Incorrect Did you forget a unit symbol? A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. m (50. =) S 1 s cm 10 cm S x10 J O|O

A basketball game at the University of Connecticut's Gampel Pavilion attracted 10,000 people. The building's in-terior floor space has an area of 1.71105 ft2. Tickets to the game sold for $22.00. Senior citizens were given a 20% discount. How many significant figures are there in each quantity? (Your answer may include the words ambiguous and exact.)

For the pin shown in Fig. 2.5, why is the third figure determined for the length of the pin uncertain? Considering that the third figure is uncertain, explain why the length of the pin is indicated as 2.85 cm rather than, for example, 2.83 or 2.87 cm.

When a large or small number is written in standard scientific notation, the number is expressed as the product of a number between 1 and 10, multiplied by the appropriate power of 10. For each of the following numbers, indicate what power of 10 would be appropriate when expressing the numbers in standard scientific notation. a. 84,961,306 b. 0.4870 c. 0.000033812 d. 3,890,406,000,000

A lap in most tracks in the United States is 0.25 mi (English lap). In most countries that use the metric system, a metric lap is 0.40 km. A champion marathon runner covers a mile in about 5.0 min. How many minutes will the runner take to run an English lap? A metric lap?

Write the equivalency for each conversion factor: a)3feet1yardb)1meter100centimetersc)1milliliter20drops

An individual weighs 135 lb and is 5 ft 4 in. tall. What are the persons equivalent measurements in kilograms and meters?

a 21.7 m to cm, b 517 m to km, c 0.666 km to cm

What is the average density of a single marble shown here? The total mass of the three marbles is 96.5 g. The photograph on the left shows the graduated cylinder filled with 61 mL of water before the marbles were added.

Distinguish precisely and in scientific terms the differences among items in each of the following groups. a Coefficient, exponent, exponential b Equivalency, conversion factor, quantity, value, unit c Analyze, identify, construct, check d Mass, weight e Unit, kilounit, centiunit, milliunit f Significant figures, uncertain digit g Uncertainty, exact number h The symbols = and i Fahrenheit, Celsius, kelvin j Direct proportionality, proportionality constant k Density, mass, volume