$ {\bf E} \times {\bf B}$ (which is the Poynting vector multiplied by $\mu_0$) should be in the direction of wave motion. I you want an aide-memoire, if you imagine taking a screwdriver and …

Dec 28, 2018 · Your question is a bit like asking if there are rules for the direction of arrows. In physics most vectors can point in pretty much any direction, depending on the physical …

Jan 31, 2023 · You'll find plenty of examples from classical, introductory mechanics and physics. For instance, you will often need to extract the components of a vector, such as a force vector …

Jul 7, 2024 · The ball's speed doesn't change, only its direction. This means the magnitude of momentum remains constant, but its direction changes. The change in momentum (and thus …

Jan 24, 2014 · What does the term direction of motion actually mean? Is it a direction where a particle is moving or the direction of its velocity? For example, what is the direction of motion …

Jun 13, 2016 · In case of closed surfaces the area vector is directed outwards the surface. But what is the direction of the area vector in case of an open surface e.g. A thin lamina type of …

The direction of the force is normal to the area, and its magnitude is proportional to the size of the area. This is why an infinitesimal area $ {\rm d} A$ can be a vector.

Mar 30, 2013 · To find the direction of the area vector, I am told to use the right hand rule with regards to the current in the loop (curl your fingers in the direction of current, and your thumb …

Mar 18, 2016 · What can you deduce on the vector's direction ? Is this related to the direction of propagation ? You indeed have two Maxwell equations that involve both electric and magnetic …

Jul 22, 2015 · Note that you can determine the tension's direction if you look at one half of the rope, but since the tensions occur in pair, there is no obvious direction of tension at that point …