Velocity: Human reaction times are worsened by alcohol. How much further (in feet) would a drunk driver's car travel before he hits the brakes than a sober driver's car? Assume that both are initially traveling at 50.0 mi/h and their cars have the same acceleration while slowing down, and that the sober driver takes 0.33 s to hit the brakes in a crisis, while the drunk driver takes 1.0 s to do so. (5280 ft = 1 mi)
Fill in the blank(s) with the appropriate word(s).
49 ft
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What is the occupancy probability at an energy of 12.00 eV for a material with EF = 11.63 eV at a temperature of 500 K?
A) 3 x 10-4 % B) 2 x 10-2 % C) 2% D) 6% E) 12%
Which of the following is not expected to provide solid-solution strengthening?
(a) A large substitutional atom in the tensile strain region of an edge dislocation. (b) A small substitutional atom in the compressive strain region of an edge dislocation. (c) A small interstitial atom in the compressive strain region of an edge dislocation. (d) A small interstitial atom in the tensile region of an edge dislocation.
A hollow spherical planet is inhabited by people who live inside it, where the gravitational field is zero. When a very massive spaceship lands on the planet's surface, inhabitants find that the gravitational field inside the planet is
A) still zero. B) non-zero, directed toward the spaceship. C) non-zero, directed away from the spaceship.
If VA ? VB = 50 V, how much energy is stored in the 54-?F capacitor?
a.
50 mJ
b.
13 mJ
c.
28 mJ
d.
8.9 mJ
e.
17 mJ