A student investigated the density of different fruits - AQA - GCSE Physics - Question 4 - 2021 - Paper 1
Question 4
A student investigated the density of different fruits.
Table 1 shows the results.
Table 1
| Fruit | Density in g/cm³ |
|--------|------------------|
| Apple | 0... show full transcript
Worked Solution & Example Answer:A student investigated the density of different fruits - AQA - GCSE Physics - Question 4 - 2021 - Paper 1
Step 1
What other piece of equipment would the student need to determine the density of each fruit?
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Answer
The student would need a balance or scales to accurately measure the mass of each fruit.
Step 2
Write down the equation which links density (ρ), mass (m) and volume (V).
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Answer
The equation that links density, mass, and volume is:
ho = \frac{m}{V}$$
or equivalently,
$$V = \frac{m}{\rho}$$
Step 3
Calculate the volume of the apple. Give your answer in cm³.
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To calculate the volume of the apple, we use the formula:
V=ρm
Substituting in the values:
V=0.68g/cm385g
Now calculate:
V=125cm3
Step 4
Give the reason why.
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Answer
The measurements cannot be used to show that the method gives precise readings because only one reading was taken. To confirm precision, multiple readings are necessary to ensure that the results are consistent and 'close together'.
