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S cience. Starters. Tues , Oct 11 . Students are gathering materials and building an electrical circuit. Which material will allow electricity to flow between the battery and the light bulb ? A copper wire B wooden rod C cotton string D rubber tube. A.

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slide1

Science

Starters

Tues, Oct 11

slide2

Students are gathering materials and building an electrical circuit. Which material will allow electricity to flow between the battery and the light bulb?

A copper wire

B wooden rod

C cotton string

D rubber tube

slide4

In one hour, traveling at 30 mph, a car climbs to the top of a hill. When the car reaches the top, the driver remembers that she left her field guide to mountain life back home. She immediately turns around and rives downhill at 60 mph. Assuming that she spent no time at the top, what was her average speed?

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One hour at 30 mph to top is 30 miles. At 60 mph shell cover that distance in only 30 minutes.

The average speed is the

total distance/total time = 60/1.5 hours or 40 mph