A radio wave is transmitting with a power per unit area of I =274 W/m^2. Randomi

Question

A radio wave is transmitting with a power per unit area of I =274 W/m^2. Randomized Variables I = 274 W/m^2 Part (a) A surface area absorbs the wave completely. Express the radiation pressure on the surface, P_alpha, in terms of I and the speed of light c. Expression: P_alpha = ___ Select from the variables below to write your expression. Note that all variables may not be required. alpha, beta, theta, a, c, d, g, h, i. I, j, k, m, P, t Part (b) Solve for the numerical value of P_alpha in N/m^2. Numeric: A numeric value is expected and not an expression. P_alpha = ___ Part (c) A surface area reflects the wave completely. Express the radiation pressure on the surface P_alpha, in terms of I and c. Expression: P_alpha = ___ Select from the variables below to write your expression. Note that all variables may not be required, alpha, beta, theta, a, c, d, g, h, i, I, j, k, m, P, t Part (d) Solve for the numerical value of P_alpha. Numeric: A numeric value is expected and not an expression. P_alpha = ___

Explanation / Answer

part A :

Radiation Pressure For complete absorption is

Pa = I/c

Where c is Speed of light

and I is intensity of light

---------------

Part B :

Pa = 274/3e8

pa = 9.13 *10^-7 Pa

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part C:

Radiation Pressure for complete Reflection

Pr = 2I/C

-----------------------------

part D :

Pr = 2* 9.13*10^-7

Pr = 1.826 *10^-6 Tesla

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