What can iron filings sprinkled on a piece of paper demonstrate? a the clockwise motion of the magnetic field b the counter clock wise motion of the magnetic fields c the pattern of the magnetic fields lines d the distortion of the magnetic field by paper,

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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the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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