X-ray radiation falls in the wavelength region of 1.00×10-11 to 1.00×10-8 meters. what is the frequency of x-ray radiation that has a wavelength of 1.00×10-11 m?

3 × 10∧19 Hz or s−1

Explanation:

Formula:

c= f×λ

c= speed of light

f = frequency

λ= wavelength

Given data:

wavelength= 1.00×10-11 m

speed of light = 3× 10∧8 m/s

frequency = ?

Solution:

Now we will put the values in formula:

c= f×λ

f= c/λ

f= 3 × 10∧8 m/s / 1.00×10-11 m

f= 3 × 10∧19 Hz or s−1

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.