At one instant, the electric and magnetic fields at one point of an electromagnetic wave are E = (250i + 350 j – 50k) V/m and B = (7.9i – 7.0j + ak)Bo • Part A What is the value of a? Express your answer using two significant figures. > View Available Hint(s) a = -9.5 Previous Answers v Correct Important: If you use this answer in later parts, use the full unrounded value in your calculations. Part B What is the value of Bg? Еxpress answer using two significant figures in microteslas. > View Available Hint(s) ? Ba = Submit • Part C What is the Poynting vector at this time and position? Find the z-component Express your answer to two significant figures and include the appropriate units. > View Available Hint(s) ? Value Units Submit • Part D Find the y-component of the Poynting vector. Express your answer to two significant figures and include the appropriate units. > View Available Hint(s)

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.