Knowing: ε=V_4/V_1 =10, ρ=V_2/V_1 =2, and γ=1.4 for the cycle
represented in Figure 2, calculate the...
Knowing: ε=V_4/V_1 =10, ρ=V_2/V_1 =2, and γ=1.4 for the cycle
represented in Figure 2, calculate the Diesel cycle efficiency and
compare the value with the Carnot efficiency. Draw the V-T, and P-T
cycle diagrams.
If (2 * 10^-1) the mole of diatomic ideal gas ( γ = 1.4)
experiences a carnot cycle with temperatures of 22oC and 25oC. The
initial pressure is Pa = 5x105Pa and during expansion
isothermally at a higher temperature the volume increases 1.5
times.
a) Determine the pressure and volume at points a, b, c and
draw the graph
b) Determine Q, W, and ΔU for each step and for the entire
cycle
c) Determine efficiency directly from results (b)
1) A gas turbine operates on an ideal Joule cycle using air (γ =
1.4; R = 0.287 kJ/kg K) as working fluid. Air enters the compressor
at temperature of 27◦C and pressure of 1.25 bar and is compressed
to 7.6 bar. When the maximum cycle temperature is limited to 800
oC, calculate,
(i) the thermal efficiency and work ratio of the cycle
(ii) the temperature of air exiting the turbine and the change
in specific entropy of turbine process...
1.Calculate the [H3O+] value of each aqueous solution.
aspirin with [OH−]=1.4×10−11M.
seawater with [OH−]=1.5×10−6M
2. To calculate pH and use it as a measure of
acidity.
What is the pH of an aqueous solution with [H3O+] =
4×10−13M ?
Carbonated cola is more acidic than coffee or even orange juice
because cola contains phosphoric acid.
What is the molar concentration of H3O+ in a cola that has a pH
of 3.120?
1- Calculate the osmolar concentration, in terms of
milliosmoles, represented by 1 liter of a 10% w/v solution of
anhydrous dextrose (Z = 180) in water. Answer: 555.56 mOsmol/L
Calculate the percent ionization of 0.135 M lactic acid
(Ka=1.4×10−4). Calculate the percent ionization of 0.135
M lactic acid in a solution containing
8.0×10−3 M sodium lactate.
How many grams of dry NH4Cl need to be added to 2.50 L of a
0.800 M solution of ammonia, NH3, to prepare a buffer
solution that has a pH of 8.62? Kb for ammonia is
1.8×10−5.
Vectors p1 = [10 2] and p2 = [2 15] are represented in
o1x1y1 coordinate frame. Translate
o1x1y1 by t = [30 1]T
and rotate by 45◦ to obtain
o2x2y2. Is the dot product of
p1 and p2 same in
o1x1y1 and
o2x2y2?
I believe o1x1y1 and
o2x2y2 are the pair of vectors
before and after the translation and rotation
A liquid (ρ = 1000 kg/m3; μ = 2 × 10–2 N ∙ s/m2; v = 2 × 10–5 m2/s) flows tangentially past a flat plate with total length of 4 m (parallel to the flow direction), a velocity of 1 m/s, and a width of 1.5 m. What is the skin friction drag (shear force) on one side of the plate?
2 10 6 10 10 4 5 4 5 8
a) Calculate the range.
b) Calculate the variance.
(Round to two decimal places as needed.)
c) Calculate the standard deviation.
(Round to two decimal places as needed.)
13 28 30 17 24 9 44 21
a)Determine the 20th percentile.
b)Determine the 30th percentile.
c)Determine the 70th percentile.