Heavy water has a chemical formula d_2o. it is a form of water in which all hydrogen is deuterium ^2h and has a density of 1.11 g/cm^3. neglect the contribution of oxygen atoms. calculate the number of collisions required to slow down a neutron from 2 mev to 0.025 ev heavy water. determine the diffusion length of thermal neutrons in heavy water.

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?

Cho is making a bar graph showing the amount of money spent on health care between 1999 and 2005. the dependent variable is the: a: money spent b: year c: number of patients