1. A crime scene investigator measures a tire mark on the street to be 12,200 cm

Question

1. A crime scene investigator measures a tire mark on the street to be 12,200 cm. How many km is this? (Express your answer in standard notation not scientific notation)

2. Convert 7.5 L into mL. Express your answer with the correct sig figs and unit. Express your answers in standard notation, not scientific notation.

3. If a Chipotle burrito measures 19.05 cm, how many inches is this? Express your answer with the correct sig figs and unit. Express your answers in standard notation, not scientific notation.

value unit

4. Betty weighs 133.5 pounds. What is her mass in grams? Express your answer with the correct sig figs and unit. Express your answers in standard notation, not scientific notation.

value unit

5. Calculate the volume of the box below. Show appropriate significant figures and units. Note: This box is measured in inches.

10,368 in3

pick one......

6. An object weighs 9.0330 g. When the object is put into a graduated cylinder that contains 24.9 mL of water, the water levels rises to 30.2 mL. Calculate the density of the object.

7. Gold has a density of 19.31 g/cm3. What is the mass, in grams, of a gold nugget that displaces a volume of 12.6 mL?

8.   Select ["kelvin", "heat", "fahrenheit", "temperature", "celcius"]         is a measure of the average energy of a single particle, and                       

   [ Select   ["fahrenheit", "kelvin", "celcius", "temperature", "heat"]         is a measure of the total energy of all particles.

Explanation / Answer

1. The answer is 0.12 Km

Given, measure of a tire mark on the street = 12,200 cm.

Now, we know 1 Km = 1000 m and 1 m = 100 cm

                         Therefore 1 Km = 1,000 m x (100 cm/1 m) = 100,000 cm

                                               Or, (1/100,000) Km = 1cm

                                                12,200 cm = 12,200 cm x (1 Km/ 100,000 cm) = 0.12 Km

2. The answer is 7,500 mL.

1L = 1000 mL

Therefore, 7.5 L = 7.5 x 1000 mL = 7,500 mL.

3. The answer is 7.500 inches.

1 inch = 2.54 cm

1/2.54 inch = 1 cm

19.05 cm = 19.05/2.45 inches = 7.500 inches.

4. The answer is 60554.65 g or 60.55 Kg.

1 Kg = 2.20462 lbs

1000 g = 2.20462 lbs

1 lbs = (1000/2.20462) g

133.5 lbs = 133.5 x (1000/2.20462) g = 60554.65 g or 60.55 Kg

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