physics Flashcards
waves with a short wavelength have?
high frequency and energy
waves with a long wavelengths have
low frequency and energy
name the electromagnetic spectrum in order
radio waves, microwaves, inferred, viable light, ultra violet, x-rays, gamma rays
what’s a transverse wave
particles vibrate at right angles
what’s a longitudinal wave
particles vibrate parallel to the direction of the wave
whats frequency
the number of waves passing a point
how to calculate speed?
speed = distance
———-
time
what’s the wave equation?
velocity = frequency x wavelength
how to calculate momentum
momentum = mass x velocity
kg = kg x m/s
what does P stand for in the triangle: p
m x v
momentum
give examples of breaking distance
size of car
wet roads
foggy weather
give examples of thinking distance
old age
mobile phone usage
drugs/ smoking
distance travelled=
average speed x time
acceleration =
final velocity(speed) - initial velocity
————————————————-
time ( s)
force=
mass(kg) x acceleration ( m/s ) ²
weight=
mass (kg) x gravitational field strength (N/kg)
KE =
1/2 x m x v ²
p =
m x v
v=
distance
————
time
what are the products of photosynthesis
glucose and oxygen
give one reason why cells could be stained
concentrated salty solution would make it clearer
explain why a cytoplasm shrinks when in salt solution
the sycophants shrink away because the salt solution is too strong therefore making the cell weaker1.
write the balanced equation of HCL
H₂ + Cl₂ = 2HCL
How do you calculate Rf value ?
compound distance
—————————-
solvent distance
eg . 2.3
———-
8. = 0/29
