In Fig. 21-41, three identical conducting spheres form an equilateral triangle of side length d = 20.0 cm. The sphere radii are much smaller than d , and the sphere charges are q A = −2.00 nC, q B = −4.00 nC, and q C = +8.00 nC. (a) What is the magnitude of the electrostatic force between spheres A and C ? The following steps are then taken: A and B are connected by a thin wire and then disconnected; B is grounded by the wire, and the wire is then removed; B and C are connected by the wire and then disconnected. What now are the magnitudes of the electrostatic force (b) between spheres A and C and (c) between spheres B and C ? Figure 21-41 Problem 48.
In Fig. 21-41, three identical conducting spheres form an equilateral triangle of side length d = 20.0 cm. The sphere radii are much smaller than d , and the sphere charges are q A = −2.00 nC, q B = −4.00 nC, and q C = +8.00 nC. (a) What is the magnitude of the electrostatic force between spheres A and C ? The following steps are then taken: A and B are connected by a thin wire and then disconnected; B is grounded by the wire, and the wire is then removed; B and C are connected by the wire and then disconnected. What now are the magnitudes of the electrostatic force (b) between spheres A and C and (c) between spheres B and C ? Figure 21-41 Problem 48.
In Fig. 21-41, three identical conducting spheres form an equilateral triangle of side length d = 20.0 cm. The sphere radii are much smaller than d, and the sphere charges are qA = −2.00 nC, qB = −4.00 nC, and qC = +8.00 nC. (a) What is the magnitude of the electrostatic force between spheres A and C? The following steps are then taken: A and B are connected by a thin wire and then disconnected; B is grounded by the wire, and the wire is then removed; B and C are connected by the wire and then disconnected. What now are the magnitudes of the electrostatic force (b) between spheres A and C and (c) between spheres B and C?
What is the force (in N) on the 2.0 μC charge placed at the center of the square shown below? (Express your answer in vector form.)
5.0 με
4.0 με
2.0 με
+
1.0 m
1.0 m
-40 με
2.0 μC
What is the force (in N) on the 5.4 µC charge shown below? (Express your answer in vector form.) −3.1 µC5.4 µC9.2 µC6.4 µC
An ideal gas in a sealed container starts out at a pressure of 8900 N/m2 and a volume of 5.7 m3. If the gas expands to a volume of 6.3 m3 while the pressure is held constant (still at 8900 N/m2), how much work is done by the gas? Give your answer as the number of Joules.
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