Question
A spherical ball made of steel when dropped in mercury
container will –Solution
The density of steel usually ranges between 7.75 and 8.05 g/cm3 and the densityof mercuryis 13.534 g/cm3. Mercuryis denserthansteelthiswillmeanthatthebuoyant force is large enough to float the steel ball. Different materials usually have different densities, so density is an important concept regarding buoyancy, purity and packaging.
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exactvalue.)
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.)...
{1722.95 + 5.05 × 648.08 – (2728.06 ÷ 22.05)} = ?
(?)2 + 9.113 = 31.92 – 39.03
(124.99)² = ?
13³ + 1.3² + 1.03¹ + 1.003 =?
149.78% of 319.87 – 199.83% of 45.45 = 130.03% of (? × 12.01)
(√360.99 + 161.14) ÷ 5 × 249.98 = ?
15.232 + 19.98% of 649.99 = ? × 4.99
- 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.)
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