URGENT A boy can swim at a maximum velocity of 2.4 m/s. If he swims north as fast as he can across a river that flows east at 3.8 m/s, what will be his resultant velocity? Give a complete answer!

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Aforce of 34n stretches a very light ideal spring 0.73 m from equilibrium, what is the force constant (spring constant) of the spring? (a) 47n/m (b) 38n/m (c) 53n/m (d) 25n/m

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.