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]

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

The table below shows the acceleration of gravity on different bodies in the solar system. on which body would a 10 kg lamp has the most gravitational potential energy when lifted to a height of 2 m? a. earth b. mars c. neptune d. uranus

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?