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Electron spin resonance is much like nuclear magnetic resonance except that electronic transitions are excited between atomic Zeeman levels. These experiments are done at microwave frequencies. If the electromagnetic wave has a frequency of 32 KMHz (K band) calculate the fractional difference in population between two atomic Zeeman levels
(a) at room temperature and
(b) at 4°K.
Two 1.50 V batteries -- with their positive terminals in the same direction -- are inserted in series into the barrel of a flashlight. One battery has an internal resistance of 0.350 , the other an internal resistance of 0.170 . When the switch is..
What is the term for the process that returns moisture to the air from the Earth's surface? What is the term for the process that returns water to the surface from the air? What is an aquifer? How common are aquifers in the United States?
A telescope can be used to enlarge the diameter of a laser beam and limit diffraction spreading. what is the minimum angular spread of the beam
Air at 90 kpa and -10 C enters an adiabatic diffuser steadily with a velocity of 180 m/s and leaves with a low velocity at a pressure of 100 kpa. The exit area of the diffuser is 4 times the inlet area. Determine (a) the exit temperature and (b) the ..
Find (a) the ratio M/m; (b) the velocity of centre of mass; (c) the total kinetic energy of the two particles in the centre of mass; and (d) the final kinetic energy of m in the laboratory system.
After the Sun exhausts its nuclear fuel, its ultimate fate may be to collapse to a white dwarf state. Calculate the average density of the white dwarf
In an emergency stop to avoid an accident, a shoulder strap seat belt holds a 60 kilogram passenger in place. find what was the average force applied to the passenger by the seatbelt
A catapult with a radial arm 4.19 m long accelerates a ball of mass 19.1 kg through a quarter circle. The ball leaves the apparatus at 41.6 m/s. Find the moment of inertia of the arm and ball
question an office window has dimensions 3.4 m by 1.7 m. as a result of the passage of a storm the outside air pressure
Determine the average speed for the trip
An iron rod is heated by a welder's torch. Initially it glows a dull red, then a brighter orange, and finally very bright white. Discuss this sequence in terms of black-body radiation.
Determine the inductance of a solenoid with 670 turns in a length of 30cm . The circular cross section of the solenoid has a radius of 5.0cm .
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