If an electromagnetic wave has a frequency of 6 x 10° Hz, what is its wavelength? Use 2 -. The speed of light is 3 x 108 m/s.
O A. 5 x 1014 m
OB. 2x 1012 m
OC. 5x 102 m
O D. 2x 10® m

Asquare isothermal chip is of width w=5 mm on a side and is mounted in a substrate such that its side and back surfaces are well insulated; the front surface is exposed to the flow of a coolant at tinf=15 °c. from reliability considerations, the chip temperature must not exceed t=85 °c. if the coolant is air and the corresponding convection coefficient is h=200 w/m2 x k, what is the maximum allowable "power" of the chip? if the coolant is a liquid for which h=3000 w/m2 x k, what is the maximum allowable power of the chip?