4. How could you determine the altitude represented by the contour lines of a map?

You should check the legend.

Contour lines do not indicate altitude.

Measure the distance between the lines.

Assume it is 300 feet because that is the standard.

answer; ///i believe that the correct answer is (45*) at a 45 degree check first good

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.