An electromagnetic wave with a frequency 5.70 * 1014 Hz propagates with a speed of 2.17 * 108 m/s in a certain piece of glass. Find (a) the wavelength of the wave in the glass; (b) the wavelength of a wave of the same frequency propagating in air.
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- Consider electromagnetic waves in free space. What is the wavelength of a wave that has the following frequencies? (a) 4.24 x 10¹¹ Hz (b) m 8.28 x 10¹6 Hz mWhat is the maximum electric field strength (in kV/m) in an electromagnetic wave that has a maximum magnetic field strength of 5.90 × 10¬4 T (about 10 times the Earth's)? kV/mThree electromagnetic waves travel through a certain point P along an x axis. They are polarized parallel to a y axis, with the following variations in their amplitudes. Find their resultant at P. E = (5.0 x 10-5 V/m) sin[(2.0 x 1014 rad/s)t] E2 = (7.0 x 10-6 V/m) sin[(2.0 × 1014 rad/s)t + 45°] Ez = (7.0 x 10 6 V/m) sin[(2.0 x 1014 rad/s)t - 45°] E = ) sin[C_ 1014 )t +
- What is the maximum electric field strength (in kV/m) in an electromagnetic wave that has a maximum magnetic field strength of 6.20 ✕ 10−4 T (about 10 times the Earth's)?hw 2 Laser beams are sometimes used to burn away cancerous tissue. What is the intensity, in watts per square meter, of a laser beam that is 90.0% absorbed by a 2.1-mm diameter spot of cancerous tissue and must deposit 515 J of energy to it in a time period of 4.05 s?A source of sinusoidal electromagnetic waves radiates uniformly in all directions. At a distance of 10.0 m from this source, the amplitude of the electric field is measured to be 3.30 N/C . What is the electric-field amplitude at a distance of 20.0 cm from the source? Emax=?
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