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Name:____________________________________________ Period:_____________ Show work on this paper or a separate paper. Here is a formula for you: No Work= No Credit Abel playing with physics. 1. Why is Abel’s hair standing apart? A. Electrons have moved from the van der graaf to his hair strands giving each one a negative charge. B. Protons have moved from the van der graaf to his hair strands giving each one a positive charge. C. Well, shoot, I don’t really know and googling an answer isn’t really my thing. 2. What is the repulsive electrical force between two protons that are 8.5 nanometers apart? Answer: __________________________ 3. Two charged objects have a repulsive force of .035 N. If the charge of one of the objects is doubled, then what is the new force? Answer: __________________________ 4. Two charged objects have a repulsive force of .045 N. If the distance separating the objects is tripled, then what is the new force? Answer: __________________________ 5. Suppose that two spheres with the same magnitude of charge attract each other with a force of 0.75 N when placed a distance of 9 cm from each other. Determine the charge of each sphere. Sphere 1:___________ Sphere 2:__________ Due next class for a quiz grade. If turned in on time, this will be an optional test grade. YES NO Name:____________________________________________ Period:_____________ Show work on this paper or a separate paper. Here is a formula for you: No Work= No Credit A B C 6. Consider the three particles above. Particles A, B, and C have charges of 5 C, -7 C, and -6 C, respectively. The distance from A to B is 0.4 cm. The distance from B to C is also 0.4 cm. What is the net force (magnitude and direction) acting on particle B? Magnitude of force:______________________ Direction of force: 7. Left or Right Consider the three particles to the right. All three particles The top particle has a charge of 25 μC. The bottom left Particle has a charge of 15 μC. The bottom right particle has a Charge of 20 μC. What is the net force on the bottom left particle? Magnitude of force:___________ True Angle:_____________ Due next class for a quiz grade. If turned in on time, this will be an optional test grade. YES NO