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We wish to coat flat glass (n = 1.50) with atransparent material (n = 1.25) so that reflection oflight at wavelength 474 nm is eliminated by interference. What minimum thickness can the coating have to do this?
The work function for a metal is 3.8 eV. What is the minimum photon frequency that can just eject an electron from the metal
An electric eel develops a 440V potential difference between its head and tail. What is the energy delivered by this pulse
An analog signal in the range 0 to +10V is to be digitized with a quantization error of less than 1% of full scale. What is the resolution of the conversion
The electric field phasor of an electromagnetic wave in air is given by- E(z) = y 0.750 sin( 250 π z) V/m
q1. a radio station broadcasts at a frequency of 600000 hz. know that radio waves have a speed of 3.00 x 108ms what is
An air-filled parallel plate capacitor with a plate spacing of 1.20 cm has a capacitance of 4.30, Calculate the dielectric constant of the inserted material
The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of -5.20 m/s2 for 4.05 s, making straight skid marks 61.0 m long, all the way to the tree. With what speed does the car then s..
Estimate the spacing between the two irrandiance maxima closest to the geometric of a plain wave illuminated straightedge if the source distance is 10.0 cm and the observation distance is 20.0 cm. Assume wavelength=632.8 nm.
Velocity is given by distance traveled per unit time. In the case of waves show that this leads to the velocity of the wave being equal to the product of the wavelength and the frequency.
The power needed to operate your body is about 100 {rm watts}. Suppose your body could run on fusion power and could convert a total of 0.7 of its mass into energy. How much energy would be available through fusion? Assume the mass is 70kg.
a cylindrical cable with 2.11 x 10-8 m resistivity carries a current of 1300 a. there is a potential difference of 2.0
The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.0500 kg and is moving along the x axis with a velocity of +7.08 m/s. It makes a collision with puck B, which has a mass of 0.100 kg and is initially at res..
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