If the intensity of an electromagnetic wave is 80 mw/m^2, what is the amplitude of the magnetic field of this wave? (c=3.0×10^8m/s, μ0=4π×10^−7t⋅m/a, ε0=8.85×10^−12c2/n⋅m^2)

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

Marvin records scientific data about lake superior. for which property has marvin forgotten to use an si unit of measurement? shore length high temperature low temperature annual precipitation

What describes the formation of horizon b? a. forms at the surface b. features parent material c. undergoes the most change d. forms due to decomposed material i think the answer is c. undergoes the most change