Auniform thin rod of length 0.89 m and mass 1.9 kg lies in a horizontal plane and rotates in that plane about a pivot at one of its ends. the rod makes one rotation every 0.35 second and rotates clockwise as viewed from above its plane of rotation. find the magnitude of the rod’s angular momentum about its rotation axis, in units of kg⋅m2/s.

An electromagnetic wave with frequency 65.0 hz travels in aninsulating magnetic material that has dielectric constant 3.64 andrelative permeability 5.18 at this frequency. the electric fieldhas amplitude 7.20 \times 10^{ - 3} {\rm v}/{\rm m}. a. what is the speed of propagation of the wave? b.what is the wavelength of the wave? c.what is the amplitude of the magnetic field? d.what is the intensity of the wave?