The bank of solar cells used by the householder has an area of 8 m The enceng of the solar cells is Q. 15
Calculate the average maximum electrical energy available from the bank of solar
els each second in June
Show clearly how you work out your answer
Maximum energy
joules second
(3)

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

d) physical means can be used to separate the components of air.

b. false

explanation:

suppose a rock in free fall is dropped off a cliff. after falling for 5 seconds, its speed would not be 100 m/s.

moisture is lackin, and organic acids are scarce.