two particles are both negatively charged. they repel each other with a force of 1.5x10-4 N when they are 30cm apart. what is the magnitude of the force of repulsion when the distance between them is reduced to one - half?

In a vacuum, two particles have charges of q1 and q2, where q1 = +3.66 μμC. They are separated by a distance of 0.281 m, and particle 1 experiences an attractive force of 3.45 N. What is the magnitude of q2?

Three identical particles, each with a charge of 32.0 uC, are held in place at the corners of a 2.87-meter-long equilateral triangle. Determine the magnitude of one of the particles' total electric force.

Red blood cells often become charged and can be treated as point charges. Healthy red blood cells are negatively charged, but unhealthy cells (due to the presence of a bacteria, for example) can become positively charged. In the figure, three red blood cells are oriented such that they are located on the corners of an equilateral triangle. The red blood cell charges are A = 1.90 pC, B = 6.50 pC, and C = -4.80 pC. Given these charges, what would the magnitude and direction of the electric field be at cell A? (1 pC = 1 x 10-12 c.) Magnitude- Direction-

Electrophoresis gel can separate charged DNA samples in an applied electric field. Suppose a DNA sample contains negative charges of 60 electrons. What is the magnitude of the electric force on this charge in a 2,000 N/C electric field? O 1.2 x 10^-14 N O 2.5 x 10^-14 N O 2.0 x 10^-15 N O 1.9 x 10^-14 N O 3.2 x 10^-16 N

A water molecule can form hydrogen bonds with other water molecules. In such cases an H atom from one nolecule is 0.197 nm away from the O atom of another molecule. Calculate the force felt by the H atom due to all of he charges on the neighbouring water molecule. Take the j direction to be along the hydrogen bond pointing up. H Number Number 105⁰ H H N in the i direction N in the j direction

Two charged spheres are 5.86 cm apart. They are moved, and the force on each of them is found to have been tripled. How far (in cm) apart are they now?

In a vacuum, two particles have charges of q1 and q2, where q1 = +4.7C. They are separated by a distance of 0.35 m, and particle 1 experiences an attractive force of 3.5 N. What is the value of q2, with its sign?

Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle, as the drawing shows. The magnitude of each of the charges is 3.0 μC, and the lengths of the sides of the triangle are 1.0 cm. Calculate the magnitude of the net force that each charge experiences. B C (a) FA-i (b) FB= i 4.852e16 N 4.852e16 N (c) Fc= i 4.852e16 N

Three spiders are resting on the vertices of a triangular web. The sides of the triangular web have a length of a = 0.49 m, as depicted in the figure. Two of the spiders (S₁ and S3) have +8.1 µC charge, while the other (S₂) has -8.1 µC charge. a/2 O a/2 (a) What are the magnitude and direction of the net force on the third spider (S3)? magnitude N direction counterclockwise from the +x-axis (b) Suppose the third spider (S3) moves to the origin. Would the net force on the third spider (S3) be greater than, less than, or equal to the magnitude found in part (a)? O greater than in part (a) O less than in part (a) O equal to the part (a) (c) What are the magnitude and direction of the net force on the third spider (S3) when it is resting at the origin? magnitude N direction counterclockwise from the +x-axis