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Water is poured into a cylindrical container that has a leak at the bottom, where h...

Water is poured into a cylindrical container that has a leak at the bottom, where h = 15.0 cm and r = 2.50 cm. The mass m of the water is given as a function of time ?(?) = 2.70? ^2 − 0.120? ^3 , where m is in grams, t in seconds, and 0 ≤ ? ≤ 22.5. (a) What is that greatest mass in kg? (b) What is the height y (in meters) of the water when the mass is greatest? (c) what is the number of water molecules when the mass is greatest? (The atomic mass for H is 1 u and for oxygen is 16 u, where u=1.66 × 10-27 kg), (water density is 1.00 g/cm3 )

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