Describe 3 safety aspects that prevent workers who work in noisy workplaces from being exposed to too high level of noise.

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?