A structure is made of 2014 aluminum alloy with a tensile yield strength of 276 MPa. The critical point in the structure experiences the state of stress below. Calculate the factor of safety according to the Tresca and von Mises theories. a. σx= 50MPa
b. σy= 0
c. σz= 30 MPa
d. τxy= 20 MPa
e. τyz= 60 MPa
f. τzx= 75 MPa

Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79