pHYSICS Flashcards
Ficks law
flow is proportional to partial pressure difference
why does nuclear fusion need high pressure and temperature
to overcome the electrostatic repulsion between protons
relationship between atmospheric pressure and altitude
inversely proportional-when air molecules collide with a surface the pressure increases. At increasing altitude, the distance increases between the particles.
step down transformers
current increases voltage decreases and number of primary coils is higher
parrafin wax
at melting point it becomes more disordered temperature remains the same and bonds between c and h break
elastic deformation
material retains original shape when forces are removed atoms move small distances and return to equilibrium position
irradiation
exposure to radiation without coming in contact with the source receiving a lower dose
microwaves
are transverse waves which travel at the speed of light
what changes during refraction/reflection
frequency stays the same wavelength changes
how do you find maximum displacement from a wave
from its centre
what happens when a wave travels to a more dense medium
speed decreases wavelength therefore decreases
what increases if a coil is rotated more quickly
frequency amplitude and emf force
resistance in parallel vs series
parallel circuits have a lower resistance than series. CURRENT IS INVERSELY PROPORTIONAL TO RESISTANCE
step down transformers
decrease the voltage and increase the current. Power stays the same
