QUESTION 1 A positively charged Perspex rod is brought near a polystyrene ball which is
hanging as shown in the diagram 1. The ball is not charged initially. The ball is
attracted by the rod (diagram 2) and it touches the rod. Immediately after the
ball touches the rod, the ball moves away from the rod.
1
1.1.1 State the principle of conservation of charges
(2)
1.1.2 Make use of sketch number two. Sketch the charge distribution on the
ball as well as the rod If any and explain how the neutral ball is attracted by
the charged rod​

What happens to the light rays when they hit the specimen?

Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? your