Visit this PhET density simulation (http://openstaxcollege.org///16phetmasvolden) and select Mystery Blocks. (a) Pick one of the Mystery Blocks and determine its mass, volume, density, and its likely identity. (b) Pick a different Mystery Block and determine its mass, volume, density, and its likely identity. (c) Order the Mystery Blocks from least dense to most dense. Explain.

Which of the following are extensive properties: mass, volume, and/or density?

a. mass only

b. volume only

c. density only

d. mass and volume

e. volume and density

A block of mass $m$ undergoes a one-dimensional elastic collision with a block of mass $M$ initially at rest. If both blocks have the same speed after colliding, how are their masses related?

Which is the correct equation for calculating density? (a) Density = Mass/Volume (b) Density = Mass/Weight (c) Density = Volume/Mass (d) Density = Volume/Weight

Explain how gas density is related to molar mass and temperature.

Indicate whether each of the following can be determined exactly or must be measured with some degree of uncertainty: (a) the number of seconds in an hour (b) the number of pages in this book (c) the number of grams in your weight (d) the number of grams in 3 kilograms (e) the volume of water you drink in one day (f) the distance from San Francisco to Kansas City

Visit this PhET density simulation (http://openstaxcollege.org/l/16phetmasvolden) and select Custom Blocks and then My Block. (a) Enter mass and volume values for the block such that the mass in kg is less than the volume in $\mathrm{L}$. What does the block do? Why? Is this always the case when mass < volume? (b) Enter mass and volume values for the block such that the mass in kg is more than the volume in L. What does the block do? Why? Is this always the case when mass > volume? (c) How would (a) and (b) be different if the liquid in the tank were ethanol instead of water? (d) How would (a) and (b) be different if the liquid in the tank were mercury instead of water?

How many significant figures are contained in each of the following measurements? (a) 53 cm (b) $2.05 \times 10^{8} \mathrm{m}$ (c) 86,002 J (d) $9.740 \times 10^{4} \mathrm{m} / \mathrm{s}$ (e) 10.0613 $m^3$ (f) 0.17 g/mL (g) 0.88400 s

A $0.50\ \mathrm{kg}$ mass is suspended on a spring that stretches $3.0\ \mathrm{cm}$. (a) What is the spring constant? (b) What added mass would stretch the spring an additional $2.0\ \mathrm{cm}$? (c) What is the change in potential energy when the mass is added?

The period of oscillation for a mass-on-a-spring system is $0.22 \mathrm{~s}$. If $m=3.5 \mathrm{~kg}$, what is the spring constant of the spring?

Indicate the SI base units or derived units that are appropriate for the following measurements: (a) the length of a marathon race (26 miles 385 yards) (b) the mass of an automobile (c) the volume of a swimming pool (d) the speed of an airplane (e) the density of gold (f) the area of a football field (g) the maximum temperature at the South Pole on April 1, 1913

What is the spring constant of a spring that stretches 12 cm when an object weighing 24 N is hung from it?

A mass weighing 8 lb stretches a spring 6 in. What is the spring constant for this spring ?

A force of 5.2 N stretches a certain spring by 14 cm. What is the spring constant of the spring?