An insulating spherical shell has an inner radius R1 and an outer radius R2. The shell has a uniform charge volume density of 10.0 nC/m3 and the electric field just outside the shell’s outer surface is radially directed and has a uniform strength of 120 N/C. A. If the shell’s outer radius is R2 = 1.1 m, what is its inner radius R1, in meters?

Determine the maximum r-value of the polar equation r =3+3 cos 0

What is the role of lenses in microscopy?

Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.