Homework Statement
In an electrochemical cell what would happen if an electrolyte is conducting both ions and electrons?
Homework Equations
The Attempt at a Solution
So I know electrolytes usually conduct ions and are electronic insulators. I know the electric current that...
Hi there. I was attempting this problem but my answer is not agreeing with my friends.
He got 1.4 *10^-7
Any help will be appreciated.
Homework Statement
Calculate the work done on a system if its voltage drops from 15 V to 5 V.
edge length= 1 cm
water permittivity e=78.54e
Homework...
Integration by parts :(
hi I have been trying this question for quite a while now and am unsure of what to do. Any help would be apprectiated.
Integral x^13 cos(x^7) dx
I know you have to use integration of parts. Here is what i have done so far:
let U=x^3
dU =13x^12 dx
dV=cos(x^7)...
What are you trying to say here bengali babu? i dont understand how you say it seems kinda accurate and then you say that my graph just goes up wihtout changing direction. thank for ur help, but i dont get what ur trying to say. can you please clarify. thanks.
help plz...graph
Here is a question i am havin a bit of trouble with.
http://img125.imageshack.us/img125/8824/cs2rr.jpg [Broken]
This is what i figured out:
f'(1) must be a local max or min since hte derivativee is 0
the second line are the vertical and horz assympotes.
there is a...
then would it be:
2.5cscθ + 2secθ = y
2.5(-cscθ)(cotθ)(dθ/dt) + 2(secθ)(tanθ)(dθ/dt) = y'
2.5(-cscθ)(cotθ)(dθ/dt) + 2(secθ)(tanθ)(dθ/dt) = 0
and what would u do next? i am confused.
so...
you are trying to max x +y
sinθ=2.5/y
y=2.5/sinθ
cosθ=2/x
x=2/cosθ
2.5/sinθ + 2/cosθ = sum
from this part i get confused...
2.5/cosθ - 2/sinθ = ds/dt
2.5/cosθ - 2/sinθ = 0
2.5/cosθ = 2/sinθ
the answer is 6.35.
Hello,
Below are two questions i am unsure of. :uhh: Can someone please verify my answers and tell me if i am doing something wrong. :yuck: thank-you for your help. :smile:
1. A rigid beam 30 m long is leaning against a vertical wall. If the bottom of the beam is pulled horizontally...
calculus help :(
John has to carry a long piece of wood horizontally around the corner from a hallway of width 2 m to a hallway of width 2.5 m. Assuming that the piece of wood has no width, what is the maximum length of this piece of wood (in meters)? Give answer to two decimal places.
i do...
So you end up with two triangles...do you use similar triangles ?
5/(4-x) = 3/x
you get the answer
x=3/2
if this is right how are the two triangles similar ?
calculus...no clue :(
Here is this question, I have no clue how to do it, I have tried it several different ways but cannot manage to get the right answer. Any help will be appreciated.
There is a 4 km long straight beach. At one end, there is a boat anchored at A, 3 km off the beach. At...
New Horizons Travel adversities a package plan for a vacation. The fare for the flight is $400/person plus $8.00/person for each unsold seat on the plane. THe plane holds 120 passengers and the flight will be cancelled if there are fewer than 50 passengers. What number of passengers will...
I have a calculus question and was wondering if some could help me see what I am doing wrong in this question. Thank you
A conical tank with an altitude of 10m and whose base has a radius of 4m is mounted with its vertex down. The tank is full of water which is draining through the vertex...