A flat plate of length = 3 m and width = 2 m is placed on the ground. Air is blowing over the plate at a speed of 62 m/s. Take the density of air to be 1.2 kg/m3. a) Find the skin friction drag on the plate if the flow is entirely laminar. Answer: N (round to one decimal place) b) Find the skin friction drag on the plate if the flow is entirely turbulent. Answer: N (round to one decimal place)

A nozzle duct is placed in a room at standard conditions. Some of the exit conditions are known: = 0.24, = 280 K, and  = 1 m2. A differential pressure gauge -as shown- is measuring the difference in pressure between the inlet and exit to be 3.721 kPa. Find: (a) The inlet’s cross-sectional area. Answer: m2 (round to one decimal place) (b)  The Mach number at the inlet. Answer: (round to two decimal places)

A Cessna Skylane piston-prop general aviation aircraft is in cruise flight. The pitot pressure measured by the aircraft’s pitot tube is 76.494 kPa. The equivalent airspeed shown on the speed gauge is 130 kt (1 kt = 0.514 m/s). At what altitude is the aircraft flying? Answer: m 

Why does a turbulent boundary layer result in a higher wall/skin shear stress than a laminar one?

A key reason why ncRNAs can carry out such a diverse array of functions is because they can bind to different types of molecules, such as DNA, other RNAs, and proteins.

Spontaneous mutations can arise by three types of chemical changes: 1.Depurination 2.Deamination 3.Tautomeric shift

Frameshift mutations involve the addition or deletion of a number of nucleotides that is not divisible by four.

Gene mutations outside of coding sequences can affect gene expression and phenotype. Mutations in the core promoter can change levels of gene transcription.

BONUS QUESTION! Students that answer this question correctly will have 1 point added to their grade.   SIRS and sepsis refer to conditions of _________________ resulting from either extensive tissue damage (in the case of SIRS) or uncontrolled infection (in the case of sepsis).

How many integers from 20 through 79 (inclusive) have distinct digits?