The expression 0.01e+0.003e^2 the thickness in millimeters (mm) of the insulation needed for a high voltage cable. e is the number of kilovolts carried by the cable. what thickness of insulation material is needed for 7 kilovolt cable?
a)0.091mm
b)1.54mm
c)0.217mm
d)0.847mm

The human body stores chemical energy from digested food. some of the chemical energy is converted into mechanical energy when the body moves. which statement best supported by this information

Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.

Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?