbattery, which supplies them with a total power of 6.5 W. While thebattery is still connected, one of the resistors is heated so thatits resistance doubles.
a standing wave oscillating on a string at frequency f_0. How many antinodes will there be if the frequency is increased to 3f_0
What would be the equilibrium temperature when a 270 g block of copper at 300°C is placed in a 150 g aluminum calorimeter cup containing 820 g of water at 12.0°C.
A 52kg ballet dancer stands on her toes during a performance with four square inches (26cm2) in contact with the floor. What is the pressure exerted by floor over the area of contact in some cases.
in what way is the npv consistent with the principle of shareholder wealth maximization? what happens to the value of a
Somewhere between the Earth and the moon, gravity from these two bodies on the space pod would cancel. Is this location nearer the Earth, the moon, or in the middle (having the same distance between) of the earth and the moon.
Two resistors of resistance R are connected in parallel. The combination is connected in series to a resistor of resistance 2R. What is the resistance of this combination of resistors
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