A man asks his friend to meet him at the airport at 3.00pm,to drive him to an appointment.he catches an earlier plane,and arrives at the airport at 2.00pm.he decides to start walking and is picked up en route by his friend.he arrives twenty minutes early for his appointment.how long did he walk?

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How do whales sink or rise at their own will ?

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Why does the pilot tilt the outer wing of the airplane inward while taking a turn?

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a car is travelling at 72kmph, and if that car slows down to 60kmph it takes an extra 1 hour to cover that same distance. at 72kmph, how long did it take for the car to cover that distance?

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Explain what is the difference between diffraction and interference?

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Explain the Heat Vaporisation?

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How are amps and watts related?

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Explain what is neutral buoyancy?

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Explain the Heterogenous ?

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What is ultrasonic sound?

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What is reverberation?

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Why dies a cricket player lower his hands, while catching the ball ?

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