Tuesday
December 10, 2013

# Posts by Patrick

Total # Posts: 260

economics
What were greenbacks?

Physics
Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which travel at different speeds. The speed of longitudinal waves, called P waves, is ...

Physics
i got the same answers you got but they are being read a sincorrect in my assignment.

Physics
The wave is travelling to the right at 50.0 m/s. What is the amplitude if the maximum displacement is 38.0 cm and the total distance travelled by the wave is 16.0 m. 2) What is the wavelength of the wave? 3)What is the frequency of the wave?

Chemistry
During the combustion of 5.00 g of octane, C8H18, 239.5 kcal is released. a) What is the sign of (delta)H for this reaction? b) How much energy is released by the combustion of 1.00 mol of C8H18

physical chemistry
For the process CH4(g) = C(s) + 2H2(g) A reaction is started in a rigid vessel at 1000 K with 1 mole of methane and 1 mole of hydrogen gas at 10 bar. Use table C.3 from your text to determine how many grams of carbon should be formed after the reaction has reached equilibrium.

calculus
Find the derivative of y=t^2(5t-8)^4.

math
Calculate the lower quartile (QL) in the following data set: (8, 6, 13, 8, 3, 15, 12, 5).

Chemistry
Ok I will try Kelvin. Thank you

Chemistry
I attempted using the Clausius-Clapeyron Equation and I am not getting anywhere

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