list five items you would like to buy. How does the price of each item affect your decision to allocate your scarce resources your money and your time ? Describe the way in which prices act as signals to help you make your decisions.

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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measuring things 1 litre of water

i don't understand. explain it clearly

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.