If the resonant frequency is 1 MHz and Q = 50, f1 = ________ and f2 = ________
A) 0.99 MHz, 1.01 MHz B) 0.98 MHz, 1.01 MHz
C) 0.99 MHz, 1.02 MHz D) 0.98 MHz, 1.02 MHz
A
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A tremmie is used during the drilling of a pier to
A) prevent the caving in of the soil. B) seal the pier hole against percolation of water. C) bring up the groundwater that collects at the bottom of the pier. D) bring the cut soil out of the hole. E) none of the above.
Due to the risk of runaways, what should be used on all long vertical cable pulls?
a. Constant pressure b. Basket grips c. Extra tape d. Braking systems
A continuous load is one that operates for ___________________ hours or more.
Fill in the blank(s) with the appropriate word(s).
A rigid vessel initially contains 100 moles of an ideal gas at T = 353.15 K and P = 0.1 MPa. The ideal gas has CP* = (7/2)R. Heat is added until the pressure of the gas is P = 0.3 MPa. How much heat was added?
A. 2.1 MJ B. No heat has been added because only pressure increases and ideal gas enthalpies are a function of temperature only. C. 466. kJ D. 1.5 MJ E. Insufficient information to solve