Everything Science Grade 10

CHAPTER 25. EXERCISE SOLUTIONS 25.16

(4)Each piece will have a N and S pole

(5)they repel

(6)they attract

(11)the aurora (12)

Electrostatics ESAJC

End of chapter exercises ESAJD

(1)positive and negative

(2)rubbing two objects to-

gether

(3)repulsive, attractive

(4) (a)repulsive

(b)increase by factor

of 4

(5)D

(8)B

(9)polarisation

(12) 60 electrons

(13)− 376 × 10 −^17 C

(14) 376 × 10 −^17 C

(15) 7 , 28 × 10 −^18 C, 45 elec-

trons

(16)same as at start

(17)neutral, 0 electrons

Electric circuits ESAJE

End of chapter exercises ESAJF

(2)

(4) 1

(5)d

(6) (a)brighter

(b)A and B are the

same, C is off

(c)B

(7)a

(8) 4 , 25 V

(9) 17 V

(10) 7 V

(11) 1 , 4 V

(12)18Ω

(13) 7 ,5Ω

(14) 15 V

(15) 2 V

Chemistry: Chemical systems 491