Why is it difficult to observe at infrared wavelengths? what do astronomers do to address this difficulty?

Ahuge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. the upper face carries +95.0 nc/m2 while the lower face carries -25.0 nc/ m2. what is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (ε0 = 8.85 × 10-12 c2/n · m2)

The dominant wavelength of energy emitted by the sun is

Describes how input voltage signals received by a computer are handled through a series of electronic logic circuits maintained in its programmed instructions. these instructions are used to change the input voltage signals, or data, into output voltage signals, or commands.