Two identical small conducting spheres are separated by 0.60 m. The spheres carry different amounts of charge and each sphere experiences an attractive electric force of 10 8N The total charge on the two spheres is-24 pC. The two spheres are now connected by a slender conducting wire, which is then removed. The electric force on each sphere is closest to

Two red blood cells each have a mass of 9.05 x 10-¹4 kg and carry a negative charge spread uniformly over their surfaces. The repulsion arising from the excess charge prevents the cells from clumping together. One cell carries -3.00 pC and the other -2.90 pC, and each cell can be modeled as a sphere 3.75 x 10-6 m in radius. If the red blood cells start very far apart and move directly toward each other with the same speed, what initial speed would each need so that they get close enough to just barely touch? Assume that there is no viscous drag from any of the surrounding liquid. initial speed: What is the maximum acceleration of the cells as they move toward each other and just barely touch? maximum acceleration: m/s m/s²

Two small spheres have the same mass and volume. One sphere has a charge of 4.00 micro Coulombs, and the other sphere has a charge of -1.00 micro Coulombs. If these two spheres are brought into brief contact with each other and then separated to a distance of 2.00 x 10^-1 metres, what is the electric force between them at this distance?

Rocket observations show that dust particles in Earth’s upper atmosphere are often electrically charged. (a) Find the distance separating two dust particles if each has a charge of +e and the Coulomb force between them has magnitude 1.00 × 10 −14 N. (b) Calculate the mass of one of the dust panicles if this Coulomb force would accelerate it at 4.50 × 10 8 m/s 2 . (In the upper atmosphere, effects from other nearby charges typically result in a small net force and acceleration.)

Two red blood cells each have a mass of 9.05 × 10-14 kg and carry a negative charge spread uniformly over their surfaces. The repulsion arising from the excess charge prevents the cells from clumping together. One cell carries -3.00 pC and the other –3.10 pC, and each cell can be modeled as a sphere 3.75 x 10- m in radius. If the red blood cells start very far apart and move directly toward each other with the same speed, what initial speed would each need so that they get close enough to just barely touch? Assume that there is no viscous drag from any of the surrounding liquid. initial speed: m/s What is the maximum acceleration of the cells as they move toward each other and just barely touch? maximum acceleration: m/s?

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Red blood cells can often be charged. Consider two red blood cells with the following charges: -24.6 pC and +51.6 pC. The red blood cells are 3.58 cm apart. a) What is the magnitude of the force on each red blood cell? b) The red blood cells come into contact with each other and then are separated by 3.58 cm. What magnitude of force does each of the red blood cells now experience?

two positively charged particles are 0.03 m apart. the first particle has a charge of 8.1 c, and the second a charge of 2.6 c. which charge would lead to the smallest increase in the electric force between the two particles?

Two tiny beads are 25 cm apart with no other charges or fields present. Bead A carries 10 uC of charge and bead B carries I uC. Which one of the following statements is true about the magnitudes of the electric forces on these beads? The force on A is 10 times the force on B. O The force on Bis 10 times the force on A. The force on Bis 100 times the force on A O The force on A is esactly equal to the force on B. The force on A is 100 times the force on B.

Two charged particles are a distance of 1.92 m from each other. One of the particles has a charge of 7.94 nC, and the other has a charge of 4.34 nC. (a) What is the magnitude (in N) of the electric force that one particle exerts on the other?