Tacobell

What do you mean the "x" factor?

This is a basic thermodynamic problem. H20(g)-H20(l) if deltaG<1 then condensation happens. In condensation, delta S is negative and delta H is negative. You want to make deltaG>1, so you have to increase T.

The odds would be the same. The occurrence was random. To make future predictions you need to compare the ratio of tickets you have to tickets sold. It would be the same no matter what happened to him.

Hello, I have been working on these two simple calc questions and I am getting them wrong. One is: Suppose that 3 J of work is needed to stretch a spring from its natural length of 30 cm to a length of 42 cm. (a) How much work W is needed to stretch the spring from 41 cm to 46 cm? (Round the answer to the nearest hundredth.) For this one I am integrating (1/4)*k from 11 to 16 and getting 16.875 J (b) How far beyond its natural length will a force of 50 N keep the spring stretched? (Round the answer to the nearest tenth.) For this problem I am confused. I am just doing 50=(1/4)*x; this is incorrect too. I have a feeling that my problem on these two questions are units There is this one last problem I am stuck on too, it seems very simple. For this problem I just saw that my distance had a y value of 3f so that means 3*6*40m. What am I doing wrong here? TacoBell

oops, it is [0, 2pi]

I got that. I then made a sign chart, [-----------pi/4-----------] and tested the CN's to see that on the left the derivative output is a negative number (this means that on this segment the function is decreasing) and to the left a positive number (meaning that the function is ascending). Ascending: [pi/4, 2pi] Descending: [0, pi/4] this is incorrect, I don't see where I am going wrong. Tacobell Merged post follows: Consecutive posts mergedI found the answer if anyone is wondering, Increasing: (pi/4, 5pi/4) Decreasing: (0, pi/4) U (5pi/4, 2pi)

I got the derivative and set it equal to zero and that is where the problems started, what are the critical numbers you got, if you don't mind. Tacobell

Hello, I am suck on this question and when through 1 tutor in person and 2 online tutors with no success (they could not get the solution, no joke) can someone help me out. The question is... Find the interval(s) in [ 0 , 2 ] on which the following function is increasing and those on which it is decreasing. f(t) = - sin t - cos t Any help would be great thanks! Tacobell

Thanks, for the help. This question is actually from a test I took last week. I just was wondering about the answer. I got the derivative of the formula for the area of a triangle then got the derivative of the Pythagorean theorem and solved both for height rate and set equal to each other (eliminating dh/dt) and then solved for the rate I wanted (dA/dt rate of area change). Is there anything wrong with this? Tacobell

Hello, this is my first post. I have a question of related rates that was giving me trouble, could someone help me, it is... There is an isosceles triangle with the sides increasing at a rate of 2 ft/min, the base is 19 feet, what is the rate of change of area when the height is 8 ft? Someone said to me take the derivative with respect to a variable other than t, this did not make sense to me because you want rate of growth per unit of time. Tacobell