Wednesday
June 19, 2013

# Posts by Carla

Total # Posts: 187

Physics 102 (College)
I'm stuck on part B of this question: A system does 125 J of work on environment and gains 79 J of heat in the process. Find change in internal energy (delta U, abbreviated dU)of a. the system and b. the environment. A. Find dU of the system W = 125 J Q = 79 J dU = Q - W d...

Physics 102 (College)
Hmm, 5 didn't work for this particular problem, but thanks for the suggestion

Physics 102 (College)
I'm stuck on part B of this question: A system does 125 J of work on environment and gains 79 J of heat in the process. Find change in internal energy (delta U, abbreviated dU)of a. the system and b. the environment. A. Find dU of the system W = 125 J Q = 79 J dU = Q - W d...

Physics 102 (College)
Thank you drwls! Explaining what the question was asking for helped me realize the problem was actually much simpler than what I was trying to do. W = -4250

Physics 102 (College)
A few homework problems. 1) The temp of a monotomic ideal gas remains constant (isothermic) during a process in which 4250 J of heat flows out of gas. How much work is done? Pos/neg? delta T = 0 and delta U = 0 by inference Q = 4250 U = 3/2 nRT Thanks for help/hints

com
what would be the verb and its tense: Successful financial planning can be improved through good education.

math question 4- very urgent !
Find the average value of f(x) = x^3 + 3 for 0 ≤ x ≤ 2 and find all values of x* described in the Mean Value Theorem for Integrals.

math question 3- very urgent !
Find x* on [0, 2] such that f(x*) equals the average value of f(x) = 5x + 9 over [0, 2].

math question 2- very urgent !
Given f (x) = √(7 + x) + 4 . Use the rectangle method to approximate the area on the interval [0, 8] using 4 rectangles. (Assume the graph goes through the midpoint of each rectangle.)

math - very urgent !
Verify that f(x) = x^3 − 2x + 6 satisfies the hypothesis of the Mean-Value Theorem over the interval [-2, 3] and find all values of C that satisfy the conclusion of the theorem.

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