Newspaper Vending Machines Are Often Built So That Customers Can

question 178

Multiple Choice

Newspaper vending machines are often built so that customers can pay to lift a door and take a paper off a pile of daily newspapers. Newspaper distributors are not concerned about customers taking the whole stack of papers because

• A) the total utility of a daily newspaper is zero.
• B) the marginal utility of any one daily newspaper is zero.
• C) the marginal utility of a second daily newspaper is zero.
• D) the price of a daily newspaper is relatively low.

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Definitions:

Nosepiece

A rotating part of a microscope that holds the objectives and can be turned to change from one magnification to another.

Electrical Cord

A length of insulated wire used to conduct electricity from a power source to an electrical appliance or device.

Condenser

In scientific equipment, a device to condense gaseous substances into liquid.

Aperture

A term commonly used to describe the opening in an optical system through which light passes, such as in a camera or telescope.