Aspherical shell of radius 9.0 cm carries a uniform surface charge density σ= 9.0 nc/m2. the electric field at r= 9.1 cm is approximately

What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl,max are applied?

It is really hard for me right know

Consider two regions of space containing a static electric field, region a and region b. in region a the equipotential lines are more closely spaced than those in region b. what can be said about the relative strength of the electric field in the two regions? a) the electric field in region a is stronger th