Mathematics, 31.01.2020 15:55 chassidytjtrimb

An earthquake registered 7.4 on the richter scale. if the reference intensity of this quake was 2.0 × 1011, what was its intensity?

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Answer from: gibbss80stu

The intensity was $5.02377\times 10^{18}$

Step-by-step explanation:

We are given

An earthquake registered 7.4 on the Richter scale

so, RC=7.4

the reference intensity of this quake was 2.0 × 10^11

so,

$I_r=2.0\times 10^{11}$

now, we can use formula

$RS=log(\frac{I}{I_r} )$

now, we can plug values

$7.4=log(\frac{I}{2.0\times 10^{11}} )$

now, we can solve for I

$10^{7.4}=\frac{I}{2.0\times 10^{11}}$

$I=10^{7.4}\times 2.0\times 10^{11}$

$I=5.02377\times 10^{18}$

Answer from: Animallover100

The formula to find the intensity is R = logI

R equals the magnitude, which is 7.4

7.4 = logI
Change that to exponential form:

10^7.4 = I

The intensity is 25,118,864.32

Answer from: Quest

step-by-step explanation:

19. what two-dimensional shape is formed by a cross section of the cube shown if the cross section p

Answer from: Quest

"it's not the heat, it's the humidity". that's a partly valid phrase you may have heard in the summer, but it's actually both. the heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature. this has important considerations for the human body's comfort. when the body gets too hot, it begins to perspire or sweat to cool itself off. if the perspiration is not able to evaporate, the body cannot regulate its temperature. evaporation is a cooling process. when perspiration is evaporated off the body, it effectively reduces the body's temperature. when the atmospheric moisture content (i.e. relative humidity) is high, the rate of perspiration from the body decreases. in other words, the human body feels warmer in humid conditions. the opposite is true when the relative humidity decreases because the rate of perspiration increases. the body actually feels cooler in arid conditions. there is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).

step-by-step explanation:

75% of the temperatures are below what value? how do you know? 75% of the temperatures are above w

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