A 60-cm-long tube that is closed at one end and open at the other is filled with an unknown gas. The gas in the tube is vibrating at the second-lowest-frequency standing wave (the next higher frequency from the lowest). (a) In the picture below, show where the displacement node(s) (N) and antinode(s) (AN) would be located. Ignore the end correction. (b) If the frequency of vibration is 700 Hz, calculate the speed of sound in the unknown gas.

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Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.