The base of a metal block, which is fixed in place, measures 90 cm by 90 cm, and the height of the block is 60 cm
A force, applied to the upper face and parallel to it, produces a shear strain of 0.0060. The shear modulus of this metal is 3.0 × 1010 Pa. The displacement of the upper face, in the direction of the applied force is closest to
A) 5.4 mm. B) 4.8 mm. C) 3.6 mm. D) 3.0 mm. E) 4.2 mm.
C
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Why use an interferometer?
A. It can detect light at wavelengths not available to single telescopes. B. Its two widely spaced mirrors act like one giant telescope with increased collecting area. C. Its two widely spaced mirrors act like one giant telescope with increased resolving power. D. By putting one mirror above the other you can make the instrument much smaller.
To turn 1 gram of boiling water to steam requires
A) almost as much energy as changing 1 gram of 0°C water to the boiling point. B) as much as increasing 1 kilogram of 95°C water to the boiling point. C) more energy than needed to turn 1 gram of absolute-zero ice to the boiling point. D) none of the above
One plate slides horizontally past another plate at the type of plate boundary called ______________
Fill in the blank(s) with correct word
What is the mass of a solid sphere that has a density 15.0 × 103 kg/m3 and a radius 10.0 cm?
A) 62.8 kg B) 4.56 kg C) 298 kg D) 3.58 × 106 kg E) 15.0 kg