SPM Percubaan Physic (Section B)
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Transcript of SPM Percubaan Physic (Section B)
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Specific Heat Capacity
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Transformer
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Wave
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ModelShape of the
wall barrier
Depth of the
sea water
Gap between
the wall
barriers
Base between
the wall
barriers
P
Shallow None Small
Q
Deep Large Large
R
Shallow None Small
S Deep Small Large
Explain the suitability of characteristic in Table 12. Determine the suitable model.
Give your reasons for your choice.
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Most suitable is Q
Characteristic Reason
High amplitude louder
Longer wavelength Can diffract easily
Low damping Can be heard clearly
Low frequency Low pitch/ distinguished from othersound/can be heard by human
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Electricity
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Force and Pressure
Sugestion Reason
Cylinder with a larger diameter at the lowerpart/diagram
To sink the hydrometer and prevent theoverturned .
Lead shots / diagram To enable it stand upright
Cylinder with small diameter at the top /diagram
Small scale reading can be combined
Glass bulb at the lower partScale can be made larger or smaller from thedensity of water
Filled with air / diagramCan measure the density of the higher andlower than the water
Hydrometer is placed in low density liquid Mark the low level
Hydrometer is placed in high density liquid Mark the high level
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Electromagnet
Change cumutator by two slip rings/diagram current flow as a.c
Add the number of coils/diagram increase the induced current
Increase the thickness of wire reduce resistance /
more induced current.
Increase the strength of magnet increase the induce current
Curved magnet catapult field more stronge
Cylinder shaped iron core increase the strength of
electromagnet
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Force and motion
Most suitable is C
Characteristic Reason / Explanation
Spring constant is small More elastic
Density is small The spring is lighter
Elastic limit is high Elastic for a large range of fore /Can support the large force
The strength is high Can support the large force
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Radioisotopes
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