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Q. A 93-{rm kg} water skier floating in a lake is pulled from rest to a speed of 12 m/s in a distance of 26 m. What is the net force exerted on the skier, assuming his acceleration is constant?

Q. A small immersion heater is rated at 348 W. Estimate how long it will take to heat a cup of soup (assume this is 250 mL of water) from 20°C to 50°C.

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