A gas is placed in a container, which is immersed in an ice-water mixture as shown below
2
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Resistance and Resistivity: You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor. If you want to achieve the largest possible resistance, you should attach the leads to the opposite faces that measure
A. 3 cm × 5 cm. B. 3 cm × 8 cm. C. 5 cm × 8 cm. D. Any pair of faces produces the same resistance.
A heavy ball hangs by a string, with a second string attached to its bottom. A slow pull on the bottom string breaks the
A) top string. B) bottom string. C) top or bottom string equally.
A gasoline engine absorbs 2500 J of heat and performs 1000 J of mechanical work in each cycle. The amount of heat expelled in each cycle is
A. 1000 J B. 1500 J C. 2000 J D. 500 J E. 3000 J
In weight-critical designs, the stiffness requirement for the relative merit uses the relative ___________elastic modulus.
Fill in the blank(s) with the appropriate word(s).