Homework Statement
Find the equivalent resistance across Rab
Homework Equations
Series: Req=R1+R2...Rn
Parallel Req=(R1 * R2 *...Rn) / (R1 + R2 +...Rn)
The Attempt at a Solution
its the geometry that is throwing me off in this problem.
Starting on the left side,
I want to put...
Homework Statement
A small metal sphere, carrying a net charge of q_1 = -2.60 \mu C, is held in a stationary position by insulating supports. A second small metal sphere, with a net charge of q_2 = -7.70 \mu C and mass 1.40 g, is projected toward q_{1}. When the two spheres are 0.800 \rm m...
Homework Statement
A point charge q_1 = -4.00 {\rm nC} is at the point x = 0.60 {\rm m}, y = 0.80 {\rm m} , and a second point charge q_2 = +6.00 {\rm nC} is at the point x = 0.60 {\rm m} , y = 0
Calculate the magnitude of the net electric field at the origin due to these two point...
Homework Statement
An electron is projected with an initial speed v_0 = 2.00×106 {\rm m/s} into the uniform field between the parallel plates in the figure (Intro 1 figure) . Assume that the field between the plates is uniform and directed vertically downward, and that the field outside the...
Homework Statement
A very long uniform line of charge has charge per unit length 5.38 micro coulombs /m and lies along the x-axis. A second long uniform line of charge has charge per unit length -3.66 micro coulombs /m and is parallel to the x-axis at y = 0.400m. What is the net magnitude of...
Homework Statement
Keeping all other values the same in the problem suppose now that the third charge has a value of 7.98 nano coulombs. What is the magnitude of the total force exerted by the first two charges on the third charge. Give your answer in scientific notation to three...
I used a=alpha*r and i got the alpha to be .003, using Omegaf2=Omegai2+2*alpha*Theta i get 28166, but the answer should be 672.9
EDIT: nevermind, i got it, thanks!
Homework Statement
A wheel, with circumference 0.6 m and moment of inertial 43 kg m2 about its center, rotates about a frictionless axle with angular velocity 13 radians per second. A brake is applied which supplies a constant force to a point on the perimeter of the wheel of 9 N, tangent...
Homework Statement
You are working on a project with NASA to launch a rocket to Mars, with the rocket blasting off from Earth when Earth and Mars are just aligned along a straight line from the sun. As a first step in doing the calculation, assume circular orbits for both planets. If Mars is...
for the first few tries i canceled one r on each side of the equation, it came out to be
r=G*M*Me/M*(2pi/32)^2
then i realized i was cancelling a r with a 1/r, so i carried the r^2 over and it became r^3, so i took the cube root of the answer, tried cancelling the M's, and still nothing.
ahh thanks for catching that Doc. Al :D I'm sorry i still haven't solved it, I am really getting frustrated haha... i made the change in the equation but my answer is still off, is the mass in Fg=M*ac the mass of the object, right?
ok so i setup it up to look like this:
Fg=m*r*(32/2pi)2
Then i substituted it back into the original equation and i got:
G*M*Me/M*(32/2pi)2=r
and this comes out to 1.87e10
the correct answer is supposed to be 4.26e8
I set it up so that Fg=Mac, since Ac=V2/r, but the radius is still in the equation. If substituted it back in i would have another unknown, velocity. What am i missing here? is there another force?
edit:
Should i use v=r*omega, Period=2pi/omega, and substitute v=r*(28/2pi) into the Fg=M(V^2/r)...
Homework Statement
An object of mass 7.1x1023 circles the Earth and is attracted to it with a force whose magnitude is given be Gmem/r2. If the period of rotation is 32 days, what is the distance from the Earth to the object? Here G=6.67x10-11 Nm2/kg2, me=6x1024 kg.
Homework Equations...