A pure substance A having density of 800 kg/m^3 (56 lbm/ft^3) is diffusing into a binary mixture of A and B. If the velocity of A is 4 cm/hr (1.2 in/hr) into the mixture and the velocity of B is 3.6 cm/hr out of the mixture, what is the total bulk velocity? Assume that the density of pure B is 900 kg/m3 (63 lbm/ft^3) and that the mixture density is 890 kg/m^3 (61 lbm/ft^3).
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A 2000 kg car is traveling on a banked curved icy road. The road is banked at an angle of 12.0 degrees and has a radius of curvature of 500 m. The velocity of the car necessary to travel on the icy road without sliding is
A. 32.3 m/s. B. 40.5 m/s. C. 42.8 m/s. D. 49.5 m/s. E. 50.2 m/s.
Mercury's surface, upon casual visual observation, most resembles what other surface in our solar system?
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The Bohr theory does not predict that:
a. the approximate radius of a hydrogen atom is 5.3 × 10^-11 m. b. hydrogen atoms will give off the lines from the series ending in the n = 2 state. c. the ground state of hydrogen is spherically symmetric. d. it requires 13.6 eV to ionize hydrogen.
The most common rock forming minerals are composed of predominantly eight elements. These minerals are the
A) silicates, carbonates, oxides, sulfides, and sulfates. B) silicates, sulfides, and oxides. C) silicons, borates, oxides, sulfides, and carbonates. D) sulfates, oxides, and carbonates.