Let a point charge Q1- 25 nc be located at (4,-2,7) and Q2= 60nc be at (-3,4,-2).
a)Find E at (1,2,3) b)at what point on the y-axis is Ex=0
For part a) i found the electric field to be 68.92x-32.319y+85.936z
b)would electric field on Ex be 0 at y=32.319??
I was wondering how come when ever there's a question like aluminum reacts with bromine it is usually written like Al + Br2? or Potassium reacts with oxygen is K + O2?
How do we know when there's 2 of them?? Is there like a special rule? Why isn't there K2 or Al2??
The set of orthogonal trajectories for the family indicated by
( x-c)^2 + y^2 = c^2
My work:
y' = -(x-c)/y Since c= ( x^2 + y^2 ) / 2x
plugging back in and doing -1/y' i got
y' = 2xy / ( x^2 - y^2)
Then I am supposed to move the x and y to a side and integrate but i don't...
Give the general solution of:
dy/dx = 6x y^2 -6x + 3 y^2 -3.
No clue how to start. Guessing you would use Bernoulli's equation but i don't see how it is possible to put in the y'(x) + p(x)y(x) = q(x) y(x)^n form.
the general solution for ye^x dy/dx = [e^-y ] + [ e^ -2x-y ]is:
so i tried to see if this was a homogenous equation but it is not.
next i tried to simplify and got:
y e^y dy= (1+e^-2x) dx / e^x
Homework Statement
The Earth intercepts 1.27 ´ 1017 W of radiant energy from the Sun. Suppose the Earth, of volume 1.08 ´ 1021 m3, was composed of water. How long would it take for the Earth at 0°C to reach 100°C, if none of the energy was radiated or reflected back out into space?
no...
Just wondering on a pressure volume graph is the temperature constant??
so does that mean the the heat taken in during the process is the negative of the change in energy of the gas??
Homework Statement
An 8 000-kg aluminum flagpole 100-m long is heated by the sun from a temperature of 10°C to 20°C. Find the heat transferred (in J) to the aluminum if the specific heat of aluminum is 0.215 cal/g °C.
Homework Equations
Q=mc delta T
The Attempt at a Solution...