# Conceptual Physics Ch 25

What is Fick's Law? – The NET rate of DIFFUSION of gas across a membrane is PROPORTIONAL to the difference in partial pressure and surface area of membrane and thickness of membrane
Magnetic field of straight line (B) – B = µ₀i / 2πr
magnetic fields are due to currents
alpha – atomic mass reduced by 4; atomic number reduced by 2
Pacemaker – A machine that detects irregular heartbeats and produces electrical signals to counter these
distance – how far away an object is from the origin
What nuclear process produces energy in our sun? – Our Sun produces energy by fusing hydrogen to produce helium. Nuclear Fusion.
Only part of energy can be usually transferred, what happens to the wasted energy? – It warms its surroundings
convex – this type of mirror reduces
qualitative data – observations that cannot be numerically measured, usually consisting of verbal descriptions of an observation
virtual image – an image formed by light coming from an apparent light source; light is not arriving at or coming from the actual image location
Two mirrors are at right angles to one another. A light ray is incident on the first at an angle of 30° with respect to the normal to the surface. What is the angle of reflection from the second surface?
Magnetic Domains – The magnetic field of an individual iron atom is so strong that interactions among adjacent atoms cause large clusters of them to line up with one another. These are defined as clusters of aligned atoms.
Damping – the reduction in the amplitude of a wave due to the dissipation of wave energy
Simple harmonic motion – A simple harmonic motion is the back and forth motion in a pendulum (AKA Oscillatory motion)
Negative velocity – moving in the opposite direction
Twо mirrоrs аre аt right аngles tо one another. A light ray is incident on the first at an angle of 30° with respect to the normal to the surface. What is the angle of reflection from the second surface?
This equation describes volume flow rate. Q is rate, A is area, v is velocity of the fluid. –
mutation – A change in DNA caused by radiation.
Prism – *See diagram* the Ray is refracted away from the apex of the prism at both boundaries. The prism has the effect of dispersing the light into the visible spectrum

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