Light from a he-ne laser 632.8 strikes a pair of slits at, Ask an Expert

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Q1. The density of gold is 1.93×104 {rm{kg/m}}^{rm{3}}. 203 {rm g} of gold is shaped into a cube. What is the length of each edge?

Q2. Light from a He-Ne laser (= 632.8) strikes a pair of slits at normal incidence, forming a double-slit interference pattern on a screen located 1.10 from the slits. The figure shows the interference pattern observed on the screen.

Q3. Calculate the de broglie wavelength of a 0.50 kg ball moving with a constant velocity of 26 m/s (about 60 mi/h)

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