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A very thin sheet of glass (n=1.5) floats on the surface of water (n=1.33). When illuminated with white light at normal incidence, the reflected light consists predominantly of wavelengths 400nm and 560nm.
What is the thickness of the glass?
What wavelengths would be visible if a thin layer of water of the same thickness were spread out on top of a thick piece of glass?
A spring of constant 3.00 x 10^4 N/m is between a rigid beam and the output piston of a hydraulic lever. An empty container with negligible mass sits on the input piston. The input piston has Areai and output piston has area 18 A.
A weather balloon filled with helium gas has a volume of 279 m3, What is the new volume of the balloon
Consider two capacitors in air each with a capacitance C, both capacitors then were filled with liquid having a dielectric constant k, What is produced heat
A physics student has designed a winter game. He has a platform 4.6 meters high with a rope tied to a tree at the same height, how fast are the boys and the sled moving after they "collide"
Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 10 s, it rotates 2 revolutions. What was the angular acceleration during this time
A hawk flies in a horizontal arc of radius 12 m at a speed of 4 m/s, and increases its speed at the rate of 1.20 m/s2. Find the acceleration (and direction) under these conditions.
A spring is oscillating with a frequency of 1.7Hz. 3.9 seconds after the spring is released it is -20cm from equilibrium. Find the amplitude of the spring
A 300 kg elevator is being pulled upwards by a steel cable at a constant velocity. What is the net force on the elevator
The velocity of the car at the end of the fifteen-second period is +20.6 m/s. The ratio of the average acceleration values is a1/a2 = 1.50. Find out the velocity of the car at the end of the initial ten-second interval.
An electric dipole with dipole moment P=(3.24 i + 4.30 j)(1.56 x 10^-30 C*m) is in an electric field E=(4055 N/C) i, What is the potential energy of the electric dipole
White light containing wavelengths from 400 nm to 750 nm falls on a grating with 7000 lines/cm. How wide is the first-order spectrum on a screen 2.10 m away.
find the initial velocity of the ball. An echo is heard in 3 sec after the emission of sound. If speed of sound in air is 342 m/s, what is the distance of the reflecting surface from the source.
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