If the binding energy of an electron in a hydrogen atom is
If the binding energy of an electron in a hydrogen atom is 6.41?10^-19 J, what wavelength of photon is required to liberate it from the atom? Planck's constant = 6.626 ? 10^-34 J×s; c = 3.00?10^8 m/s
a.1.53 mm
b. 641 nm
c. 311 nm
d. 2.18 mm
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A 332 kg piano slides 3.54 m down a 31.2° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. Calculate the net work done on the piano
The nameplate on a 50 kVA transformer shows a primary voltage of 480 V and a secondary voltage of 120 V. We wish to determine the approximate number of turns on the primary and secondary windings.
If the pH at the beginning of a titration was 4.25 and 9.60 at the equivalence point. What is the pH at the half equivalence point.
Will there ever be a single set of international rules governing multinational companies? Why? Why not? In what way are United States businesses demanding socially responsible behavior from their international suppliers? Why is this important to disc
Abraham, Inc., a New Jersey corporation, operates 57 bakeries throughout the northeastern section of the United States. In the past, its founder, James Abraham, owned all the company's outstanding common stock.
A) Explain why there is a maximum limit on the size of emitter resistor in a UJT circuit. B) Explain why there is a minimum limit on the size of emitter resistor in a UJT circuit.
A wheel with 8 spokes has a radius of 35.1 cm. It is spinning about a fixed axle at 4.15 rev/s. Assume the spokes are thin and calculate the minimum velocity required to fire a 21.5 cm arrow parallel to the axle without hitting any of the spokes.
In a particular sample, the C13 NMR spectrum showed a signal 25ppm and another signal at 72.3 ppm. if the reference frequency for C13 on the instrument were 25.1 MHz what is the difference between the frequency of each signal and the reference fre
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