The dry and wet-bulb temperatures of atmospheric air at 95 kPa are 25C and 20C, respectively. Determine (a) the specific humidity, (b) the relative humidity), and (c) the enthalpy of the air in kj/kg dry air.

Design a straight ended helical torsion spring for a static load 200 N-m at a deflection of 45 deg with a safety factor of 1.8. Specify all parameters necessart to manufacture the spring state all assumntions. You make the following design choices:

*Use unpeened oil tempered wire with 40mm long, straight ends. The coil is loaded to close it

* Design safety factory Nyd=1.8

*spring index C=11

*Yield Strength Factor K=0.85

*length of the ends L1=40 mm=L2

*Material choice = ASTMA299wire

The data listed below are claimed for a powercycle operatingbetween reservoirs at 527_C and 127_C. For each case,determine if any principles of thermodynamics would be violated.

(a) QH = 700 kJ, Wcycle = 400 kJ, QC = 300 kJ.

(b) QH = 640 kJ, Wcycle = 300 kJ, QC = 240 kJ.

(c) QH = 640 kJ, Wcycle = 400 kJ, QC = 300 kJ.

1. What would be the maximum concentration of Toluene (PEL 200 ppm) that an atmosphere could contain if your air purifying respirator has been tested with the following results: mask concentration of nontoxic gas 10 ppm.

2. A respirator cartridge that has an orange stripe on a black label would indicate use in what situation?

please type answer. some are written on paper and are hard to read

Problem 3: Fit the following data with a parabola. Use both Newtonian and Lagrangian interpolating polynomials. x 0.75 2 3 4 6 8 8.5 y 1.2 1.95 2 2.4 2.4 2.7 2.6

1. If 0.05kg of a gas occupying a volume of 0.03m3 at 1.025 bar is compressed reversibly until the pressure is 6.15 bar. Calculate the final temperature, the work done on the gas and the heat flow to or from the cylinder wall when;
a. the process is according to a law PV^1.4=K 
b. the process is isothermal
c. the process takes place in a perfectly thermally insulated cylinder.

-What type(s) of effects are the radiation protection standards trying to prevent?

type the answer please

A certain amount of viscous fluid is placed onto a flat surface. Determine the pi terms that describe the fluid spreading out over the plate as time progresses. For example, these pi terms would describe honey spreading out over a countertop after a drop of it was spilled, or oil spreading on a garage floor after leaking out of a container.

When a safeguard is said to be "muted", what does that means?

Discuss the testing procedures for a fibre composite material, showing all parties involved, from the beginning until obtaining final test report. Discuss also the importance and need of obtaining such test results and not to rely solely on the results of theoretical evaluation. Support your discussion with appropriate literature

Air (cp = 1.0 kJ/kgK) enters an air conditioning system at 40C with a mass flow rate of 1.5 kg/s. The air is cooled by exchanging heat with a stream of R-134a refrigerant that enters the heat exchanger at -8C and 20% quality, and exits with 100% quality. If 25 kW of heat is transferred out of the air, determine: (40 pts) i) Mass flowrate of R-134a (kg/hr) ii) Exit temperature of air (C) iii) Exit pressure of R-134a (kPa)

3. A CNC Lathe is controlled by a 151 step motor which is used to drive a lead screw with 0.25 inch pitch.

(i) What is the precision or minimum distance a carriage on the lead screw can be moved.

4 Decimals, Unit: inch

(ii) To move a distance of 4.5 inches how many pulses are transmitted to the motor.

(iii) If the specification is to move the carriage at the rate of 2.2 inches/minute at what frequency should the pulses be transmitted.

Unit: Hertz

8. Consider an airplane whose takeoff speed is 220 km/h and that takes 15 s to take off at sea level. For an airport at an elevation of 1600 m (such as Denver), determine (a) the takeoff speed, (b) the takeoff time, and (c) the addition al runway length required for this airplane. Assume constant acceleration for both cases.

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5.

Define inorganic glass ?

Explain main glass formers, conditional glass formers,

intermediate oxides, and network modifiers? In a viscosity versus temperature profile,

can you please define strain point, annealing point, glass transition temperature, softening

point, and working p

oint

?

5. Consider an airplane with wingspan 40 ft, wing area 250 ft2 , and weight 12,000 lb. Assume that the Oswald efficiency factor is 0.9. The airplane is flying at a velocity of 250 mph at a standard altitude of 5000 ft. Calculate the airplane drag due to lift.