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A layer of oil, with a refractive index of 1.40798, 1.05618 millimeter thick, floats on water.
(a) Light of vacuum wavelength 632.800 nanometer, emitted by a stabilized He-Ne laser is reflected at normal incidence by the oil. Obtain how many wavelengths are contained in the light wave passing back and forth through the oil?
You have fabricated a one-dimensional well of width 12nm, and measurements show that the energy difference between the ground state and the first excited state is 0.16eV. What is the effective mass of the electrons
A concrete highway is built of slabs 14m long (20 degrees Celsius). How wide should the expansion cracks between the slabs be
A motorcycle with a mass of 200 kg can accelerate from 0 to 30m/s in 3 seconds. Assuming all of the force generated with the engine goes into acceleration of the motorcycle , how much force is the engine producing? Show your work.
transverse pulses travel with a speed of 200 ms along a taut copper wire whose diameter is 1.50 mm. what is the tension
A uniform bar of length 18 m and mass 1 kg is attached to a wall with a hinge that exerts a horizontal force Hx and a vertical force Hy on the bar. find the magnitude of the horizontal force Hx on the pivot
A ball is thrown with a speed of 15 m/s at a 78 degree angle. will it make it over a 10 m wall? How far from the wall does the ball need to be thrown
the plates of a spherical capacitor have radii 31.0 mm and 32.0 mm. a calculate the capacitance in picofarads. b what
A tennis ball of mass m = 60.0 g and speed v = 25.0 m/s strikes a wall at a 45º angle and rebounds with the same speed at 45º
An object of unknown mass is attached to an ideal spring with force constant 150N/m and is found to vibrate with a frequency of 6.00Hz. Find the mass of this object
A transformer with 120. turns in its secondary supplies 12. volts at 220. ma to a toy train. The primary is connected across a 120. V wall outlet. What power is delivered by the wall outlet
The water system in a town is designed by a careless engineer. He places the new water tower at the top of an extremely tall hill, Calculate the minimum height of the water level in the tower
A 1.0 cm wide diffraction grating has 1000 slits. It is illuminated by light of wavelength 550 nm. What are the angles of the first two diffraction orders
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