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During a boring banquet you notice that the fat swimming on top of your soup is reflecting back green, which you remember to be about 550 nm in wavelength. Carefully observing the refraction angles of your submerged spoon, you figure out that the index of refraction of the soup is 1.34, while the index of refraction of the fat is 1.43. What is the smallest possible thickness of the fat layer on top of your soup?
a wire is carrying a current in the -x direction. What is the direction of the uniform magnetic field such that the magnetic force is maximized
A simple generator has a coil with area A=0.02m2, which is rotated at frequency f=60Hz (remember that angular frequency is 2*pi*f) in a B=0.5T magnetic field. How many windings (number of turns N) are needed if the generator is to develop an avera..
A bat at rest sends out ultrasonic sound waves at 46.9kHz, What is the received sound frequency
a runner hopes to complete the 10000-m run in less than 30.0 min . after running at constant speed for exactly 27.0 min
A 0.361 T magnetic field in a mass spectrometer causes an isotope of sodium to move in a circular path with a radius of 0.077m. what is the isotope's mass
the drawing shows an electron entering the lower left side of a parallel plate capacitor and exiting at the upper right
A generator of frequency 2500 Hzdrives a series RLC circuit with an emf amplitude of 120V. The resistance is 3.1 , the capacitance is1.60 µF, What is the current amplitude
The potential at location A is 481 V. A positively charged particle is released there from rest and arrives at location B with a speed vB. The potential at location C is 878 V, and when released from rest from this spot, the particle arrives at B wit..
When a converging lens is used in a camera (as in the top figure), the film must be at a distance of 0.210 m from the lens to record an image of an object that is 4.00 m from the lens. How far from the projector lens should the film be placed
If two successive overtones of a vibrating string are 280 Hzand 350 Hz, what is the frequency of the fundamental
Two billiard balls have velocities of 1.50 m/s and -1.0 m/swhen they meet in an elastic head-on collision. What is the final velocity of the first ball after collision
Any change of the energy of a system occurs because of
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