Relating to the Economics in Practice on Page 338: a Number

question 4

Multiple Choice

Relating to the Economics in Practice on page 338: A number of agencies in the federal government, including the EPA, use the social cost of carbon as their internal carbon fee. In 2015, this price they were paying was ________ per ton of carbon.

• A) $18
• B) $39
• C) $62
• D) $100

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Definitions:

Examine If Closed

A control system operation that checks whether a specific circuit or contact is in a closed (energized) state.

Examine If Open

Examine If Open is a control logic command used in programming, often in PLCs, to check if a circuit or contact is open before executing further instructions.

Output Energize

A control logic action used in programmable logic controllers (PLCs) to activate an output device.

Input Energize

The process by which an input signal activates or powers a circuit or device.