Which of the following is true about the regions of the electromagnetic spectrum? I. Visible light waves have higher frequencies than radio waves.

II. X-rays have shorter wavelengths than visible light waves.

III. Gamma rays have lower frequencies than X-rays.

IV. Ultraviolet waves have longer wavelengths than infrared waves.

A. I, II, III, and IV
B. I and II only
C. III only
D. II and IV only

Which levels of government establish and implement educational requirements for minors

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =