Aspherical pressure tank is made of 1050 cold-drawn steel (sy = 84 ksi, su = 100 ksi). the tank has a 40'' inner diameter, has a 1/2'' wall thickness, and is pressurized cyclically between 200 psi and 1000 psi.
1. using the goodman fatigue criterion for infinite life, find the overall safety factor against fatigue failure.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Abarometer contains mercury with a density of 13600 kg/m3. atmospheric conditions are 95.8 kpa and 20 °c at 20 °c, the vapor pressure of the mercury is 0.000173 kpa. the column of mercury will rise to a height of most nearly. select one: a)- 0.38 m b)- 0.82 m c)- 0.48 m d)- 0.72 m

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.