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The following is a standard problem found in many textbooks:
Problem: Using a mixture of CO2, N2, and sometimes He, CO2 lasers emit a wavelength of 10.5 µm. At power outputs of 0.110 kW, such lasers are used for surgery.
A- How many photons per second does a CO2 laser deliver to the tissue during its use in an operation?
Show all work, use additional paper if necessary.
A nearsighted person has a far point that is 323 cm from the eye. if the lens in a pair of glasses os 2cm in front of this person's eye, what focal length must it have
what resistance would have to be connected in series with a 3V lamp in a 28 V circuit when the operating current of the lamp is .5 A
A charge +q is located at the origin, while an identical charge is located on the x axis at x = +0.50 m, Where should the third charge be located
Find out separation between the two sources
a car is accelerating while its horn is sounding. just after the car passes a stationary person the person hears a
Assume the masses of the chains, pulleys, and ropes are negligible. Determine the force F required to lift the crate with constant speed. Identify the tension in the upper chain.
In the treatment of spine injuries, it is often necessary to provide some tension along the spinal column to stretch the backbone. find the tension in each of the cables attached to this neck collar
A golfball rolls off a horizontal cliff with an initialspeed of 11.4 m/s. The ball falls a vertical distance of 15.5m intoa lake below. How much time does the ball spend in the air
Five moles of an ideal gas expand isothermally at 100 degrees Celsius to five times its initial volume. Find the heat flow into the system.
A satellite circles the earth in an orbit whose radius is 11 times the earth's radius. Estimate the period of the satellite
a proton is initially at rest at a point where the potential is 471 v. some time later the proton is at a point where
A 10 kg object is moving at 6.36 m/s. The object passes 3m over rough surface with a frictional force of 20 N. How far does the object compress the spring
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