Suppose you want to walk from one point to another in a city with uniform square blocks, as pictured. The straight-line path that a
helicopter might fly is blocked to you as a pedestrian, and so you are
forced to take a two-dimensional path, such as the one shown. You
walk 14 blocks in all, 9 east followed by 5 north. What is the straight-
line distance? *

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

The least penetrating form of radiation is

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.