2 Students were asked to identify the location of elements in the periodic table based on clues printed on game cards.
E...

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

e/c, where e is its total energy

the components of a vector are the parts of the vectors that are to each other.

b perpendicular