Required Practicals

Question 1

Stretching a spring

Answer 1

1) Read unstretched length of spring
2) Hand 1N weight on string read position
3) Repeat keep adding 1N

AVOID SYSTEMATIC ERROR BY LINING 0cm with bottom of spring
Extension: Unstretched - EacReading

Question 2

Acceleration practical

Answer 2

1) Draw Chalk lines every 10cm
2) Release Car
3) Record time car passes each distance marker (phone)
4) repeat experiment - reduce mass on end of string place on car (keeps total mass same)

Question 3

Magnetic Flux Density

Answer 3

1) Place Magnet on Balance
2) Tare Balance, measure mass when known current flowing
3) Convert to Newtons
4) Measure Length of wire in field
5) Rearrangr F= BIL to calculate B

Question 4

Show that matte black best emitter + absorber

Answer 4

1) 2 plates paint one shiny one matte black

2) switch on heater start timing

3) record time it takes for Vaseline to melt and drawing pins to fall off

4) drawing pin falls off matte black first

Question 5

Show that Matte Black best emitter + Absorber NO. 2

Answer 5

Use Leslie Cube with IR Detector
Fill Cube with Hot Water
Point Infared Detector at each 4 surfaces record amount of IR emitted

Question 6

Measuring Wave Length (Ripple Tank)

Answer 6

Record Waves with Phone
Freeze Image + Place Ruler on image
Measure Distance Total of 10 Wavelengths
Find 1 Wavelength / 10

Question 7

To find Frequency

Answer 7

Record timer and No. Of Waves count No. Waves in 10s ÷ 10