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2. Question Details Red blood cells can often be charged. Consider two red blood cells with the following charges: -24.4 pC and +52.4 pC. The red blood cells are 1.85 cm apart. (1 pC = 1 x 10$^{-12}$ C.) (a) What is the magnitude of the force on each red blood cell? $3.362 \times 10^{-5}$ N Are the red blood cells attracted or repulsed by each other? attracted repulsed (b) The red blood cells come into contact with each other and then are separated by 1.85 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? attracted repulsed 3. Question Details SerCPWALI 15.WA.023.Tutorial. [3959484] Three identical metal spheres are hung from a ceiling on rigid non-conducting rods. Sphere 1, sphere 2, and sphere 3 have charges 35 $\mu$C, -50 $\mu$C, and 54 $\mu$C, respectively. Each sphere is separated by 11 cm. 1 2 3 (a) What is the net electric force on the middle sphere due to spheres 1 and 3? (Enter the magnitude only.) N (b) What is the direction of the net electric force? up down left right no direction (zero magnitude)

          2.
Question Details
Red blood cells can often be charged. Consider two red blood cells with the following charges: -24.4 pC and +52.4 pC. The
red blood cells are 1.85 cm apart. (1 pC = 1 x 10$^{-12}$ C.)
(a) What is the magnitude of the force on each red blood cell?
$3.362 \times 10^{-5}$ N
Are the red blood cells attracted or repulsed by each other?
attracted
repulsed
(b) The red blood cells come into contact with each other and then are separated by 1.85 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?
attracted
repulsed
3.
Question Details
SerCPWALI 15.WA.023.Tutorial. [3959484]
Three identical metal spheres are hung from a ceiling on rigid non-conducting rods. Sphere 1, sphere 2, and sphere 3 have
charges 35 $\mu$C, -50 $\mu$C, and 54 $\mu$C, respectively. Each sphere is separated by 11 cm.
1
2
3
(a) What is the net electric force on the middle sphere due to spheres 1 and 3? (Enter the magnitude only.)
N
(b) What is the direction of the net electric force?
up
down
left
right
no direction (zero magnitude)

2.
Question Details
Red blood cells can often be charged. Consider two red blood cells with the following charges: -24.4 pC and +52.4 pC. The
red blood cells are 1.85 cm apart. (1 pC = 1 x 10^-12 C.)
(a) What is the magnitude of the force on each red blood cell?
3.362 × 10^-5 N
Are the red blood cells attracted or repulsed by each other?
attracted
repulsed
(b) The red blood cells come into contact with each other and then are separated by 1.85 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?
attracted
repulsed
3.
Question Details
SerCPWALI 15.WA.023.Tutorial. [3959484]
Three identical metal spheres are hung from a ceiling on rigid non-conducting rods. Sphere 1, sphere 2, and sphere 3 have
charges 35 μC, -50 μC, and 54 μC, respectively. Each sphere is separated by 11 cm.
1
2
3
(a) What is the net electric force on the middle sphere due to spheres 1 and 3? (Enter the magnitude only.)
N
(b) What is the direction of the net electric force?
up
down
left
right
no direction (zero magnitude)

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