In the hydrogen atom the orbit of the electron around the proton can be treated

Question

In the hydrogen atom the orbit of the electron around the proton can be treated as circular motion at constant radius r = 0.528 A. Given that the electron velocity is v =2.2 x 10^6 m/s, calculate the frequency of its orbital motion. Choose from the answers provided below a) 2.8 GHz b) 16 MHz c) 6.64 x10^15 Hz d) 3.2 x 10^20 Hz 4) A glider with mass m = 0.5 kg is attached to a horizontal spring, with its left end fixed, as shown below in Fig.-XX Assume that there is zero friction between the glider and its track. The mass is set into simple harmonic motion, by 12 N force, which displaces it by 0.02 in to the right. Calculate the spring constant K the angular frequency, the frequency, and the period of the oscillator. m = 0.50 kg a) 100 N/m. 22 rad/sec, 3.5 Hz, 0.29 sec; b) 320 N/m, 25.3 rad/sec, 4.03 Hz. 0.248 sec, c) 430 N/m, 29.33 rad/sec, 4.67 Hz, 0.214 sec, or d) 600 N/m, 34.64 rad/sec, 5.52 Hz, 0.18 sec.

Explanation / Answer

3. C

4. D

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