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A Hydrogen atom exists in an excited state for typically around 10 nanoseconds. How many revolutions would Bohr's theory suggest that an electron would make in an n = 2 state before decaying?
If a star has a peak emission in the infrared par of the spectrum, is it hotter or cooler than the Sun? What color would the star be
A proton with kinetic energy of 2.30 × 106 eV is fired perpendicular to the face of a large plate that has a uniform charge density, From what distance should the proton be fired so that it stops right at the surface of the plate
A football is thrown with an initial upward velocity component of 15.0 and a horizontal velocity component of 17.5 . How high does it get above the ground? How far has the football traveled horizontally from its original position?
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at60.0m/s and returns the shot with the ball traveling horizontally at34.0m/s in the opposite direction. What work does the racquet do on the ball
The currents in household wiring and power lines alternate at a frequency of 60.0 Hz. What is the wavelength of the EM waves emitted by the wiring
let me ask you a vhdl concept question.see the code below.xyzlt not xyzwill this be synthesized into a flip flop? what
A stone is dropped from the top of the cliff. The splash it makes when striking the water below is heard 3.5 seconds after it is dropped. How high is the cliff? Presume that the speed of sound in air is 343 m/s and g = 9.8 m/s2.
Suppose a 100m diameter stony (p= 3 g/cm^3) meteroid impacts the Earth with a speed of 20km/s. Assume all kinetic energy goes into the creation of an atmospheric blast wave.
in many locations such as lake washington in seattle floating bridges are preferable to conventional bridges. such a
A steel wire in a piano has a length of 0.8000 m and a mass of 3.900 10-3 kg. To what tension must this wire be stretched so that the fundamental vibration corresponds to middle C (fC = 261.6 Hz on the chromatic musical scale)?
One mole of gas obeys van der waal's equation of state and allowed to expand isothermally from v1 to v2. Derive equation for the change in Gibbs free energy for such expansion.
In a real or imaginary nucleus of 51 x ^108, how many protons are in the nucleus and how many neutrons are in the nucleus
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