X Unit 2 Set 1 - Spring '23.docx.pdf Q Y 1 / 1 TT ... Unit 2 Concepts and Problems --- Set #1 Scientists measure lots of things while investigating nature, the human body, or some engineered structure or object. They record lots of data. This data usually consists of a number (the quantity) and a unit (to let someone know what is being measured). For example, a length of a copper pipe might be recorded as 13.5 m. A sample of human blood might be recorded as 15 dL. We need to be comfortable in understanding how to visualize these measurements so that we can make comparisons quickly and accurately. We may also need to perform calculations with these numbers or even just convert these measurements to another type of unit. This conversion often changes the quantity. Write the number 5.20 x 10" in decimal notation. If this was a quantity of meters, rewrite the measurement using a metric prefix (such as 4 km). An engineer measures an iron rod as having a length of 42.5 m. What is the length of this iron rod in cm? In inches? In ft? In km? The conversion factor for cm to inches is 2.54 cm = 1 in. The conversion factor for inches to feet is 12 in. = 1 ft. A chemist measures out a volume of a solvent for a chemical reaction. The volume in the graduated cylinder reads (according to where the meniscus of the liquid in the cylinder) 22.5 mL. What is the volume of the solvent in L? In cm? In dL? In AL? A sheet of aluminum has a length of 15.6 mm and a width of 10.5 mm. What is the area of this sheet in units of cm'? (Change to cm first.) M 31 O Sep 18 9:05X Unit 2 Set 2 - Spring '23.docx.pdf Q Y 1 / 1 TT ... Unit 2 Concepts and Problems --- Set #2 Write the measurement 5,600,000,000 s in scientific notation. Then write it as a prefixed unit of time (e.g. 3.4 ns) using the appropriate letter to match the 10" that you have after writing it in scientific notation. Convert the following measurements to a different unit. 65 m to mm 0.0105 L to mL 3.00 x 10"s to us A gigantic cube of iron has a length of 10.0 km, a width of 10.0 km, and a thickness of 10.0 km. What is the volume of this block in units of km'? In Mm? Sep 18 9:06 1 9 8