October 28, 2009 - Ottawa Hills Local School District · 2017-10-04 · October 28, 2009 Newton's...
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October 28, 2009
Transcript of October 28, 2009 - Ottawa Hills Local School District · 2017-10-04 · October 28, 2009 Newton's...
October 28, 2009
October 28, 2009
October 28, 2009
3.5 Solving Exponential and Logarithmic Equationsx=3
42764
October 28, 2009
4 log10(x-6) = 11
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4. log3x + log3(x2-8) = log38x
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3 ln x = 5
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log (x-4) = 1
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7 - 3e-x = 2
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2x + 2-x
2= 3
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Order of Magnitude: The difference in the common logs of two distances. Its a way to compare like quantities.
ex.
1. A dollar is 2 orders of magnitude greater than a penny.
Find the order of magnitude of a bird weighing 20g and a hen weighing 2 kg.
October 28, 2009
Earthquake Intensity
R = log + Ba1T
How many more times severe was the 1995 Kobe, Japan earthquake (R = 7.2) than the 1994 Los Angeles earthquake (R = 6.6)
October 28, 2009
Newton's Law of Cooling
T(t) = Tm + (To - Tm)e-kt
T = temperaturet = time
Tm = temperature of surrounding medium
To = initial temperature of the object
A cake is removed from an oven at 350oF and cools to 120oF
after 20 min in a room at 65oF. How long will the cake take to
cool to 90oF?
