Two children, ferdinand and isabella, are playing with a waterhose on a sunny summer day. isabella is holding the hose in herhand 1.0 meters above the ground and is trying to spray ferdinand, who is standing 10.0 meters away. i know so far that she cannotspray ferdinand at the current position and with the curreentspeed of spray. i got stuck inthe following question:
to increase the range of the water, isabellaplaces her thumb on the hose hole and partially covers it. assuming that the flow remains steady, what fraction f of the cross-sectional area of the hose hole does shehave to cover to be able to spray her friend?
assume that the cross section of the hoseopening is circular with a radius of 1.5 centimeters.
Answers: 3
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Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?
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Two children, ferdinand and isabella, are playing with a waterhose on a sunny summer day. isabella i...
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