Homework #29

# 0 points in the gure below electromagnetic radiation

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Unformatted text preview: associated electric ﬁeld? Remember that c = 3 × 108 m/s. Correct answer: 12900 N/C. Explanation: Knowing that 005 (part 1 of 3) 10.0 points In the ﬁgure below, electromagnetic radiation is moving to the right, and at this time and place the electric ﬁeld is horizontal and points out of the page. The magnitude of the electric ﬁeld is E = 2850 N/C. The speed of light is c = 3 × 108 m/s. Take +x to be toward the right, +y to be upward, and +z to be out of the page toward you. Direction of propagation E = 2850 N/C What is the associated magnetic ﬁeld at this time and place? Begin by ﬁnding the x component, Bx . Correct answer: 0 T. Explanation: We can determine the nonzero component of B by using the right-hand rule. With the wave propagating in the +x direction, and the electric ﬁeld in the +z direction, the magnetic ﬁeld must point in the −y direction. Therefore the x and z components of the magnetic ﬁeld are both zero. 006 (part 2 of 3) 10.0 points Find By . Correct...
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