10. 11.
KA) 8.85 x 10-12c?N-'m-2
(B) 8.85 x 10-12 Nm?c-2 (C) 8.85 x 10-2NmC (D) 8.85 x 10
The electrostatic force of repulsion between two electrons at a distance 1m is:
(Rwp 2015)
(A) 2.3 x 10-24 N
(B) 2.3 x 10-20 N
VC) 2.3 x 10-28 N
(D) 2.3 x 10-30 N
Two charges 1 uC and 5 uC separated by 20 cm, the ratio of electrical forces acting on them will be: (Lhr 2016 G II)
(A) 1.2
(B) 1:5
C) 1:1
(D) 5:1
(Lhr 2018 G II, Grw 2017)
1

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !