A person runs a 9.0 V, 12.0 W radio for 1.33 hours. How many coulombs of charge pass through the wires in the radio during this time?
I used Power= pot difference/Resistance = 9v/120w=7.5e-2
Then I used I²=P/R= 120v/7.5e-2 = 1.6e3
1.33h*60mins*60secs = 4.788e3...
A proton is released from rest and accelerates through a potential difference V. The final speed of the proton is proportional to the potential difference in which of the following ways?
I think it is V^(1/2) (just√V) but I am no sure exactly how to find...
I'm review for a test in the morning and just making sure I have this right. The professor did not include a key for the review.
ere is a link to the image for both problems.
In the figure, two curved plastic rods form a circle of radius R in the standard x-y plane.
The charges of the...
In the figure shown, electrons 1 and 2 are on the x-axis while charges
3 and 4 are on the y-axis. The charges 3 and 4 are identical with
charge -Ne and at identical angle θ(theta). N is an integer. Electron 2 is
free to move while the other charges are fixed in place a horizontal
Derive your results algebraically… No graphical results.
An excess charge of +Q is distributed into two unequal parts, one having charge +q .
Assume that these two new charges are now separated by a non-zero distance. What value of q maximizes the repulsive electric force that one of these new...
Two small spheres, each of mass 4.00 g, are suspended by light strings 10.0 cm in length. A uniform electric field is applied in the x direction. The spheres have charges equal to -2.00 multiplied by 10^-8 C and +2.00 multiplied by 10^-8 C. Determine the electric field that enables the spheres...
A proton orbits just at the surface of a charged sphere of radius 0.83 cm. If the speed of the proton is 4.96 X105 m/s, what is the charge on the sphere?
proton mass = 1.67e-27
proton charge = 1.6e-19
Radius = .0083 meters
I thought maybe F = (mv²)/r