3) A direct current switch gear (big green electric box) has 637 C of charge at any given moment. How close are you to this box if you are experiencing and electric field intensity of
3.2 x 10-4 N/C?

not too sure thinking it will always be directed towards the centre of the earth. could be wrong not sure

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.