I am a high school student and am currently thinking about which programs to apply to this winter for univerisity. I am really thinking about civil engineering because I LOVE to build stuff, always have and like to learn physics/math. The problem is though I don't think I am that good in...
I really need help as I have a test tomorrow and am having trouble with these problems.
I have attached the questions and my work in the picture below.
http://img79.imageshack.us/img79/9886/scan0001po5.th.gif
Both answers are wrong. Can somebody tell me what I am doing wrong and if my...
A mass of 10 kg is suspended from a ceiling by two cords that make angles of 30 and 45 degrees with the ceiling. Find the tension in each of the cords.
This is how I set up my diagram.
http://img205.imageshack.us/img205/1941/66920817mh7.th.jpg
I used the sine to try to find t1, but it...
I am totally lost on this problem and I don't know where to begin.
If a and b are unit vectors that make an angle of 60 degrees with each other, calculate
l 3a - 5b l
the and and b have a carat of top of them
Can someone help me get started?
I'm having trouble starting off with these equations:
sinx(sin x + 1) = 0
I can solve sin x + 1 =
Sin x = -1
x = -90
but then I don't know how to find all the solutions. Can someone please explain it to me. Thanks.
Hey guys! Well I was reading through this thread and found the posts quite interesting.
I have a question for you all, I am planning to go into Electrical Engineering and in Ontario there a few school that also offer a program called Electrical Engineering and Management. I have always been...
The questions is arranged like this:
1.00 mol of oxygen molecules ? oxygen molecules
I know an oxygen molecule is 02, so would it be 2 oxygen molecules?
It's my first day learning moles, so I'm very lost about the 1.00 mol.
What is this chemical formula called P(4)? *the 4 is the subscript
would it be tetraphosphorus?
and also chemical formulas like H(2), Br(2), and I(2) just called hydrogen, bromine and iodine? *numbers are subscripts
I have Fg = 0.75 N, so that would be the work done against gravity, right?
So how would I use that to find the force of friction (air resistence in this case, since the rocket is thrust upward)
I have to find the force of friction against a rocket that we launched at school. How would I do that?
I know coefficient = Friction/Fn
I only have Fn, how do I find the frinction?
I'm really lost :(
Thanks! That was very help full :)
But now I'm worried about my admission into a good university.
Do you guys think I have the potential to be a doctor judging on my marks? Basically do you think I'm smart enough? lol