# unit 5 assignment science

unit 5 assignment science

For this assignment, you will complete the Unit V problem solving practice assignment worksheet. This assignment will allow you to demonstrate what you have learned in this unit. Instructions for completing this assignment are located on the worksheet. Click here to access the template for this assignment. Save all of your work directly to the template and submit it in Blackboard for grading. Information about accessing the grading rubric for this assignment is provided below
Unit V Problem Solving Worksheet

This assignment will allow you to demonstrate the following objectives:

• Identify the building blocks of matter to include their influence on physical properties.
o Identify the atomic mass and number of atoms in elements by utilizing the periodic table.
o Find the relation betweenmass, density, and volume.
o Distinguish applied force, spring constant, and displacement using Hooke’s law.

Instructions: Choose 10 of the 12 problems below. Show your work. Answer the questions directly on this document.

1. Consider two stable isotopes, helium-3 and helium-4. How many neutrons and protons are there in each isotope? What are the mass numbers?

2. If two protons and two neutrons are added to the nucleus of a carbon atom, what nucleus does it become?

3. Calculate the molecular mass of hydrogen sulfide, H2S in atomic mass unit u. Use the periodic table of Figure 11.9 on. p.216 in the textbook.
4. Which has the greater density: 100 kg of ice or 10 kg of gold? Consult theTable 12.1 on p.230 in the textbook.

5. What is the volume of 1,000 kg of ice? Consult theTable 12.1 on p.230 in the textbook.

6. How many gold atoms are in a 1 kg gold bar? The chemical symbol of gold is Au. Consult thePeriodic Table inFigure 11.9 on p. 216 in the textbook.

7. There are two water containers: a cube and a sphere. The length of side of the cube is 3 m and the radius of the sphere is 3 m. When the two containers are full of water, which container contains more mass?

8. If you were scaled down to half your size, what would you expect of your strength?

9. A force of 100 N is required to squeeze a hand exerciser that has a coiled spring. The spring is compressed by 0.02 meters. Determine the spring constant.

10. A slingshot has a spring constant of 50 N/m. If you apply a force of 10 N, how far does it stretch?

11. A spring has a spring constant of 300 N/m. Find the magnitude of the force needed to compress the spring by 0.03 m.

12. A 20-coil spring has a spring constantof 100 N/m. Suppose you cut this spring in half. That is, there are two 10-coil springs. Find the spring constant of the 10-coil spring.