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Consider an electron in an infinite potential well of width 5Å. Find the energies of first three energy levels in eV units.
What happens to the diffraction pattern as you increase or decrease the wavelength. For example, do it get more noticeable as you increase or decrease the wavel
A long uniform wooden bar with square crosssection floats on water. Show that , if the relativedensity of wood is 0.50, the bar will float with all fourfaces making an angle of 45 degrees with the water surface.
Calculate the molar mass of zinc using the data provided in the table.Zn + 2HCl -> ZnCl2 + H2
A drone, flying 300m above ground, observes a man walking on a road in a cold night (0°C). how many photons/sec does it receive from the man and from a similar surface of road
Ball 1, with a mass of 140g and traveling at 11.0m/s , collides head on with ball 2, which has a mass of 310g, What are the final velocities of each ball if the collision is perfectly inelastic
Pumped Energy Storage. A water reservoir has surface area A and depth D. The water flows down pipes and through turbines to generate electric power. The bottom of the reservoir is at height H above the turbines.
Consider the magnetic flux through a coil of wire with an area A=200cm^2 and n=100turns. If a magnetic field is increasing through the coil at a rate of 0.8 Tesla/sec, what is the induce emf around the coil?
The boxes are attached to the same string that passes over a pulley between the inclines. What is the acceleration of the system and the tension in the string.
The wavelength of an electromagnetic wave is measured to be 1.80 x 10-7 m. What is the frequency of the wave.
Does the number of significant digits change when you change SI units? Why or why not?
A rod is 2.40 m long and has a diameter of 2.50 mm. A force of 2000 N is applied to the end to stretch the rod by 1.40 mm. What is the Young's modulus for this rod
Formulate an equation to determine the average strength of the electric field on the surface of the cube that encloses a charge of -q.
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