Recent content by elitewarr

Hello Peter, That step is kind of like taking the inner product of f with f. To put it into perspective, if we take an expression (a+b) squared, we would get a^2 + 2ab + b^2. Same concept here from what I see. elite

Thank you for the fast reply. Okay. I was suspecting much. But how do I do the integration for the ## \frac{1}{v} ## with respect to ds? Any clues as to where to start?

Homework Statement The rocket sled has a mass of 4 Mg and travels along the smooth horizontal track such that it maintains a constant power output of 450 kW. Neglect the loss of fuel mass and air resistance, and determine how far the sled must travel to reach a speed of v = 60 m>s starting from...

Sorry for the late reply. Thank you guys. But I think the simpler version should suffice according to the logistic equation. And.. I don't rawly understand what you wrote economicsnerd haha.. My knowledge isn't that advanced yet..

Well in my opinion, the situation is same as a single string if that is the case. You can try imagine it yourself - if the block is hit by a bullet, the only string pulling back the block is the first string. The other string is not doing anything since it is not taut at all.

Well how is the block attached by the 2 strings? Are the strings in the same plane or another plane to the bullet?

Hello guys, I am quite unsure in how to start the modeling for population. If I define y as the number of infected persons and y' as the rate of spread is it correct? I see the number of contacts between infected and non infected persons to be equal to the number of infected persons. Otherwise I...

Oh... So if I changed my answer to 8!/2! * 9C2 * 7C2 * 5C1, where 9C2 is to select ways to place O's, 7C2 to place I and 5C1 to place A, am I right?? Thanks!

For the problem you gave, I will be inserting the vowels O, I and A into the spaces between other letters. Like, $#$#$#$#$#$#$#$#$, where $ is the possible ways I can slot O,I and A and # are the rest of the letters. So first I arrange the #, which is 8! / 2!. For the vowels, it will be 9C5...

Thanks for the reply guys! So for me to arrange the 4 letters BEEA, there will be 4! / 2! ways. After which, since there are 5$, I will be choosing 3 $ out of the 5 to place the T's. So, it will be 5C3. Now if we put the 3 N's into the newly-formed string, there will be 8C3 ways. So in total...

Homework Statement Find the number of different arrangements of the name "BENNETT TAN" with all the T's separated and all the N's separated. Homework Equations The Attempt at a Solution I have no idea how to start this question. If anyone is so kind to help me. Thank you. I...

Ok. Thanks a lot. I have somewhat an idea of how to solve it.

Homework Statement dV/dT = 0.15(300-V) V is the volume of water in a container at time T. The rate of water flowing into the container is constant at 45 units^3/s. The rate of water leaking is proportional to the volume of water currently in the container. Find the volume of water in the...

Oh... "the dicyanides [M(CN)2]− (M = Cu, Ag, Au), which are linear in geometry." from wiki But why? M is the ligand and both CN- are bonded with M. So the ionic bond in between them is at 180 degrees?

Homework Statement What is the carbon-silver-carbon angle in the complex ion [Ag(CN)2]-?? Homework Equations The Attempt at a Solution The answer is 180 degrees why? I thought that complex ion is a ionic compound? If so, how would the shape be like? Thanks.