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olganol [36]
3 years ago
14

How many magnitude 8 earthquakes does it take to equal the energy release for a magnitude 9 earthquake?

Physics
1 answer:
WINSTONCH [101]3 years ago
8 0
The popular Richter scale for measuring the magnitude of earthquakes is based on a log₁₀ scale.
Therefore, a magnitude 9 earth quake is 10 times a magnitude 8  earthquake.

That is, it takes ten magnitude 8  earthquakes to equal the energy released by one magnitude 9 earthquake.

Answer: 10
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3 years ago
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4 0
3 years ago
How efficient is a pulley system if it enables you to lift a 600.0 Newton engine 0.600 meters if you exerted 35.7 Newtons of for
muminat

Answer:

η = 0.882 = 88.2 %

Explanation:

The efficiency of the pulley system can be given as follows:

\eta = \frac{W_{out}}{W_{In}}\\\\

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