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What is the minimum frequency of light needed to free an electron from a neon nucleus when the electron is in its lowest energy level n=1? What frequency is emitted by an electron that falls from the n=7 to the n=2 energy level of a neon nucleus?
In open heart surgery a much smaller amount of energy will defibrillate the heart, What voltage is applied to the 9.00 µF capacitor of a heart defibrillator that stores 55.0 J of energy
A cylinder contains a mixture of helium and argon gas in equilibrium at a temperature of 151? C. Boltzmann's constant is 1.38066 × 10?23 J/K, What is the rms speed of argon
ball rolls horizontally off the edge of a tabletop that is 1.80 m high. It strikes the floor at a point 1.32 m horizontally away from the table edge. (Neglect air resistance.) (a) How long was the ball in the air? s (b) What was its speed at the i..
A 42 kg pole vaulter running at 11 m/s vaults over the bar. Her speed while she is above the bar is 0.7 m/s. Avoid air resistance, as well as any energy absorbed by pole, and determine her altitude as she crosses the bar.
The focal length of an objective lens is 4.60mm . The image formed by this lens is 145mm from its focal point. find the magnitude of the angular magnification of the microscope
Two identical small insulating balls are suspended by separate 0.22-m threads that are attached to a common point on the ceiling. Determine the tension in the threads
how long does it take the boat to make a round trip consisting.
A 52-kg pole vaulter running at 13 m/s vaults over the bar. Her speed when she is above the bar is 1.0 m/s, determine her altitude as she crosses the bar
Sketch a principle ray diagram showing the formation of the image. compute the position, size, orientation (erect or inverted), and nature (real or virtual) of the image.
The Hoover Dam is 220 meters high and the pressure at the bottom of the dam is 2.2 million Pascals. What is the pressure at 55 meters from the surface in million Pascals
During the current year it reported net income of $875,000. It had cash provided by operating activities of $734,000, paid cash dividends of $70,000, and had capital expenditures of $280,000. Calculate the company's free cash flow.
A ship sets sail from Rotterdam, The Netherlands, heading due north at 5.00 m/s relative to the water. What is the velocity of the ship
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