The E.coli bacterium is about 1.8 μm long. Suppose you want to study it using photons of that wavelength or electrons having that de Broglie wavelength.
What is the energy E photon of the photon?
What is the energy E electron of the electron?
I'm confused by this problem and I am not sure where to start?
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Basically you want to use a wavelength that's the exact same as the length of the worm,which is 2.0 micrometers.
a) Convert micrometers to meters, which should be 2.0x10^-6 meters. Plug it into the equation E=hv by replacing v(frequency) with c/wavelength, and solve for E
b) For the energy of an electron, you need to find its KE, which is 1/2mv^2. To find the velocity, use De Broglie's Equation, wavelength=h/p, and substitute p for massxvelocity. Solve for equation v=h/m(wavelength) and you should get your answer.
a) Convert micrometers to meters, which should be 2.0x10^-6 meters. Plug it into the equation E=hv by replacing v(frequency) with c/wavelength, and solve for E
b) For the energy of an electron, you need to find its KE, which is 1/2mv^2. To find the velocity, use De Broglie's Equation, wavelength=h/p, and substitute p for massxvelocity. Solve for equation v=h/m(wavelength) and you should get your answer.
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Re: Achieve #13
Autumn Jackson Dis 2A wrote:Basically you want to use a wavelength that's the exact same as the length of the worm,which is 2.0 micrometers.
a) Convert micrometers to meters, which should be 2.0x10^-6 meters. Plug it into the equation E=hv by replacing v(frequency) with c/wavelength, and solve for E
b) For the energy of an electron, you need to find its KE, which is 1/2mv^2. To find the velocity, use De Broglie's Equation, wavelength=h/p, and substitute p for massxvelocity. Solve for equation v=h/m(wavelength) and you should get your answer.
Can E = pc also be used for this?
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^^ I have the same question as Kaitlin. Why can't we use the equation E electron = pc? I used this formula and got the exact same energy as the energy for the photon, which is wrong. Why do we have to use the equation for the electron's KE?
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