Please help I'm being timed! A basketball accelerates 18 m/s² with a force of 10.8 N. If resisting forces are ignored, what is the mass of the basketball to the nearest kg? Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.​

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?