One major difference between Young's double slit interference experiment with light and Jonsson's similar experiment with electrons is that

A. the electrons exhibited an interference pattern only characteristic of particles and the light exhibited an interference pattern only characteristic of waves.
B. the light must be at low intensity to produce the interference pattern while the electrons could be propelled onto the slits at very high frequency and still produce the pattern.
C.the wavelengths of the electrons were much smaller than that of light and therefore the slits for the electron experiment were much more difficult to produce.
D. For the electrons, the slit widths could be larger than for those of photons because of the electrons' larger momenta.

C.
It was no small feat of Jonsson to produce the slits for the 50-keV electrons. At 0.005 nm, the slits for electrons are significantly smaller than those for photons.

Physics & Space Science

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A 4.0-mF capacitor initially charged to 50 V and a 6.0-mF capacitor charged to 30 V are connected to each other with the positive plate of each connected to the negative plate of the other. What is the final charge on the 6.0-mF capacitor?

a. 20 mC b. 8.0 mC c. 10 mC d. 12 mC e. 230 mC

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A mass is attached to a vertical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is a minimum?

A) midway between A or B B) at either A or B C) one-fourth of the way between A and B

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