A cylindrical tank with volume 2451 cubic meters is to be constructed and insulated so that with water of 20° C and air of 0° C the heat loss through the cylindrical sides will be 4 Cal/m2 per hour and the heat loss through the circular roof will be 11 Cal/m2 per hour. There is no heat loss through the base.

What should the height of the tank be in order to minimize the total calories of heat loss?

Approximately how many more job openings are expected for security guards than pharmacy technicians? a. 2,000 b. 11,100 c. 21,000 d. 32,000

The length of each stair is 11 inches. what is the rise, r, for each stair? round to the nearest inch. 2 inches 7 inches 17 inches 24 inches

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below: