1. A tsunami travelled 3700km in 5.2h. If the frequencywas 2.9 * 10 -4 Hz, what

Question

1.   A tsunami travelled 3700km in 5.2h. If the frequencywas 2.9 * 10-4 Hz, what was its wavelength.
(Ans: 680km)

2.   A grandfather clock has a long pendulum with anadjustable mass that is responsible for the clock's ability to keepregular time. It's period is supposed to be 1secbut it executes 117 complete vibrations in 2 min.

a)    Calculate its period (I got it... ans:  1.02sec)
b)    Find the percentage error in the clockrecords (Ans: 2.56%)
c)    How many hours slow will the clock run after ayear? (ans: 225 hrs or 9.38 days)

Explanation / Answer

1) wavelength of tsunami                     = v / f v = velocity of the wave f = frequancy . plugg the knwon values in above relation and solve forwavelength .

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