Fewer than 100 stars lie within 5 parsecs of the Sun
Indicate whether the statement is true or false
TRUE
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Addition by 1. Components: Find the magnitude and direction of the resultant of the three force vectors, 
,
, and 
, shown in the figure. These vectors have the following magnitudes: A = 5.0 lb, B = 7.9 lb, and C = 8.0 lb. Express the direction of the resultant by specifying the angle it makes with the +x-axis, with counterclockwise angles taken to be positive.
style="vertical-align: 0.0px;" height="307" width="314" /> Fill in the blank(s) with the appropriate word(s).
As a hiker descends a hill, the work done by gravity on the hiker is
A. positive and depends on the path taken. B. negative and depends on the path taken. C. positive and independent of the path taken. D. negative and independent of the path taken.
The fact that gasoline overflows a full tank on a hot day is evidence that
A) gasoline expands more with increasing temperature than its tank. B) the tank contracts while gasoline expands with temperature. C) both of these D) neither of these
The standard theory does not include which interaction?
A. electromagnetic B. gravitational C. weak D. strong E. It contains all of these choices.