(a) For constant phase, x must increase as t increases, so the wave travels in the...

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(a) For constant phase, x must increase as t increases, so the wave travels in the positive x direction. Comparing the specific form to the general form, we have 6nt - 4x + = kx - wt + 4. 4 The speed and direction of the wave are both specified by the vector wave velocity. v = fai k =1.5 6 rad/s 7 rad/m 1.5 i m/s Part 4 of 6 - Analyze (b) Substituting t = 0, x = 0.117 m, we have (0.325 m) sin (t y The correct answer is not zero. + 1 = Your response differs from the correct answer by more than 10%. Double check your calculations. (0.325 m) sin(-1) = Your response differs from the correct answer by more than 10%. Double check your calculations. (0.325 m) (1 = The response you submitted has the wrong sign. = 0.325 The response you submitted has the wrong sign. m = 32.5 The response you submitted has the wrong sign. cm. Note that when we take the sine of a quantity with no units, the quantity is not in degrees, it is in radians. So we must make sure that the calculator is properly set for entering values in radians. (a) For constant phase, x must increase as t increases, so the wave travels in the positive x direction. Comparing the specific form to the general form, we have 6nt - 4x + = kx - wt + 4. 4 The speed and direction of the wave are both specified by the vector wave velocity. v = fai k =1.5 6 rad/s 7 rad/m 1.5 i m/s Part 4 of 6 - Analyze (b) Substituting t = 0, x = 0.117 m, we have (0.325 m) sin (t y The correct answer is not zero. + 1 = Your response differs from the correct answer by more than 10%. Double check your calculations. (0.325 m) sin(-1) = Your response differs from the correct answer by more than 10%. Double check your calculations. (0.325 m) (1 = The response you submitted has the wrong sign. = 0.325 The response you submitted has the wrong sign. m = 32.5 The response you submitted has the wrong sign. cm. Note that when we take the sine of a quantity with no units, the quantity is not in degrees, it is in radians. So we must make sure that the calculator is properly set for entering values in radians.