The theoretical and observed tensile yield strength of whiskers is approximately equal to _________ of the elastic modulus.
Fill in the blank(s) with the appropriate word(s).
1/10
Physics & Space Science
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A large block of wood and a small block of iron each register 2000 N on a weighing scale. Taking buoyancy of air into account, which has the greater mass?
A) wood B) iron C) both the same
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Wood from an ancient stump has a ratio of carbon-14 to carbon-12 that is one-eighth that of new wood. About how old is the stump? (Carbon-14's half-life is 5730 years.)
Physics & Space Science
If a metal contains 1028 free electrons, the number of different quantum states (nx, ny, and nz) is equal to:
(a) 1028 (b) 2×1028 (c) 0.5×1028 (d) 1
Physics & Space Science
What power (in diopters) of corrective lens is required to correct the vision of a myopic eye whose far point is at 170 cm?
What will be an ideal response?
Physics & Space Science