The Richter scale is a measure of the intensity of an earthquake. The energy E (in joules) released by the quake is related to the magnitude M on the Richter scale as follows.
E = 104.4101.5M
How much more energy is released by a magnitude 7.6 quake than a 5.6 quake?
The Richter Scale gives a mathematical model for the magnitude
of an earthquake in terms of the ratio of the amplitude of an
earthquake wave (also known as the intensity of an earthquake) to
the amplitude of the smallest detectable wave. If we denote the
magnitude of the earthquake by R, the intensity (also known as the
amplitude of the earthquake wave) of the earthquake by A, and the
amplitude of the smallest detectable wave by S, then we can...
Write detailed comparison between anatomy of the gleno-humeral
and hip joints. Describe their anatomy and discuss their model of
stability compared to each to each other. Which is more stable? Why
and not? What factor effects their stability?
With the aid of a suitable example and labelled diagrams write a
detailed note on the physical behaviour of aqueous solutions of
ionic surfactants. Choosing at least three physical properties to
explain clearly the variance in each physical property as a
function of surfactant concentration.
The intensity levels I of two earthquakes measured on a seismograph can be compared by the formula log I1/I2 = M1 – M2, where M is the magnitude given by the Richter Scale. In August 2009, an earthquake of magnitude 6.1 hit Honshu, Japan. In March 2011, that same region experienced yet another, more devastating earthquake, this time with a magnitude of 9.0. How many times greater was the intensity of the 2011 earthquake? Round to the nearest whole number.