Recent content by ryu1

THANKS a lot you helped me solved this at last!

Homework Statement I have this problem I haven been trying to solve for a while: "Check if the following function is continuous and/or differentiable :" / (x^2-1) /2 , |x|=< 1 f(x) = \ |x| -1 , |x| > 1 The Attempt at a Solution So I managed to prove it is continuous for...

Thank you.

so I go exactly the same way from this point? 294.3KJ/10.475KJ*C = 28.095C =dT ? it does seems to be more realistic i guess. and the 2nd problem would be 294300-900=293.4KJ dT = 293.4/10.475 = 28.009C ? That is really close , but it's plausible if the change is only 900J ...is...

is it Ep = 1500KG*9.81m/s^2 *20m ? then i get 294.3KJ Is that correct? but this one is Potential energy so I got confused when talked about kinetic in the question.

Homework Statement 1.5ton (1500kg) object is dropped from 20 meters into a bucket with 2.5L of water in it. All the kinetic energy is transferred to the water in form of heat. What is the temperature rise of the water? 2. how much the water temperature rises if the object lifts during it's...

Water takes the form of liquid so it's important because then I can't apply the Ideal gas law to it? from the calculation I wrote I got 0.288 , it's almost 0.3, it is wrong? If a reactant (gases) to product mole ratio is for example 1:6 so always the partial pressure of the product is 6...

I think that if all C3H8 is consumed than according to the equation, 5 times that O2 will be consumed? (so it's 0.03 moles?) If 1 mole of C3H8 gives 3 moles of CO2 then I do 3/1 * 0.006 = 0.018 moles ? (=3 times the number) will it be correct to use the ideal gas law now? P=...

Homework Statement Hi In a container of 1.5L there are 2 gases O2 and C3H8. their partial pressures are O2 = 5atm, C3H8=0.1atm. the temperature is 20C. the reaction produces H2O and CO2. Temperature is constant. What is the partial pressure of CO2 after the reaction? (need to find...