A species of bivalves on one beach is a pale color compared to the same species that is a much darker color on a beach 1100 km to the north. Design an experiment that might explain the differences in shell color.

Suppose you are an inventor in 1900. You are constructing a bicycle of your own design. What could you do to ensure your bicycle efficiently changes the work input into forward motion?

You wish to investigate the properties of different transparent materials and decide to design a refractometer, a device used to measure the refractive index of an unknown liquid. A light beam in the liquid is refracted into a material whose refractive index is known and is less than that of the unknown liquid. The incident beam is adjusted for total internal reflection, and the equation for the angle of total internal reflection is used to determine the unknown index. Provide suggestions for a design for such a device and perform a sample calculation to show how it might work.

Liability, asset, gross profit, net profit, depreciation, and fiscal year are all terms used by accountants. Find out what these words mean, and create an accounting glossary with definitions and examples of the terms used in sentences. You might want to expand the list of terms and work with others in a team to create a larger glossary.

Suppose that we want to design an amplifier that can produce a 100-kHz sine-wave output having a peak amplitude of: 5 V. What is the minimum slew-rate specification allowed for the op amp?

Carbon monoxide is a colorless, odorless gas that binds to hemoglobin at an oxygen-binding site. Indeed, it binds 200 times as tightly as oxygen, accounting for its toxic nature. Even if only one of the four oxygen-binding sites onhemoglobin is occupied by carbon monoxide, and the remaining three are bound to oxygen, oxygen is not released. Explain.

Stuck in the middle of a frozen pond with only your physics book, you decide to put physics in action and throw the 5.00-kg book. If your mass is $62.0 \mathrm{~kg}$ and you throw the book at $13.0 \mathrm{~m} / \mathrm{s}$, how fast do you then slide across the ice? (Assume the absence of friction.)

Using a $50\mathrm{~\mu A}$, $1000\mathrm{~\Omega}$ movement, design a multirange milliammeter having scales of 25 mA, 50 mA, and 100 mA. Show the circuit and component values.

A solar furnace can be constructed by using a concave mirror to reflect and focus sunlight into the enclosure of a furnace. What factors in the design of the reflecting mirror will guarantee that very high temperatures can be reached?

Design an interface named Colorable with a void method named howToColor(). Every class of a colorable object must implement the Colorable interface. Design a class named Square that extends GeometricObject and implements Colorable. Implement howToColor to display the message Color all four sides. Draw a UML diagram that involves Colorable, Square, and GeometricObject. Write a test program that creates an array of five GeometricObjects. For each object in the array, display its area and invoke its howToColor method if it is colorable.

Use the accounting equation to show how to determine the amount of a company’s owners’ equity. How would your answer change if you were analyzing your own household or a single IHOP restaurant? If you know the assets and the owners’ equity of a business, how can you measure its liabilities? Give the equation.

In general terms, describe the energy requirements of passive and active transport:

Design a circuit which provides a dual-tone multi-frequency (DTMF) signal corresponding to the number 9, which is a voltage output composed of a 1477 Hz signal and an 852 Hz signal.

Which of two brands (X or Y) of electric razor shaves closer? Researchers want to design and carry out an experiment to answer this question using 50 adult male volunteers. Here's one idea: Have all 50 subjects shave the left sides of their faces with the Brand X razor and shave the right sides of their faces with the Brand Y razor. Then have each man decide which razor gave the closer shave and compile the results. Identify any flaws you see in the proposed design for this experiment.