Which is an example of convection? In a mountain forest, the sun heats up the ground. On a hot day, Amaya pours water on her face to cool off. At the beach, Stephan’s feet get hot walking across the sand. Above the sea, warm air rises, cools, and sinks.

D - Above the sea, warm air rises, cools, and sinks.

Explanation:

Got 100 on Edg bethren

he made 11 calls in one day

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