Hydrogen atoms in a high-voltage discharge tube
A wavelength of 486.2 nm is emitted by the hydrogen atoms in a high-voltage discharge tube. What are the (a) initial and (b) final values of the quantum number n for the energy level transition that produces this wavelength?
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A parallel-plate capacitor is formed from two 9.10cm x 9.10cm electrodes spaced 2.00mm apart. The electric field strength inside the capacitor is 5.00*10^6 . What is the charge (in nC) on each electrode?
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A flat (unbanked) curve on a highway has a radius of 220.0 m. A car rounds the curve at a speed of 25.0 m/s. (a) What is the minimum coefficient of friction that will prevent sliding?
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