Hi
If i have 3 4x1 matrices and i want to check if i can express a 4th matrix as the linear combination of the first 3.
my 3 vectors:
1 7 -2
4 10 1
2 -4 5
-3 -1 -4
can this vector be expressed a linear combination of the first...
Hi, I am having some trouble understanding the formula for the magnetic field for a straight wire.
The equation is:
B = (μ/4∏)(I/R)(sinθ2 - sinθ1)
the picture looks like this:
...___
__| . |____
with the current coming in from the left. To find the magnetic field at the point (middle)...
So I was doing some practice problems and one of them asked for the flux through one side of a cube that has a point charge(Q) at its center, it seems intuitive that it would be 1/6 of the charge but how would i show this?
if I do
∫E dA → E∫dA
the surface area of a cube is 6L2 so i would...
im sorry for the mess of equations but i have a final tomorrow night and my professor gives very little credit if we don't start from the basic equations of energy, kinematics, momentum, etc we arent allowed to make any shortcuts :(
you get 80% credit for the problem as long as you have the...
ok so here is what i did:
y: h=g/2 (t)^{}2 + V_{}iSinθ(t)
ΔV_{}y=a_{}y(t)
t=(V_{}iSinθ)\frac{}{}g
t=1.31 seconds
h=25.25 meters (makes sense since it was going 20 m/s and traveled for a bit over 1 second)
now for the final velocity, since the y component of velocity will be 0 at...
Homework Statement
You kick a ball at 20m/s at 40* from the horizontal, at the very top it hits a bird, stops immediately and fall straight down.
vi=20m/s
θ=40°
I need to calculate the velocity right before impact
the max height (height of collision)
speed of ball when right before it hits...
1.They claim that it is possible to store over 500 GW of power (presumably for part of a
day) in pressurized caverns of 535 billion cubic feet. If the storage time is one half day,
what is this in Joules per cubic meter?
[b]2.Watt=J/s
GW=1x10^12 Watts
1 cubic meter = 35.31466672 cubic...