Physics equations Flashcards
(25 cards)
equation for kinetic energy
KE = ½mv^2.
equation for momentum
p = m x v
equation for density
d = m ÷ v
equation for pressure
p = f ÷ a
equation for acceleration
a = v-u ÷ t
equation for weight
w = m x g
equation for gravitional potential energy
Ep = mgh
Atom
smallest particle of an element
what do the periods tell us
how many shells there are
what do the groups tell us
how many electrons there are in the last shell.
equation for moment
force x distance from the pivot
symbol for moment
Nm - Newton - meters
The energy stored when repelling poles have been pushed closer together or when attracting poles have been pulled further apart.
Magnetic
The total kinetic and potential energy of the particles in an object, in most cases this is the vibrations - also known as the kinetic energy - of particles. In hotter objects, the particles have more internal energy and vibrate faster.
Thermal
The energy stored in chemical bonds, such as those between molecules.
Chemical
The energy of a moving object.
Kinetic
The energy stored when repelling charges have been moved closer together or when attracting charges have been pulled further apart.
Electrostatic
The energy stored when an object is stretched or squashed.
Elastic potential
The energy of an object at height.
Gravitional potential
The energy stored in the nucleus of an atom.
nuclear
Respiration - definition
Respiration is a chemical reaction which occurs in all living cells, releasing energy from glucose.
Aerobic respiration
Aerobic respiration occurs with oxygen and releases more energy but more slowly.
Anaerobic respiration
Anaerobic respiration occurs without oxygen and releases less energy but more quickly.
Equation for aerobic respiration
glucose + oxygen → carbon dioxide + water
