23. If a plane electromagnetic wave traveling in the x-direction has = –kEmax sin(kx – ωt), we can deduce thatis equal to ______. (A) kBmax sin(kx – ωt) (B) cBmax sin(kx – ωt) (C) ωBmax sin(kx – ωt) (D)ωcBmaxsin(kx – ωt) (E)sin(kx – ωt)

2. The first stage of a Saturn V space vehicle consumes fuel and oxidizer at the rate of 1.50 × 10⁴ kg/s, with an exhaust speed of 2.60 × 10³ m/s. What is the acceleration of the vehicle just as it vertically lifts off the launch pad on the Earth if the vehicle's initial mass is 3.00 × 10⁶ kg? (A) 7.40 m/s² (B) 5.37 m/s² (C) 3.20 m/s² (D) 1.48 m/s² (E) None of the above is correct.

23. If a plane electromagnetic wave traveling in the x-direction has = –kE_max sin(kx – ωt), we can deduce thatis equal to ______.
(A) kB_max sin(kx – ωt)
(B) cB_max sin(kx – ωt)
(C) ωB_max sin(kx – ωt)
(D)ωcB_maxsin(kx – ωt)
(E)sin(kx – ωt)

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