IB Physics Glossary
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occurs when a satellite moves into a low orbit such that the frictional force increases the speed of the satellite.
have magnitude only. Direction or changes in direction have no effect on scalar quantities. Examples include distance, speed, mass and temperature.
states, a star leaves the main sequence when it consumes about 12% of its hydrogen fuel. (d)
is black and white vision which occurs in low-light conditions. Vision is aided by the rod cells. Cone cells don't play a role.
Second law of thermodynamics
thermal energy cannot spontaneously transfer from a region of low temperature to a region of high temperature
the total entropy of the universe must always stay the same or increase.
are Cyan (Blue & Green), Magenta (Blue & Red) and Yellow (Green and Red).
Sensory hearing loss
occurs when the air conduction thresholds (middle ear) and the bone conduction thresholds (cochlea) both show a hearing losses. If bone conduction losses are greater than a cochlea implant may be required. Reasons include
a rule, the number of significant digits in a result should not exceed that
of the least precise value upon which it depends.