A car traveling with velocity v is decelerated by a constant acceleration of magnitude a. It travels a distance d before coming to rest. If its initial velocity were doubled, the distance required to stop would
A) double as well.
B) decrease by a factor of two.
C) stay the same.
D) quadruple.
E) decrease by a factor of four.
D
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The figures below represent interference fringes. The distances from the screen to the slits is the same for each figure, and the planes of the screen and the slits are parallel. In each figure the spacing d between the slits is the same. Which figure(s) represent(s) slits illuminated with light of the shortest wavelength ?? The white spaces represent the interference maxima.
A. I. B. II. C. III. D. IV. E. V.
The balance between gravity and ________ creates the internal structure of stars
A) relativistic electrons B) radiation pressure C) the helium flash D) electron degeneracy E) hydrogen gas
If Euclid is right, then ?o is
A) zero. B) 0.3. C) 1.0. D) 2.0. E) infinite.
An ionized gas is a state of matter called a __________
Fill in the blank(s) with correct word