1. A cylindrical water tank with depth of 4 feet and radius of 8 feet has one circular base on the ground. If the tank is full, how much work (in ft-lbs) is required to pump all the water in the tank 5 feet above the top of the tank (9 feet above the ground). Note: Water weighs 62.4 lbs/ft^3. [Answer: 351,295 ft-lbs] [Hint: Follow Example 4, but notice the radius is a constant 8 in this question.]

A classroom of 30 students has an air conditioning system that moves 450 cubic feet of air per minute. Determine the rate of ventilation per child.

Please answer fully and on paper I keep getting the wrong answer when submitting questions so please double check. Thanks a ton ill make sure to thumbs up multiple times.

Please answer fully and on paper I keep getting the wrong answer when submitting questions so please double check. Thanks a ton ill make sure to thumbs up multiple times.

The physician has ordered cephalexin 250 mg capsule orally every 6 hours for 7 days.  The first dose is September 4th at 18:00 hours.  When is the last scheduled dose?  Identify date and time.

Please answer fully and on paper I keep getting the wrong answer when submitting questions so please double check. Thanks a ton ill make sure to thumbs up multiple times.