Question 1
a)
1) a circular coil with radius 20 cm is placed with it's plane parallel and between two straight
wires p and q. the coil carries current icoil = 0.5a . icoil is in clockwise direction when viewed
from left side. wire p is located 40 cm to the left of a circular coil and carries current ip = 0.2a
while wire q is located 80 cm to the right of the circular coil and carries current lo =0.6a. both
ip and iq are in the same directions into the paper. determine the resultant of magnetic field at
the centre of a circular coil from the top view.
[7 marks]

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

Hey student studies gravity using objects that have the same mass which two objects have the greatest gravitational force acting between them a. 100kg 1.0m 100kg b. 100kg 2.0m 100kg c. 100kg 2.0m 100kg big d. 100kg big 3.0m 100kg big

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.