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A student writes four incorrect statements shown in the table below - OCR - A-Level Physics A - Question 1 - 2013 - Paper 1
Question 1
A student writes four incorrect statements shown in the table below. The error in each statement is circled. Write the correct unit or number; one has already been d... show full transcript
Worked Solution & Example Answer:A student writes four incorrect statements shown in the table below - OCR - A-Level Physics A - Question 1 - 2013 - Paper 1
Step 1
Step 2
Calculate the density of the test tube glass in kg m^-3.
Answer
To calculate the density, we first find the volume of the submerged part of the test tube:
Volume = 82 cm³ - 75 cm³ = 7 cm³.
Next, we convert cm³ to m³:
.
Now, we use the density formula:
ext{Density} = rac{ ext{mass}}{ ext{volume}}
where mass of the glass test tube is 1.6 x 10^{-2} kg. Thus:
ext{Density} = rac{1.6 imes 10^{-2} ext{ kg}}{7 imes 10^{-6} ext{ m}^3} = 2285.71 ext{ kg m}^{-3}.
Rounding this, the density is approximately 2.3 x 10^3 kg m^-3.