Question
The density of the liquid when
heatedSolution
The mass density of a material varies with temperature and pressure. Increasing the temperature of a substance (with some exceptions) decreases its density by increasing the volume of that substance. In most materials, heating the bottom of a fluid results in convection of the heat from bottom to top of the fluid due to the decrease of the density of the heated fluid.
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
³√? `xx` 32.87 + 59.83 `xx` 28.7665 – 48.8745 `xx` 21.642 = 1085.344
? = 28.04² ÷ (4.01⁵ + 9.89 × 20.20) + 84.56% of (198.76 × 30.03)
(16.16 × 31.98) + 24.15% of 649.99 = ? + 124.34
What approximate value will replace the question mark (?) in the following?
14.98...
1519.98 ÷ 50.48 × 15.12 = ? × 4.16
80.03% of 120.03 + 119.87 × 8.09 ÷ 5.998 = 2.01 ?
30.05% of 360.05 – 25.15% of 99.99 × 3.02 = ?
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