Recent content by apbuiii

I don't think I used your method, but I did end up figuring it out. Thanks for your help though.

Homework Statement A harmonic oscillator with a vertical mass on a string has a hanging mass of 2m and a spring constant of K. It oscillates with an amplitude of Z. When its position is at a distance Z/2 of the equilibrium point, its potential energy is Ui. What is the maximum kinetic energy...

Ah, I see what you're saying and I am taking what you left there for me :) Haha. I guess the introduction of two variables at a time confused me haha. One thing at a time... Thank you!

Homework Statement Harmonic wave is described by: h(x,t)=cos(2∏(2x-t/2)). The equation is expressed as the height of the wave At time t0 a peak of the wave is at position X0. What is the magnitude of the distance to the nearest peak at this time? How much time passes before another peak is...

Yeah, thanks guys. I ended up figuring it out :)

Okay, so I did (300)(4.18)(100-20)= 100320 J. Then I subtracted that from 350000J to get 249680 J. This is where I get a little confused... Do I then do this: 249680=mols(40.7KJ)(1000J). That gave me 6.13 moles of water and then I change that to grams to give me 110.4 grams of water that it can...

Homework Statement Suppose you have a 24 ounce mug of soda (treat as water) at room temperature, which is 22 C. Warm soda tastes bad, so you add 125 g of ice at -25 C to the soda. What is the temperature (in C) of the soda once all the ice melts and the solution reaches a uniform temperature...

Homework Statement Suppose you put a coffee pot containing 300 g of water at 20 C on the stove. You then add 350 kJ of heat to the water, which heats the water to 100 C and the water starts to boil. After all the heat is added to the water, then how much water do you still have left? The heat...

Okay thank you. Well, I asked this question because of this problem: The reaction of 50 mL of chlorine gas with 50 mL of Ethylene gas Cl2 (g) + C2H4 (g) = C2H4Cl2 (g). How many mL of product will be produced? The answer is 50mL but I don't understand why. Since there is 50 mL of chorine and 50...

Homework Statement The reaction of 50 mL of H2 gas and 50 mL of N2 gas via the equation: 3H2 + N2 ---> 2NH3 will produce how many mL of product? A reaction of 25 mL of Hydrogen gas and 75 mL of Nitrogen gas? Assume that temperature and pressure are constant. Homework Equations...

Okay, I see. So I don't have to add the 38mL of Sulfuric acid for the liters of solution. I kind of thought so. I guess the information about Sulfuric acid was superfluous...

Homework Statement When 38 mL of 0.1250 M H2SO4 (sulfuric acid) is added to 100 mL of solution of PbI2 (Lead(II) Iodide) a precipitate of PbSO4 forms. The PbSO4 (Lead(II) Sulfate) is then filtered from the solution, dried, and weighed. If the recovered PbSO4 is found to have a mass of 0.0471...

Yeah... it was a typo by the professor. Haha. Thanks anyways though!

Homework Statement Suppose the concentration of phosphate in Phoenix tap water is 7.3 ppm (mass based), then what is the concentration of selenium in milligrams per liter? The density of water is 1 g/mL. Homework Equations Phosphate: PO4-3; 7.3 parts/million The Attempt at a Solution...

How about this lame one. . . Why can't bicycles stand up? 'cause it's two tired :smile: