In a cylinder block, the opening that the valve head rests in is called the valve a. stem. b. seat. c. guide. d. margin.

which three statements are true about all alloys?

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