REVIEW/ASSESSMENT

Determine the divergence of the vector: V = i(x²) + j(-xy) + k(xyz) at the point (3,2,1)

• A. 9.00

• B. 11.00

• C. 13.00

• D. 7.00

A 2.5 in. diameter shaft is 2ft. long. Its maximum shear stress is 10,000 psi. What is the angular deflection in degrees?

• A. 0.96 degrees

• B. 0.45 degrees

• C. 0.78 degrees

• D. 0.56 degrees

The effect of aluminum in cast iron is to?

• A. increase hardness above 0.5%

• B. deoxidize molten cast iron

• C. affect the machinability, ductility, and shrinkage depending on form

• D. reduce hardness by combining with sulfur below 0.5%

The formula of Dinitrogen Pentoxide is:

What is the mass of electron traveling at half the speed of light?

• A. 1.05 x10^-30 kg

• B. 2.31 x10^-30 kg

• C. 1.56 x10^-31 kg

• D. 1.61 x10^-31 kg

Who was the first man to recognized the structure of electromagnetic waves, predicting that such waves exist simultaneously as high frequency electrical and electromagnetic waves of the same magnitude?

• A. Albert Einstein

• B. Oemor Sajor

• C. Werner Heisenberg

• D. James Clerk Maxwell

A piston-cylinder system contains a gas which expands under a constant pressure of 1200 lbf/ft². If the piston is displaced 12in. during the process, and the piston diameter is 24in., what is the work done in ft-lb by the gas on the piston?

Which of the following equations is the definition of enthalpy?

• A. h = U + PV

• D. h = U - PV

A sphere of radius 5x10^-2 cm and density of 1.1 g/cc falls at a constant velocity through a liquid of density 1.0 g/cc and viscosity of 1.00 poise. What is the velocity of the falling sphere in cm/s?

• A. 0.4

• B. -0.744

• C. -0.0544

• D. 1.53

When will an amount be tripled with an interest of 11.56%?