A wire of length l and resistance r is now drawn out by pulling such that its new resistance is 15r. What is its new length? (assume the density remains constant. ).

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

Which one of the following terms is used to indicate the natural tendency of an object to remain at rest or in motion at a constant speed along a straight line? velocity acceleration equilibrium force inertia