Calculate the refractive index of the substance if the speed of light in the medium is 210,000 km/s.

2.43
1.43
0.7
1.89

When does your body conduct current more readily?

Explain what will happen if decomposers were apsent from a forest ecoysystem.

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.