If, as a Pioneer, You Wished to Warm Your Room

question 74

Multiple Choice

If, as a pioneer, you wished to warm your room by taking an object heated on top of a pot-bellied stove to it, which of the following 15-pound objects, each heated to 100°C, would be the best choice? The specific heat capacity (in J/g·°C) for each substance is given in parentheses. Iron (0.450) , copper (0.387) , granite (0.79) , gold (0.129) , water (4.184) .

• A) iron
• B) copper
• C) granite
• D) gold
• E) H₂O

---

Definitions:

Sequencer Instructions

Instructions used in programmable logic controllers (PLCs) to execute a series of steps in a predefined order, often used for repetitive or sequential operations.

Nonretentive

Referring to a device or process that does not retain data or state upon power loss or reset.

Outputs

The results produced by a computer or controller, typically after processing input data, which are then transmitted to other devices or users.

Sequencer

A mechanical, electric, or electronic device that can be programmed so that a predetermined set of events occurs repeatedly.