The power output of a water turbine is given by P = pgQh, where P is power,p is density of water (kg/m3), g is acceleration due to gravity (m/s2), Q is water flow rate (m3/s), and h is the available water head (m). What is the appropriate unit for P?
What will be an ideal response?
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A. The manufacturer will send a factory representative to the dealer to troubleshoot the problems B. The manufacturer will offer an incentive program to the dealer C. The service manager will be fired D. The owner will sell the business
What structure carries water and nutrients absorbed by the roots to the leaves?
A) xylem B) phloem C) flax D) nodes
Even though a fan arrangement is viewed from the front, why should you worry about the back?
What will be an ideal response?
A certain chemical process is run 10 times at a temperature of 65°C and 10 times at a temperature of 80°C. The yield at each run was measured as a percent of a theoretical maximum. The data are presented in the following table.
a. For each temperature, estimate the mean yield and find the uncertainty in the estimate.
b. Estimate the difference between the mean yields at the two temperatures, and find the uncertainty in the estimate.