By the law of Coulomb!
Charges A and B are placed a distance of 1.5m from one another. The charge of particle A is 0.003C whereas the charge of particle B is 0.006C. Charge B experiences an electrostatic force of Fb from charge A. Similarly, charge A experiences an electrostatic force of Fa from charge B.
1:1
Two point charges each have a value of 30.0 mC and are separated by a distance of 4.00 cm. What is the electric field midway between the two charges?
Zero
An initially uncharged hollow metallic sphere with radius of 5 cm has a small object with a charge of +10 µC carefully placed at the center of the sphere through a hole in the latter's surface. With the charge in place, what charge is now present on the outside surface of the sphere?
-10 µC
An electron (charge -1.6 x 10-19 C) moves on a path perpendicular to the direction of a uniform electric field of strength 3.0 N/C. How much work is done on the electron as it moves 15 cm?
zero!!!!!!
All of the following are vector quantities EXCEPT
a) rotational kinetic energy
b) torque
c) angular momentum
d) angular velocity
e) centripetal acceleration
rotational kinetic energy
The electron is 30 µm away from the proton on its left and 10 µm away from the proton on its right. What is the magnitude and direction of the net electric force acting on the electron?
2.04 xx 10^-18 N
to the right
Identical 4.0 nC charges are placed at the vertices of an equilateral triangle with 1.0m sides. What is the magnitude of the electric field at the midpoint of any of the three sides?
48 N/C
The total electric flux through a closed cylindrical (length = 1.2 m, diameter = 0.20 m) surface is equal to -5.0 N m2 /C. Determine the net charge within the cylinder.
-44 pC
The electric field in a region of space is given by the function
E=-30x+2
, where x is in meters and E is in Volts/meter. What is the electric potential at x = 2 meters, relative to the origin?
56 V
The momentum p of a moving object as a function of time t is given by the expression p = kt3, where k is a constant. The force causing this motion is given by the expression
3kt2
Two identical conducting spheres A and B carry equal charge. They are separated by a distance much larger than their diameters. A third identical conducting sphere C is uncharged. Sphere C is first touched to A, then to B, and finally removed. As a result, the electrostatic force between A and B, which was originally F, becomes:
(3F)/8
Charges of 4.0 µC and -6.0 µC are placed at two corners of an equilateral triangle with sides of 0.10 m. At the third corner, what is the electric field magnitude created by these two charges?
4.8 xx 10^6 N/C
A charge +q is placed at the center of a cube. What is the flux of the electric field through one face of the cube?
q/(6epsilon_o)
At what distance from a point charge of 8.0 μC would the electrical potential be 4.2 x 104 V?
1.7 m
A 20 kg box moving at an initial speed of 10 m/s slides 25 m to the right on a horizontal floor before it comes to a complete stop.
What is the coefficient of friction between the box and the floor?
0.20
An electron with a speed of 2.0 x 106 m/s moves into a uniform electric field of 500 N/C that is parallel to the electron's motion. How long does it take to bring the electron to rest?
2.24 x 10-8 s
A single point charge +8Q creates an electric field. What is the value of that field at a distance 2R to the right of the charge?
Q/(2piepsilon_o r^2)
A spherical conductor (radius = 1.0 cm) with a charge of 2.0 pC is within a concentric hollow spherical conductor (inner radius = 3.0 cm, outer radius = 4.0 cm) which has a total charge of -3.0 pC. What is the magnitude of the electric field 2.0 cm from the center of these conductors?
45 N/C
A potential difference V is maintained between two large, parallel conducting plates. An electron starts from rest on the surface of one plate and accelerates toward the other. Its speed as it reaches the second plate is proportional to
sqrt(V)
A pendulum with a period of 1 s on Earth, where the acceleration due to gravity is g, is taken to another planet, where its period is 2 s. The acceleration due to gravity on the other planet is most nearly
g/4
A particle of charge Q is fixed at the origin of an x-y coordinate system. At t = 0 a particle (m = 0.8 g, q = 4.0 μC) is located on the x axis at x = 20 cm, moving with a speed of 50 m/s in the + y direction. For what value of Q will the moving particle execute circular motion? (Neglect gravity.)
-11.1 μC
A uniformly charged insulating rod of length 14.0 cm is bent into the shape of a semicircle. The rod has a total charge of -7.50 µC. Calculate the magnitude of the electric field at the center of the circle.
2.17 x 107 N/C
Two identical parallel plates of area A have charges of equal magnitude Q but opposite signs evenly distributed through its area. A Gaussian surface is drawn that surrounds only the negative plate. Find the expression for the electric flux through the Gaussian surface.
-Q/epsilon_o
A solid conducting sphere of 10 cm radius has a net charge of 20 nC. If the potential at infinity is taken as zero, what is the potential at the center of the sphere?
1.8 x 103 V
A toy cannon is fixed to a small cart and both move to the right with speed v along a straight track. The cannon points in the direction of motion. When the cannon fires a projectile the cart and cannon are brought to rest. If M is the mass of the cart and cannon combined without the projectile, and m is the mass of the projectile, what is the speed of the projectile relative to the ground immediately after it is fired?
((M+m)v)/m