Question

For X-ray radiation with photon energy 1 MeV, the half value layer (HVL) was found to be (a) for water 10.2 cm, (b) for bone 2 cm. Find linear and mass attenuation coefficients for water and bone. The density of water rhow = 1 g/cm3, density of bone rhob = 1.85 g/cm3.

Answer 1

Answer:

Friction is a force between two surfaces that are sliding, or trying to slide, across each other. ... Friction always works in the direction opposite to the direction in which the object is moving, or trying to move. Friction always slows a moving object down.