Physics Experiments
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| Constant velocity of a metal rider on an air track | show 🗑
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| show | *attach card of length l
*connect newtons to rider
*measure t1 on first light gate and t2 on the second
*record distance s between two light gates
*calculate acceleration by v^2=u^2+2as i.e: a=v^2-u^2/2s
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| show | *measure distance s from bottom of ball to vibration plate
*measure range of values for t and pick smallest
*use variation of s=ut+1/2at^2: a=g and u=0, g=2s/t^2
*g= 2(slope of graph)
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| show | *all but one newtons on rider, other one on pan connected, move one each time
*record:
:length of card l
:times t1 and t2
:the distance between the light gates s
:the mass of the newtons on the pan m
*u=l/t1 and v=l/t2
*a=v^2-u^2/2s
*f=m(kg)x9.8
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| show | *one light gate before second rider
*one light gate after second rider
*record mass of rider&card and other rider (m1 & m2)
*u1=l/t1 u2=0
*v1=v2=l/t2
*m1u1 + m2u2 = v(m1+m2)
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| show | *Boyle's Law apparatus
*pump air into inlet of oil reservoir until pressure is at max
*wait for temp to settle
*record
:volume of air column
:pressure reading from gauge
*increase the pressure
*record range of values
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| The Laws of equilibrium for a set of co-planar forces | show 🗑
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| Relationship between period and length & calculate 'g' *GRAPH | show 🗑
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| show | *ungraduated thermometer
*mercury thermometer
*place both thermometers in :ice :vaious temps of heating water :boiling water
*record temp. against length
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| show | *find mass of calorimeter mc and mass of water mw
*measure temp. of cold water & calorimeter Θ1
*switch on joulmeter and current and allow temp. rise of 15°C
*record reading on joulmeter Q and highest temp. reached Θ2
*use E=(mcΔΘ)w+(mcΔΘ)c
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| show | *crush and dry ice (0°C)Θi-ice
*get mass of calorimeter mc & water mw
*heat water 5°C above room temp. Θi-water
*add ice stir, temp. to 5°C below room temp.Θf
*mass of all after
*(mcΔΘ)i+(ml)i=(mcΔΘ)w+(mcΔΘ)c
*find l
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| Measure Specific Latent Heat of Vaporisation of Water | show 🗑
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| The Focal Length of a Concave Mirror *GRAPH | show 🗑
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| To Verify Snell's Law and hence measure the refractive index of glass. *GRAPH | show 🗑
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| Refractive index of a liquid by measuring real and apparent depth | show 🗑
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| show | *same as concave mirror
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| show | *laser 90° to wall(metre stick) and diffraction grating
*n=0 at 50cm mark
*measure distance from n=0 to n=1, n=2 & n=3
*use trig TanΘ=o/a to find Θ for each n value
*formula: nλ=dSinΘ to figure out λ(wavelength)
*d=1/x÷1000 when x is in mm
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| show | *sonometer length as long as possible
*tension constant value: when lowest frequency causes resonance
*strike next highest tuning fork and adjust length until resonance occurs
*get range of values: f, l & 1/l
*all values of fxl should be approx same
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| show | *length about 1/3 of max length- keep constant
*use lowest frequency tuning fork and adjust tension until resonance occurs
*record range of values for tension and frequency
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| To measure the Speed of Sound in air using a Resonance tube. *GRAPH | show 🗑
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| show | *circuit with rheostat, power supply, coil of wire, voltmeter & ammeter
*by varying rheostat, current and p.d are varied
*measure a series of values for I and corresponding V
*I∝V
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| show | *circuit: power supply ammeter rheostat heating coil
*known volume of water:calorimeter
*current of 0.5A & start clock
*note time passed
*turn off, stir and note highest temp. reached
*repeat with larger I values
*all ΔΘ/I^2 values should be equal
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| show | *check micrometer for 0 error & note
*measure diameter: a few points, correct & get average
*ensure wire is straight & clamp to metre stick
*switch on ohmmeter & connect probes
*allow for resistance of leads
*resistance between 2 points
*ρ=Rπd^2/4l
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| show | *coil of wire to ohmmeter note resistance
*boiling tube of glycerol, note temp (also temp. of coil)
*measure approx. resistance of coil
*measure resistance of leads (subtract)
*fill beaker with cold water
*for each 10°C rise record resistance &temp.
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| Investigate the variation of Resistance of a thermistor with temperature *GRAPH | show 🗑
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| Investigate variation of current (I) with p.d (V) :Metallic Conductor :Filament Bulb :Copper Electrodes :Semi-conductor | show 🗑
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