How many times more intense is an earthquake that measures 7.5 on the richter scale than one that measures 6.7? (recall that the richter scale defines magnitude of an earthquake with the equation m=log i/s , where i is the intensity of the earthquake being measured, and s is the intensity of a standard earthquake

6.31 times ( approx )

Explanation:

Given formula to find the magnitude of an earthquake is,

Where,

I = intensity of the earthquake being measured,

S = the intensity of a standard earthquake,

By the above formula,

Since, S is constant,

If M = 7.5,

Then intensity of the earthquake,

If M = 6.7,

Then intensity of the earthquake,

Hence, the earthquake that measures 7.5 on the Richter scale is 6.3 times more intense than the earthquake that measures 6.7.

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

search it up!

explanation: