Recent content by Suitengu

Homework Statement Prove that the equation x(t)=e-ζωnt(a1ejωdt+a2e-jωdt) is the same as x(t) = Ae-ζωntsin(ωdt+φ) Homework Equations Refer to the first question's answer. The Attempt at a Solution Have no idea how to start this problem. That is probably because I am low on funds and...

c'mon guys its been over two days an no help...oh man

A piston-cylinder device contains 0.85 kg of refrigerant 134a at -10 degrees celsius. The piston that is free to move has a mass of 12 kg and diameter of 25 cm. The local atmospheric pressure 88 kPa. Now, heat is transferred to refrigerant 134a until the temperature is 15 degrees celsius...

Oh I see sir. I figured that was the problem since it wasnt look at as promptly as before. That suggestion will be duly noted nevertheless. Thanks for all your work mon. You've been a big help.

Dont know if this topic is being seen as read by others cause I haven't gotten a response as yet but Halls sir could you look at my post before this again if that's not too much trouble.

Yea after I finished working the problem, I found that I should have simply just do it like that but I guess I wasnt thinking at the time. As for the last one, would I reverse lookup the 0.95 as F(x) as that's what I interpreted it as and I got the x or z in your case to be approx. 1.6. I...

Man I hate probability...anyhow could some help me with this Q as I am not understanding how to set it up... Suppose that the force acting on a column which helps to support a building is normally distributed with mean 15.0 kips and standard deviation 1.25 kips: What is the probability...

Never mind guys I got it. Didnt know one could manipulate the erf function as I did.

[SOLVED] Non-Steady State Diffusion Homework Statement For a steel alloy below, it has been determined that a carburizing heat treatment of 10 hr duration will raise the carbon concentration to 0.45%. Estimate the time necessary to achieve the same concentration at a point 5.0 mm position for...

Okay thanks man. You have been a big help.

No no I know why you multiplied each other because they're independent events. But I got it nevertheless after reflecting on the matter. You multiplied the first one by 13 because after finding the ways of drawing three cards from four cards(a set) you needed to find how many would come from 13...

Oh yes. High school probability is coming back to me. I knew that last part. From you told me earlier that total it should be divided by the total possible outcomes, I figured it would be 52nCr5 as and that will give you the total combination of five cards in general, whether it be full house or...

yeah all those formulas have been used by me at least once between college and primary school(junior high i guess for you guys). So now i understand how many ways to pick 3 cards and as a result how to do two as well. Now the result of say 4nCr3. What do i do with it. You said multiply it by...

I understand the 13 and 12 part as there are 13 sets in the 52 card pack and if you pick one kind, you'll clearly have 12 sets that your are able to pick from the second time around. But I am still at a lost. I really don't know how many ways to pick three cards for each card type as well as the...

Homework Statement Whats the probability of drawing a full house(three of a kind and two of a kind) from a deck of 52 cards without replacement. Homework Equations The Attempt at a Solution I know that the first two cards are fine but next one should either be of the first one...