Which is an example of an ornamental grass?
A) Clematis
B) Switchgrass
C) Sedum
D) Snowdrop
B
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A pipe operates at steady-state, steady-flow conditions. Steam enters the pipe at 300°C and 250 kPa, and exits at 250°C and 200 kPa. The volumetric flow rate of the steam entering the pipe is 1.2 m3/s. Assume that there are no work interactions.
(a) Determine the heat transfer rate to or from the pipe. (b) Using your equations, plot the rate of heat transfer for the same inlet conditions and outlet pressure, but for outlet temperatures varying from 150°C to 350°C. Given: V?1 = 1.2 m3/s; T1 = 300°C; P1 = 250 kPa; T2 = 250°C; P2 = 200 kPa Steady-state, steady-flow; (Inlet = State 1; Outlet = State 2) Assume: W?= 0 ; neglect changes in kinetic and potential energy What will be an ideal response?
A solar-powered personal aircraft with VTOL capability has been under development for the past 30 years by a group of engineers and physicists. SPPAV, as the plane will be termed, is expected to be available for its final test flight in exactly 3 years from now. Over the previous 30 years, a total of $100 million has been spent in its development. Assuming the $100 million was spent in an equal amount each year, and assuming an interest rate of 10%, determine the following: (a) The value of the total investment now, after the 30 years. (b) The value of the total investment at the expected time of the final test flight in three more years, assuming the same amount is spent for each of the next three years. (c) The value of the total investment at the expected time of the final test
flight in three more years, assuming that twice the amount is spent for each of the next 3 years than that for the previous 30 years. What will be an ideal response?
The exhibitor's show clothes must usually be white at dairy shows.
Answer the following statement true (T) or false (F)
Under the new U.S. federal hours of service, the rules for restart require all of the following EXCEPT:
A. any restart period must include two consecutive nighttime periods B. any restart period must be at least 34 consecutive hours long C. drivers may use the restart provision only once in any seven calendar days D. nighttime periods include the time between midnight and 6:00 a.m.