An airplane flying at a distance of 10 km from a radio transmitter receives a signal of intensity 10 mW/m2.What is the amplitude of the (a) electric and (b) magnetic component of the signal at the airplane? (c) If the transmitter radiates uniformly over a hemisphere, what is the transmission power?

If the electric field emitted by a radio tower has an amplitude of 174 V/m, what is the amplitude of the corresponding magnetic field?

Suppose the magnetic field of an electromagnetic wave is given by B = : (1.3 × 10−¹0) sin(kx – wt) T. (a) What is the average energy density of the magnetic field of this wave? J/m³ (b) What is the average energy density of the electric field? J/m³

The helium-neon lasers most commonly used in student physics laboratories have average power outputs of 0.250 mW. (a) If such a laser beam is projected onto a circular spot 1.30 mm in diameter, what is its intensity? 1.88e2 W/m2 (b) Find the peak electric field strength. 1.255e-6 What is the relationship between intensity and electric field strength? V/m (c) Find the peak magnetic field strength. 3.765e-6 What is the relationship between electric field strength and magnetic field strength in an electromagnetic wave? T

The average intensity within the 3.4-mm radius circular spot illuminated by a helium-neon laser pointer is 53.5 W/m². (a) What is the peak amplitude of the beam's electric field component? Emax = |0.53 N/C (b) What is the rms amplitude of the beam's magnetic field component? Brms = 0.00125 X HT (c) What is the average output power of the laser? Pav = 7.77 avg x mW

To maximize the magnitude of the current induced in a receiving antenna, should the antenna be oriented parallel or perpendicular to the polarization of the electromagnetic wave? Explain your reasoning.

Suppose the magnetic field of an electromagnetic wave is given by B = (2.7 x 10-10) sin(kx - wt) T. (a) What is the average energy density of the magnetic field of this wave? J/m³ (b) What is the average energy density of the electric field? J/m³

Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of 0.49 mW. (a) If such a laser beam is projected onto a circular spot 1.3 mm in diameter, what is its intensity? I= W m (b) Find the peak magnetic field strength. Bo= T (c) Find the peak electric field strength. E₁= V m

#3: A certain 60.0 Hz AC power line radiates an electromagnetic wave having a maximum electric field strength of 13.0 kV/m. A) what is the wavelength of this very low frequency EM wave? B) What is its maximum magnetic field strength?