The linear density of a string is 1.4 × 10-4 kg/m. A transverse wave on the string is described by the equation y = (0.026 m) sin[(1.0 m-1)x + (38 s-1)t] What are (a) the wave speed and (b) the tension in the string?

Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?