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Consider an optical gain medium that has two levels at E 1=1.50 eV and E 2=3.50 eV.
a) What is the resonant absorption wavelength?
b) What is the spontaneous emission wavelength?
c) What is the stimulated emission wavelength?
d) Explain the differences between the light produced by spontaneous and stimulated emission.
Light from a helium-neon laser (? = 633 nm) passes through a circular aperture, What is the diameter (in mm) of the hole
determine the maximum height attained by the 2.1-kg mass
illuminate the object with the flashlight. One way to produce artificial gravity in a space station is to spin it.
calculate the average acceleration in m/s^2 (meter per second square), using a coordinate system with the X axis in the direction of the car's original motion and the Y axis toward the side of the road to which the car skids.
A 5g bullet leaves the muzzle of a rifle with a speed of 320 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.81 m long barrel of rifle.
The radii of curvature of the surfaces of a thin converging meniscus lens are R1= 12.0 cm and R2 = 28.0 cm, Compute the position and size of the image of an object in the form of an arrow 5.00 mm tall, perpendicular to the lens axis
A small piece of dust of mass m = 1.50g travels horizontally through an electric air cleaner in which the electric field is 498N/C. The electric force on the particle is equal to weight of the particle.
An initially motionless test car is accelerated uniformly to 1.20 × 102 km/h in 8.68 seconds before striking a simulated deer. The car is in contact with the faux fawn for 0.455 seconds, after which the car is measured to be traveling at 65.5 km/h..
Two masses of 3 kg and 5 kg collide head-on, the former moving to the right with the speed 5m/s, What amount of mechanical energy is lost
A 2.50m long pipe closed at one end, Find the number of the harmonic corresponding to this frequency
Two people stand 3 m in front of large plane mirror and space 5m a part in dark room at what angle of incidence should one of them shine a flashlight on the mirror so that reflected beam directly strickes the other person.
Two astronauts, each having a mass of 79.0 kg, are connected by a 10.5 m rope of negligible mass. Calculate the rotational energy of the system
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