Add of 0.724 and 0.15 following the rules for significant figures. a. 0.9 b. 1 c. 0.87 d. 0.874 2. An example of physical quantity is a. Universal Law of Gravitation b. Coulombs Law c. Newton’s Law of Motion d. Height 3. Liquid nitrogen is often used to perform entertaining low-temperature physics demonstrations. Nitrogen gas liquifies at a temperature of -346 degrees Fahrenheit. What is its temperature in degrees celsius? a. 100 degrees Celsius b. 63 degrees Celsius c. 1000 degrees Celsius d. -210 degrees Celsius

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