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➷ Waves are commonly caused by wind. However, tides are caused by the gravitational attraction of the sun and moon on the oceans.
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Half life is the time taken by a radioactive isotope to decay by half of its original mass. In this case the half life of carbon-14 is 5500 years.
The original mass is 30 g and the new mass is 3.75 g.
New mass = Original mass × (1/2)^n, where n is the number of half lives;
3.75 = 30 × (1/2)^n
1/8 = (1/2)^n
n = 3
Thus, the time taken will be; 3 × 5500 = 16500 years.
Answer:
B
Explanation:
if the vibration has a low frequency then the sounds gonna be low as well as a high frequency having a higher sound
Answer:
anser is 20 thank youjnsbsb