Experiments Flashcards
Latent heat of fusion of Ice
Mass of ice was found by (Mc + Mw+ Mi) - (Mc + Mw)
Crushed ice that was melting
Insulated by having wool around it to stop conduction and a lid to stop convection
thermometer has a low specific heat capacity and is precise
Apparatus of SMH exp
Rhetort stand, string, wooden blocks, bob, timer, metre stick
Why 20 oscillations
DIminshes human error therefore greater accuracy to your result
Graph SHM
T over 20 then squared
L(m)
Tsquared = 4 pie squared root l over g
Frequency to tension diagram
sonometer, 2 bridges, piece of paper, string, newtonmeter, tensioner, tuning fork
Frequency to tension method
Keep string length constant then place a tuning fork one the sting at the bridge, increase the tension until your paper flies off this is the the tension for that frequency.
F - T Graph
f = 1 over 2l root T over miu
PCM diagram
Track, 2 trolleys, velcro, light gates, retort stand
How friction and gravity was minimised
By increasing the slope of the track so that the weight of the trolley acting down the slope was equal to the friction acting up cancelling them out
How friction and gravity was minimised
By increasing the slope of the track so that the weight of the trolley acting down the slope was equal to the friction acting up cancelling them out
PCM calculations
m1u1 + m2u2m =(m1 +m2)v don’t equal; I=until the end
p=mv v = s over t
(Refractive index) How angle of refraction was found
Shine light ray through glass box at angle theta
mark two points on incidence ray and refracted ray
then remove box and connect the dots
draw normal to theta
Then measure the angle with protractor form normal to ray in the box
(Refractive index) graph
sin i over sin r
(Acceleration due to g) diagram
Rhetort stand, pincers, metal ball, pressure pad, cables, timer,
(Acceleration due to g) between which points was s measured
bottom of ball to top of pressure pad
(Acceleration due to g)How t was measured
The timer started when the ball was released and was stopped when it hit the pressure pad
(Acceleration due to g) graph
s over t squared
2(m)
(Acceleration due to g) small dense ball
less air resistance
(Monochromatic light) labelled diagram
Spectrometer, diffraction grating, sodium lamp
(Monochromatic light). how angle between n-= 1 was found
record theta r at n=1
record theta l at n=1
minus them
calculate wavelength
nlamba=dsintheta
(laws of equilibrium) centre of gravity was found
suspending the ruler with a string , wherever the string lies, when the ruler stays suspended in the air is your centre of gravity
(laws of equilibrium) weight of metre stick
suspending it with 2 newton meters
(laws of equilibrium) net force =
up forces - down forces
(laws of equilibrium) sum of moments
clockwise = anticlockwise moment = w by distance from centre of gravity
(Boyles law) diagram
pressure gauge
volume scale
compressor
(Boyles law) method
decrease presuure and record volume
(Boyles law) graph
p inversely proportional to v
