When 90 KJ Is Removed from a 2-Kg Copper Bar $\circ$

question 58

Multiple Choice

When 90 kJ is removed from a 2-kg copper bar, its temperature drops from 200 ^$\circ$ C to 85 ^$\circ$ C.The specific heat of iron is

• A)0.16 kJ/kg.^\(\circ\)C.
• B)0.19 kJ/kg.^\(\circ\)C.
• C)0.23 kJ/kg.^\(\circ\)C.
• D)0.39 kJ/kg.^\(\circ\)C.

---

Definitions:

Coevolution

The reciprocal adaptation of two or more species that occurs as a result of their close interactions over a long period.

Bat-pollinated

Refers to plants that are primarily pollinated by bats, a process crucial for the reproductive success of certain plant species.

Night-blooming

Night-blooming characterizes plants that open their flowers or become active during the night, often for reasons such as attracting specific pollinators or conserving water.

Pollinator

An organism that moves pollen from the male anthers of a flower to the female stigma to achieve fertilization and produce seeds.