3. Pete needs to be at work for 10.00am. He leaves his house at 7.00am and drives to the gym which is 12.5 miles away. Pete spends 1 hour in the gym then drives 30minutes the remaining

9 miles to work.

a. What average speed in, miles per hour, must Pete drive at to ensure he is not late for

work?(3 marks)

I

magnified images possible images can be real = projected onto a screen

d. air pressure decreases as altitude increases.

energy stored in the capacitor= 9.72 x 10⁻⁴ j

explanation:

the energy stored in the capacitor is given by

e= 1/2 c v²

e= energy stored

c= capacitance= 1.5 µc= 1.5 x 10⁻⁶f

v= potential difference=36 v

so energy stored= e= 1/2 (1.5 x 10⁻⁶) (36)²

energy stored= 9.72 x 10⁻⁴j