There is an almost isotropic radiation coming to earth from outer space from all direction, the so-called background radiation. this radiation corresponds to a temperature of 3 k. to which wavelength should we tune our antenna in order to detect this radiation? a. 966 mmb. 8.69 mmc. 8.69 μmd. 966 μm

D. 966 μm

Explanation:

b = Wien's displacement constant =

T = Temperature

= Peak wavelength

Here the Wien's displacement law is used

The wavelength we should tune our antenna in order to detect this radiation is 966 μm

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it