Magnetic field intensity of a propagating wave in free space is given by H=0.3 cos(4*108t- 2y) ax V/m the plot of H versus y at time, t = T/1000
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- An electromagnetic wave has a peak magnetic field component of magnitude 1.5 x 10^-7 T and peak electric field component of 45 N/C. What is the value of the wave intensit? [40 = 4mx10-7 T.m/A] O 2.69 W/m 2 O 8.67 W/m^2 O 10.9 W/m 2 4.47 W/m 2What is the intensity in W/m2 of a laser beam used to burn away cancerous tissue that puts 374 J of energy into a circular spot 2.00 mm in diameter in 4.67 s? Compare this to the average intensity of sunlight (about 700 W/m2). answer blank times 10^7Starting from Maxwell's equations V × V × A = V(V· A) – V²A | in a vacuum, use the identity and show that the electric and magnetic fields satisfy both the equation of a wave and obtain the speed of that wave in the MKS system.
- A pulsar is a type of rotating neutron star that emits a beam of electromagnetic radiation. Imagine a pulsar that is moving toward Earth at a speed of 743.000 km/s. It emits mostly radio waves with a wavelength (at the source) of 137.000 cm. What is the observed wavelength of this radiation on Earth? (Assume the Earth is stationary. Consider the speed of light c = 3.00000 x 108 m/s. Give your answer to at least six significant figures.) 4.0 cm Additional MaterialsRadio waves and microwaves are used in therapy to provide “deep heating” of tissue because the waves penetrate beneath the surface of the body and deposit energy. We define the penetration depth as the depth at which the wave intensity has decreased to 37% of its value at the surface. The penetration depth is 15 cm for 27 MHz radio waves. For radio frequencies such as this, the penetration depth is proportional to √λ, the square root of the wavelength. What is the wavelength of 27 MHz radio waves?A. 11 m B. 9.0 m C. 0.011 m D. 0.009 mHence show that the wave equation for the magnetic field is V²H+k²H=0 where k = ₁√√μ₁&