PROBLEM 3.92 The solid circular shaft shown is made of a steel that is assumed to be elastoplastic with ?Y ? 145 MPa. Determine the magnitude T of the applied torques when the plastic zone is (a) 16 mm deep, (b) 24 mm deep.
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A problem with using doorways as ventilation openings is that ______.
a. this technique compromises personnel entry & exit b. it is more difficult to control the ventilation process c. the large opening can admit too much air d. this technique tends to produce churning
A male chicken that is less than one year old is a:
A. pullet B. capon C. hen D. cockerel
Technician A says to fill gas containers completely full in order to reduce vapor formation. Technician B says that all gasoline containers should be red in color. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
An initially evacuated tank is to be filled with CO2 gas from a supply line which contains CO2 at 150 psia and 70oF. The tank volume is 10 gal, and the tank is to be filled until the pressure inside the tank is 120 psia. Determine the amount of heat transfer required if the temperature of the CO2 in the tank is to be 80oF.
State i: Inlet (Supply Line); State 1: Initial State; State 2: Final State Given: CO2; Ti = 70oF; Pi = 150 psia; V = 10 gal = 1.34 ft3; P2 = 120 psia; T2 = 80oF Assume: P1 = 0; m1 = 0 (initially evacuated). Also, as no information is given and these terms are unlikely to be significant, W = 0, and kinetic and potential energy can be neglected. No flow out of the tank. CO2 is an ideal gas with variable specific heats.