Final answer:
To write an equation for the cross section at y = -8 using x and z, substitute y = -8 into the given equation and solve for x and z.
Step-by-step explanation:
To write an equation for the cross section at y = -8 using x and z, we need to find the values of x and z that satisfy this condition. Since y = -8, we can substitute this value into the equation y(x, t) = 0.30 m sin (z - 4.00 m (x - 16.00 mt)).
Setting y = -8, we have -8 = 0.30 m sin (z - 4.00 m (x - 16.00 mt)). Now, we can solve for x and z.
Keep in mind that the equation is dependent on other variables such as t, which is not provided in the question. Therefore, we cannot find a specific equation for the cross section at y = -8 using only x and z.