Glycerin, with a viscosity of 1.50 Ns/m2, is flowing with an average speed of 1.20 m/s through a tube that has a radius of 5.00 mm and is 25.0 cm long. What is the drop in pressure?
A) 144 kPa
B) 45.8 kPa
C) 72.0 kPa
D) 76.3 kPa
E) 129 kPa
A
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A 5.00 kg mass is located at (2.00 m, 0.00 m, 3.00 m) and a 2.00 kg mass is located at (0.00 m, 4.00 m, –2.00 m). The center of gravity of the system of masses is
A. (10/7m, 8/7m, 11/7m). B. (11/7m, 7/7m, 8/7m). C. (7/7m, 10/7m, 11/7m). D. (10/7m, 7/7m, 8/7m). E. (8/7m, 7/7m, 10/7m).
Food is cooked faster in a pressure cooker due to its
A) greater rate of bubble formation in the water. B) higher thermal energy. C) higher temperature. D) none of the above
Carbon dioxide and water molecules in the atmosphere will absorb:
a. infrared light. c. ultraviolet light. b. visible light. d. radio waves.
Resistance and Resistivity: The resistivity of the material of a wire is 1.76 × 10-8 ? ? m. If the diameter of the wire is 2.00 mm and its length is 2.00 m, what is its resistance?
A. 112 ? B. 11.2 ? C. 1.12 ? D. 0.112 ? E. 0.0112 ?