Two small plastic spheres are given positive electrical charges. When they are a distance of 14.0 cm apart, the repulsive force between them has a magnitude of 0.240 N You may want to review (Page). For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Force between two point charges. ▾ What is the charge on each sphere if the two charges are equal? Q= Submit Part B Q₁ = Submit Part C What is the charge on the first sphere if it equals one-quarter the charge of the second sphere? 1951 ΑΣΦ Q₂ = Request Answer Submit 15] ΑΣΦΑ Request Answer ? 15] ΑΣΦΑ What is the charge on the second sphere described in the previous part? Request Answer www ? C C www ? с C

An outside force, Fo, brings two small metal spheres, A and B, at rest from a long distance away to a point where they are 0.9 meters apart. They are then connected by a non-conducting string of negligible mass. The spheres have mass mA = 5.2 g and mB = 10.4 g and both have equal positive charges of 5 μC. (You may assume the length of the string is much greater than the radii of the spheres.) 1)What was the total work done by the outside force to bring the spheres to the point described? 2)What was the total work done by the electric field when the two sphere were brought together as described? 3)What is the potential energy of the two sphere system after they have been brought together as described? (You may assume the spheres had zero potential energy when they were a long distance apart.) 4)Suppose you cut the string. At that instant, what is the magnitude of the acceleration of sphere A? 5)After a very long time, what is the magnitude of the velocity of sphere A?

Two charged particles are a distance of 1.72 m from each other. One of the particles has a charge of 8.01 nC, and the other has a charge of 4.22 nC. (a) What is the magnitude (in N) of the electric force that one particle exerts on the other?  N (b) Is the force attractive or repulsive?

Red blood cells can often be charged. Consider two red blood cells with the following charges: -21.4 pC and +51.0 pC. The red blood cells are 2.71 cm apart. (1 pc = 1 x 10-1² C.) (a) What is the magnitude of the force on each red blood cell? N Are the red blood cells attracted or repulsed by each other? O attracted O repulsed (b) The red blood cells come into contact with each other and then are separated by 2.71 cm. What magnitude of force does each of the red blood cells now experience? N Are the red blood cells attracted or repulsed by each other? O attracted O repulsed

Two pollen grains each possess a net electric charge. The left grain has g₁ = 7.4×10-6 Coulombs of charge, and the right grain has q₂ = 3.5×106 Coulombs of charge. The pollen grains are separated in space by a distance of r = 0.14 meters. How strongly do the pollen grains electrically push or pull on each other (in Newtons)? Recall that the Coulomb constant is k = 8.99 × 109 N. m² x

Two charged particles are a distance of 1.72 m from each other. One of the particles has a charge of 7.17 nC, and the other has a charge of 4.18 nC. (a).What is the magnitude (in N) of the electric force that one particle exerts on the other? n?   (b)Is the force attractive or repulsive attractive or  repulsive ?

Two equal charges are situated on the x axis at 40.0 cm on either side of the origin as shown in the figure below. Location A is on the perpendicular bisector at a distance of 29.0 cm from the origin on the y axis. (Assume that the +x axis is directed to the right and the +y axis is directed up.)   (a) If q1 = −3.25 µC and q2 = −3.25 µC,what is the net electric field due to both charges at location A? Express your answer in vector form.     (b) If q1 = 3q2 (where q2 = −3.25 µC),what is the net electric field at location A due to both charges? Express your answer in vector form.

Four identical charged particles (q = +10.7 μC) are located on the corners of a rectangle as shown in the figure below. The dimensions of the rectangle are L = 63.6 cm and W = 14.5 cm. 9 9 W L (a) Calculate the magnitude of the total electric force exerted on the charge at the lower left corner by the other three charges. N (b) Calculate the direction of the total electric force exerted on the charge at the lower left corner by the other three charges. ° (counterclockwise from the +x-axis) Need Help? Read It

In the classic model of the hydrogen atom proposed by Niels Bohr, the electron rotates around a stationary proton in a circular orbit with an approximate radius r = 0.053 nm, see the figure below. (a) Find the magnitude of the electrostatic force of attraction, Fe, between the electron and the proton. (b) Find the magnitude of the gravitational force of attraction, Fg, between the electron and the proton, and then find the Fe / Fg ratio.

A total charge of 4.69 C is distributed on two metal spheres. When the spheres are 10.00 cm apart, they each feel a repulsive force of 4.1*10^11 N. How much charge is on the sphere which has the lower amount of charge?