Good Day Miss, at 8:02, I think since they asked to demonstrate Longitudinal waves it should be Parallel to AB, answer A because the vibrations in a longitudinal waves are parallel to the direction of propagation.
@@dookington3878yeah but that provides evidence sound waves can be diffracted which suggests that it could also be reflected Can the same be said about B?
@@notaaronburr3177because barbecueing occurs mainly through convection, the main heat from the coal fire transfers through the air within the bbq grill.
No it's d, right hand thumb rule you point the direction of the current (x so into the paper) and the curvature of your fingers tells you the field direction
