1. To determine the density of a rectangular metal bar, Nadine-dong made the following measurements: length of 2.4 dm; width of 8.53 cm; height of 10 mm; mass of 3.6074 g. Calculate the density of the metal in kg/m3. 2. The speed of sound in air at 313 K is about 354.94 m/s. Calculate this speed in miles per hour.
1. To determine the density of a rectangular metal bar, Nadine-dong made the following measurements:
length of 2.4 dm; width of 8.53 cm; height of 10 mm; mass of 3.6074 g. Calculate the density of the
metal in kg/m3. 2. The speed of sound in air at 313 K is about 354.94 m/s. Calculate this speed in miles per hour.
3. Caffeine is a substance whose aroma can be detected by the human nose in the smallest amount. The
threshold limit is 4.3 × 10^-11 grams per liter of air. If the current price of 25 g of caffeine is PhP 18.1,
determine the cost (in PhP) to supply enough vanillin so that the aroma could be detected in a large
aircraft hangar with a volume of 3.0 × 10^8 ft^3.
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