Physics 011
Answers
of PQ#16


1. 

Electrons
carry a Review Section 162 in Giancoli. 


2. 

The units
of Coulomb's constants are Review Section 165 in Giancoli. 


3. 

The units
of permittivity are It is the reciprocal of Coulomb's constant. Review Section 165 in Giancoli. 


4. 

The unit
of a charge is the 


5. 

Which of
the following are the units of electric field? Review Section 167 in Giancoli. 


6. 

Two
charges Q_{1} and Q_{2} are separated by a distance D. If the
distance is doubled, the force is
Close but it will decrease. Review Section 165 in Giancoli. 


7. 

Two
charges Q_{1} and Q_{2} are separated by a distance D. If Q_{1}
is doubled, the force is 


8. 

Two
charges Q_{1} and Q_{2} are separated by a distance D. If Q_{1}
and Q_{2} are doubled, the force is This would be true if only one was doubled. Review Section 165 in Giancoli. 


9. 

Two
charges Q_{1} and Q_{2} are separated by a distance D. If
both Q_{1} and D are doubled, the force is Review Section 165 in Giancoli. 


10. 

Two
charges Q_{1} and Q_{2} are separated by a distance D. If Q_{1},
Q_{2} and D are all doubled, the force is Review Section 165 in Giancoli. 


11. 




12. 

Review Section 164 in Giancoli. 


13. 

Review Example 168 in Giancoli. 


14. 

Review Example 167 in Giancoli. 


15. 

Review Example 168 in Giancoli. 


16. 

Q_{1} is 5 times further away. Review Section 167 in Giancoli. 


17. 

They are not colinear. Review Example 168b in Giancoli. 


18. 

Review Example 168 in Giancoli. 


19. 




20. 




21. 

Review Section 169 in Giancoli. 


22. 

In
question 20 what would be the charge on the exterior surface (d)? 


23. 

Four
people tell you they have a negative charge of a certain value. Which one is
not telling the truth? Review Section 165 in Giancoli. 


24. 

What must
be the charge on each of two 100 kg spherical masses in order for the
electrical force to equal the gravitational force? Review Section 165 in Giancoli. 


25. 

How many
electrons would it take to make up a charge of minus one millionth of a
Coulomb? 