POE 1. Show the equation with substitution to determine if this truss static
determinate? (2 Points)
Equation:
2. What is the reaction force at joint A in the X direction?
(2 Points)
3. Solve for the external forces using static equilibrium formula for point Cy
(hint: EM=0) (M=FxD).
(3 Points)
4. What is the external force at RFAy.
(3 Points)
5. Draw truss in step 5 showing all external forces and angles. (10points)

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature

Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?