Which one of the followings is a source of electromagnetic waves? A) stationary electric charges B) none of the answers C) electric charges moving on a circle with constant speed D) a stationary permanent magnet E) electric charges moving on a straight line with constant speed
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- What are the amplitude and electric field of an electromagnetic wave with a magnetic field amplitude of 2 mTView the chart on the characteristics of electromagnetic and mechanical waves and answer the ques Electromagnetic Waves Mechanical Waves Transverse Waves Transverse, Longitudinal, and Surface Waves Do not require a medium Require a medium Begin with the movement of charged particles Begin when matter is disturbed How is the transfer of energy different in electromagnetic waves compared to mechanical waves? Electromagnetic waves requires a source of energy Electromagnetic waves can transfer energy through a vacuum, or empty space Electromagnetic waves can change speed or directionWhen electromagnetic waves travel from one medium to another, its speed changes (either increase or decrease) while the frequency remains the same. Answer the questions below:- What happens to the wavelength of an electromagnetic wave if its speed decreases as it goes from air to glass?- Find the speed of the greenlight if the frequency is 5.5 x 1014 Hz and the wavelength changes to 4.2 x 10-7 m?
- Electromagnetic waves 1) Ex=0 Ey=0 Ez =5000 sin (kx - 1000t) Use the relationship between k,w and c find "k" Find a possible equation for the magnetic field vector BA ball of mass M is suspended by an insulating string between two parallel metal plates. If the intensity of the electric field is E, what is the magnitude and sign of the charge that had to be placed on the ball so that the tension in the string is zero? OmA -0.4μc charge is found at point A (34, 2, -1) in (mm) and a second 0.8 nC charge is found at point B (-3, 8, -6) in cm. Find the electric intensity
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