Answer:
100
Step-by-step explanation:
M = log(I/S)
The intensity of the first earthquake:
8 = log(I₁/S)
10⁸ = I₁/S
I₁ = 10⁸ S
The intensity of the second earthquake:
6 = log(I₂/S)
10⁶ = I₂/S
I₂ = 10⁶ S
The ratio is:
I₁/I₂ = (10⁸ S) / (10⁶ S)
I₁/I₂ = 100
It is 100 times stronger.
Answer:
![0.47 \to 2\ digits](https://tex.z-dn.net/?f=0.47%20%5Cto%202%5C%20digits)
![3.2 \to 1\ digit](https://tex.z-dn.net/?f=3.2%20%5Cto%201%5C%20digit)
![Product \to 3\ digits](https://tex.z-dn.net/?f=Product%20%5Cto%203%5C%20digits)
Step-by-step explanation:
Given
![0.47 * 3.2 =](https://tex.z-dn.net/?f=0.47%20%2A%203.2%20%3D)
See comment for complete question
Required
The number of decimal places
To do this, we simply calculate the number of digits after the decimal points
![0.47 \to 2\ digits](https://tex.z-dn.net/?f=0.47%20%5Cto%202%5C%20digits)
![3.2 \to 1\ digit](https://tex.z-dn.net/?f=3.2%20%5Cto%201%5C%20digit)
The product is the sum of the digits above 2 + 1 = 3
Hence:
![Product \to 3\ digits](https://tex.z-dn.net/?f=Product%20%5Cto%203%5C%20digits)
Answer:
g = 4
Step-by-step explanation:
5g = 20
Divide each side by 5
5g/5 = 20/5
g = 4
Answer:15 percent
Step-by-step explanation:
(.75) / 5 = 3/20 = 15/100 = 15%