A parabolic reflector focuses electromagnetic waves into a beam as shown in the figure. The electromagnetic radiation is pulsed, with a pulse frequency of 28.0 GHz, and the duration of each pulse is t = 1.00 ns. The face of the reflector has a radius of 3.00 cm, and the average power during each pulse is 24.0 kW. (Due to the nature of this problem, do not use rounded intermediate values—including answers submitted in WebAssign-in your calculations.) (a) What is the wavelength (in cm) of these electromagnetic waves? cm (b) What is the total energy (in μJ) contained in each pulse? μJ (c) Compute the average energy density (in mJ/m³) inside each pulse. mJ/m³ Determine the amplitude of the electric field (in kV/m) and magnetic field (in µT) in these electromagnetic waves. Emax B max = kV/m μτ (e) Assuming that this pulsed beam strikes an absorbing surface, compute the force (in µN) exerted on the surface during the 1.00 ns duration of each pulse. με

A parabolic reflector focuses electromagnetic waves into a beam as shown in the figure. The electromagnetic radiation is pulsed, with a pulse frequency of 28.0 GHz, and the duration of each pulse is t = 1.00 ns. The face of the reflector has a radius of 3.00 cm, and the average power during each pulse is 24.0 kW. (Due to the nature of this problem, do not use rounded intermediate values—including answers submitted in WebAssign-in your calculations.) (a) What is the wavelength (in cm) of these electromagnetic waves? cm (b) What is the total energy (in μJ) contained in each pulse? μJ (c) Compute the average energy density (in mJ/m³) inside each pulse. mJ/m³ Determine the amplitude of the electric field (in kV/m) and magnetic field (in µT) in these electromagnetic waves. Emax B max = kV/m μτ (e) Assuming that this pulsed beam strikes an absorbing surface, compute the force (in µN) exerted on the surface during the 1.00 ns duration of each pulse. με