Remember when we draw magnetic field lines, we draw them so that the density of the lines in a given drawing represents the strength of the field at every location in the drawing. Therefore, if we draw a surface in a uniform magnetic field: a. the number of magnetic field lines must equal the number of electric field lines.
b. the number of magnetic field lines entering the surface must be less than the number leaving the surface.
c. the number of magnetic field lines entering the surface must be greater than the number leaving the surface.
d. the number of magnetic field lines entering the surface must be equal to the number leaving the surface.

Why does lightning travel from clouds to the ground?

The chart shows the costs and shipping times for materials that a company needs to build a new product. which describes the best trade-off if the company needs to start building their product within the next two years? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents