Aproton has nearly two-thousand times the mass of a (n) a) photon b) neutron c) electron d) hydrogen atom

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.

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?