A smoke alarm's battery either creates the charge on the plates or the charge on the ions. Explain.

Thomas Corporation’s adjusted trial balance contained the following liability accounts at December 31, 2017: Bonds Payable (due in 3 years) $100,000, Accounts Payable$72,000, Notes Payable (due in 90 days) $22,500, Salaries and Wages Payable$4,000, and Income Taxes Payable $7,000. Prepare the current liabilities section of the balance sheet.

In $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$, a realistic charge distribution results in each ligand carrying a charge of $-\frac{2}{3}$. In this model, what charge does the Fe centre carry and why is this charge consistent with the electroneutrality principle?

Thomas Corporation's adjusted trial balance contained the following liability accounts at December 31, 2020: Bonds Payable (due in 3 years) $100,000, Accounts Payable$72,000, Notes Payable (due in 90 days) $22,500, Salaries and Wages Payable$4,000, and Income Taxes Payable $7,000. Prepare the current liabilities section of the balance sheet.

Two very long uniform lines of charge are parallel and are separated by $0.300 \mathrm{~m}$. Each line of charge has charge per unit length $+5.20~ \mu \mathrm{C} / \mathrm{m}$. What magnitude of force does one line of charge exert on a $0.0500 \mathrm{~m}$ section of the other line of charge?

A delivery company has a fleet of vans. The annual operating cost $C$ per van is

$$C=0.32 m+2500$$

where $m$ is the number of miles traveled by a van in a year. What number of miles will yield an annual operating cost of $\$ 10,000$?

A charge of $8.0 \times 10^{-7} \mathrm{C}$ experiences a force of 9.0 N when placed 0.02 m from a second charge. What is the magnitude of the second charge?

Why is it unlikely that organic molecules would accumulate in the oceans today?

In bright light, the pupils of the eyes of a cat narrow to a vertical slit 0.30 mm across. Suppose that a cat is looking at two mice 18 m away. What is the smallest distance between the mice for which the cat can tell that there are two mice rather than one using light 560 nm? Assume the resolution is limited by diffraction only.

Write a nuclear equation for the indicated decay of each nuclide. a. U-234 (alpha ), b. Th-230 (alpha), c. Pb-214 (beta), d. N-13 (positron emission), e. Cr-51 (electron capture)

The total revenue R earned (in thousands of dollars) from manufacturing handheld video games is given by R(p) = -25p^2 + 1200p Find the unit price that will yield a maximum revenue. What is the maximum revenue? Explain your results.

A 5.00 $\mu \mathrm{C}$ charge is 0.500 m above a 15.0 $\mu \mathrm{C}$ charge. Calculate the electric field at a point 1.00 m above the 15.0 mC charge.

A number cube labeled 1-6 is tossed. What is the theoretical probability of rolling an odd number?

$$\begin{array} { l } { \text { A } \frac { 1 } { 2 } } \\ { \text { B } \frac { 1 } { 3 } } \end{array}$$

$$\begin{array} { l } { \text { C } \frac { 1 } { 4 } } \\ { \text { D } \frac { 2 } { 3 } } \end{array}$$

Find the equations of the lines passing through $(1,3)$ and having the following characteristics . (a) Slope of $-\dfrac{2}{3}$ (b) Perpendicular to the line $x+y=0$ (c ) Passing through the point $(2,4)$ (d) Parallel to the $x$-axis