Which wave has high enough energy to cause damage to skin and sometimes cancer?

Atransverse wave is traveling on a string stretched along the horizontal x-axis. the equation for the vertical displacement y of the string is given by y = (1.8 x 10-3)cos[π(13x - 60t)], where all quantities are in si units. what is the maximum speed of a particle of the string

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.