Categorize the following objects as conductors or insulators: a. copper wire b. your body when your skin is wet c. a plastic comb

Visit the AARP’s Financial Planning and Retirement website at www.aarp.org. Locate Work and Retirement Tools and then the Retirement Planner. The calculator allows you to enter information about your retirement plans, your current level of assets, expected benefits from other sources, and your spouse’s financial data and needs. Use the AARP Retirement Planning Calculator to enter your specific data and assumptions. Look at the list of parameters toward the bottom of the page. Which one would be the easiest for you to change to make your goals attainable? Some people might choose to work longer, some to spend less in retirement, and so on. Choose the combination of factors that would work best for you, and then recalculate to see the new results. Can you come up with a plan that has a combination of factors that offer you an acceptable level of comfort?

Classifying Classify the following materials as conductors or insulators: wood, paper clip, glass, air, paper, plastic, steel nail, and rubber.

Explain why the statement,“Water is the solvent in a solution,” is not always true.

Describe how you could determine whether the image formed by a lens or mirror is a real image or a virtual image.

If $\overleftrightarrow{A B}$ and $\overleftrightarrow{CD}$ intersect at point K, how many planes are needed to contain the two lines?

How did the economic policies of the Soviet Union affect its human geography? Think about: industrialization, collective farms.

Diagram what will happen if a positively charged rod is brought near the following; a. a meta washer b. a plastic disk

By substituting a number for s or t, show that the equation is not an identity. $\cos t=\sqrt{1-\sin ^{2} t}$

Perform the indicated operations and simplify the expression.

$$\dfrac{\dfrac{1}{5x}-\dfrac{3}{5}}{\dfrac{2}{x}+\dfrac{1}{5}}$$

A pole supporting a wind turbine is constructed of solid steel and is in the shape of a frustum of a cone. It measures 62.5 m high, and the diameter of the pole at the bottom and top are 3.88 m and 1.90 m, respectively. What is the volume of the pole?

Which of these statements about intelligence and aging is true? a. Older adults surpass younger adults at recalling information. b. Older adults outperform teens at prospective memory. c. There is less variability among 70-year-olds than among 20-year-olds in capacity to learn and remember. d. When asked to recognize words, older adults show little memory decline. e. Older adults are less likely than younger adults to make mistakes when, remembering meaningless information.

Provide a counterexample to the statement All numbers less than 0 are negative integers.

Evaluate the determinants.

$$\left| \begin{array} { r r r r } { 1 } & { 1 } & { 1 } & { 1 } \\ { 1 } & { 2 } & { 3 } & { 4 } \\ { - 2 } & { 0 } & { 2 } & { 4 } \\ { 3 } & { - 3 } & { 2 } & { - 2 } \end{array} \right|$$