physics

1. Calculate the frequency (Hz) and energy (eV) of green photons with wavelength of 555nm. Photon energy = hν, where ν = frequency in Hz and h = 6.626x10-34 joule-sec, the Planck’s constant. Keep in mind that: wavelengthxfrequency = speed.

2. Andy Rud!@#$%^& can serve tennis balls at 140 mile per hour. When the ball is frying at this speed, calculate the kinetic energy and express it in Joules. You would need to measure the mass of a tennis ball in grams. For your information, 1 oz. = 454 grams/16 = 28.4 grams.

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asked by JeFF
  1. If y0u are trying to cut and paste, please be advised that you will need to type your question. Cut and paste won't work for you.

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    posted by DrBob222

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