3. Using the F, m, a triangle, calculate the boy's mass. Use the "force
of gravity" listed above (300 N) and assume an acceleration due to
gravity of 10 m/s2. Make sure to show your work and include units in
your answer!

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter