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Compute the energy level vales such that lasing population inversion occurs between n=2 and n=3 energy level of the lyman series.b) determine the absorption wavelength and the lasing wavelength
Children are playing on a vertical slide that is 10m high. If humps were added to this slide, but the height remained constant, how would this effect the final speed
Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1600 kg and was approaching at 7.00 m/s due south. Calculate the final velocity of the cars
On October 9, 1992, a 27-pound meteorite struck a car in Peekskill, NY, leaving a dent 22 deep in the trunk. what was the magnitude of its deceleration
A 8.50-kg block of ice, released from rest at the top of a 1.41--long frictionless ramp, slides downhill, reaching a speed of 2.71 at the bottom. What is the angle between the ramp and the horizontal
What is the magnitude of the electric field at this point?
A thundercloud similar to the one described in Example 24.3 produces a lightning bolt that strikes a radio tower. find the effective resistance of the air during the lightning strike
Consider a parallel plate capacitor with an area of 2 cm^2 and a plate separation of 0.02 mm which is charged to a voltage of 2 kV. The work function for the electrons in the plate is 3.8 eV. Compare the electron tunneling current when there is a vac..
A 1250 kg car is moving at 23.2 m/s. Then, 323 kJ of work is done on the car to increase its speed. What will be the car's new speed
Two rockets approach earth from opposite directions at equal speeds relative to the earth. How fast are the rockets moving with respect to the earth
The position vector,r, in meters, of a particle moving in the x-y plane, is giving by the following equation: r=i(2t^2-8t-12)+j(2t^3-18t^2+48t+25), find the direction of the velocity vector at the instant
An ideal gas occupies a volume of 2.85 m3 at STP. The pressure of the gas in increased to 3.71 atm. Calculate the new volume of the gas
Two sinusoidal waves of the same period, with amplitudes of 4.0 and 6.0 mm, travel in the same direction along a stretched string; they produce a resultant wave with an amplitude of 9.225 mm. The phase constant of the 4.0 mm wave is 0. What is the..
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