Name:____________________________________________
Period:_____________
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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