In the study that the fbi did on examining the physical characteristics of hair, what percentage of the “matches” were not really matches at all?

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?

Which class of lever is a baseball bat? what are the parts of a baseball bat's lever class? describe each one. enter your answer in the space provided.(this question you write your own answer.)i couldn't find the right category, so sorry if this doesn't match.