On the Mohs Hardness Scale,quartz Has a Hardness of 7

question 35

Multiple Choice

On the Mohs hardness scale,quartz has a hardness of 7 and calcite has a hardness of 3.This means that _______.

• A) calcite can scratch quartz
• B) quartz is four times harder than calcite
• C) calcite is four times harder than quartz
• D) quartz can scratch calcite

---

Definitions:

Long Run

A period in which all factors of production and costs are variable, allowing full adjustment to any change in market conditions.

Economic Profit

The difference between total revenues earned from production and the total opportunity costs of all inputs used in production.

Long Run

A period of time in economics during which all factors of production and costs are variable, allowing for full industry adjustment to changes in market conditions.

Losses

Losses refer to the amount by which expenses exceed revenues in a particular period, indicating a negative financial performance for a business.