What direction should his boat be headed
A man can row a boat at a speed of 6.00 km/h in still water. if he is crossing a river where the current is 3.00 km/h in what direction should his boat be headed if he wants to reach a point directly opposite his starting point?
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A plate produces a diffraction pattern with a central bright maximum, and minima at 3, 6, and 9 cm from the center of this maximum. Is this a double-slit plate or a single-slit plate?
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A flat-bottomed barge, 25 m long and 10 m wide, submerged to a depth of 1.5 m, is to be pushed up a river at a rate of 8.6 km/hr. Calculate the power needed to overcome skin friction (in kW) if the temperature of the water is 15oC.
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