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1. Air undergoes a polytropic expansion in a piston cylinder assembly. The initial temperature of the air is 800 K and the pressure is 2 MPa. The initial volume is 0.1 L in the cylinder. The final volume of the cylinder is 0.8 L. The final pressure is 100 kPa. a. What is the polytropic coefficient, n? b. What is the final temperature in K? c. What is the work done by the air on the piston cylinder assembly during this process in J? d. What is the heat transfer that takes place during this process in J? 1 V

The standard atmosphere in meters of gasoline (Y = 6660 N/m3) is nearest take Patm= 101300 N/m2 * O 24.9 m O 15.2 m O 18.3 m O 21.2 m A cubic meter of a liquid has a weight of 9800 N at a location where g = 9.79 m/s2. What is its weight at a location where g 9.83 m/s2? * O 9780 N O 9840 N O 9820 N O 9800 N The pressure at a point where the gage pressure is 70 cm of water is nearest take Patm =100 KPa. * O 169 kPa O 69 kPa O 107 kPa O 30 kPa Calculate the weight of a body that occupies 200 m3 if its specific volume is 10 m3/kg. * O 132 N O 196 N O 20 N O 921 N 10-kg body falls from rest, with negligible interaction with its Surroundings (no friction). Determine its velocity after it falls 5 m. * O 9.9 m/s 19.8 m/s O 12.8 m/s O 15.2 m/s D

The channel of 3 m wide at the entrance has the velocity of V. The downstream velocity profile is given by u = 4y – 2y², where u is in m/s and y is in meters. Determine the value of V.

Find the value of M1, M2, and what is the percent error if the true value is 149 grams?

Q 8 please

196B/s.110. The coefficint of friction is 0.43 A 3.0 kilogram block is sliding down a 25° incline at a constant speed. 1 0.44 0.38 0.33 0.47 The moment reaction at B is 800N 0.16m + 203 Nm - 175 Nm + 185 Nm 17 Ma 60 deg 0.20m O if A ۱۰:۰۱ ص M

A shaft carrying a V-belt pulley and a gear is shown in the attached image. Pulley A with a diameter of d = 150 mm receives power from a motor through a belt with the tensions shown. Belt tension T₁ = 150 N and tension T2 = 600 N. Power is transmitted through the shaft and delivered to gear B, which drives an additional gear (not shown) at a pressure angle of 20 deg relative to the z axis. The gear at B has a pitch diameter of dB = 200 mm. The rotating shaft is simply-supported by frictionless bearings at points O and C. The shaft has a nominal diameter of 25 mm, and all dimensions are in units of millimeters. (a) Determine the value of the force W that acts on gear B. (b) Find the magnitudes of the bearing reaction forces. (c) Draw shear force and bending moment diagrams for both the horizontal and vertical planes. (d) At the point of maximum bending moment, determine the bending stress and the torsional shear stress. (e) At the point of maximum bending moment, determine the principal…

Problem #2: A velocity distribution is given as V = Please calculate the work flux (Iv) associated with molecular motions. -bx8,-byô, + bz8, where b is a constant and b‡0.

The units for kinetic energy change in the following equation is m^2/s^2. To convert this to kJ/kg...