The linear attenuation coefficients of 300 keV γ-rays for lead is 4.5 cm−1. Determine the half-value layer for this material.

probably not if net force is zero

true is the correct answer

hope i

not moving. pos accel,

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.