What is the direction of propagation of the wave if e⃗ =ei^,b⃗ =−bj^. express the direction of the propagation vector, p⃗ , as a unit vector. its three components should be entered in order (x, y,z) separated by commas. for example, if the wave propagates only in the -x direction, enter -1,0,0.
the liquid rise up through the dip tube when the valve is opened. the propellant gas wants to expand as much as it can, so if the valve is open, the propellant expands and pushes the spray up out of the can making more room for itself to expand
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if the light undergoes refraction at the interface, then the event is described by the rays a and c .
if the light undergoes reflection at the interface, then the event is described by the rays a and b .
oops. i see that these are answers. somehow i must have stumbled onto the set of jeopardy.