regor

This is a very broad question as I'm really new to the subject and don't know where to start. Say I have a thermometer and I want to record values of temperature every few hours and I want to record them onto my computer. How would I be able to make these two interact? How can I communicate data from surroundings to a computer? Thanks!

I really don't know how to do these problems, I know e^ix=cosx+isinx, but I dont see how it helps me to solve this.

a) [e^6i - e^-6i]/2i

b)e^(6e^(ipi/3))

Please help!

A few weeks ago, my computer was doing really well. All of a sudden, some videos on Facebook just stop at in the middle of the video, and if I restart the video it will stop again at the same point. To see the complete video, it was a matter of luck, I had to open the video up again in a new link, and pray for it to not stopped in the middle of the video. The same thing happens now also with youtube videos and basically any other kind of videos. On youtube, the problem is slightly smaller, as it just stops for a few seconds and tries to rebuffer and ends up working. on some other video sites, it says that my adobe flash or adobe flash shockwave has crashed. I have the newest versions to both the programs, so I don't know whats wrong. I have also tried on different browsers, and I have the same problem. Help?

A block attached to a spring is displaced from equilibrium to the position x = +2.1 m and released. The period is 3.2 s . At what positions and times during the first complete cycle do the following occur:

| v | = 0.5 v{max}, where v{max} is the maximum speed.

First position and time?

Second?

Third?

Fourth?

I've seen a question similar to this on yahoo answers, but I would like to know every detail about every calculation. How do you get to the answer?

5Pts for explanation, thank you.

The series from n=2 to infinity of:

(-1)^n (n/ln(n))

Ak= (Cos^2(k))/2^k

I have no idea how to do the limit as k approaches infinity.

Hint: the answer says it converges to 0

Integrate : Sqrt((1+x)/(1-x))

Thanks in advance !

For the ammonia synthesis reaction

N2 + 3 H2<-> 2 NH3

Kc = 0.0602 at 500 oC. Calculate Kp at this

temperature.

I know the formula is

Kp= Kc (RT)^Dn

But I don't know what Dn is in this case

I was thinking of doing integration by parts, but I do not know what to set as what ( u and dv )

I've thought about just regular substitution, but I am not sure if it is correct.