A Rock Is Suspended from a Scale Reads 20

question 8

Multiple Choice

A rock is suspended from a scale reads 20.0 N. A beaker of water (having a density of 1000 kg/m³) is raised up so the rock is totally submerged in the water. The scale now reads 12.5 N. What is the density of the rock?

• A) 1.60 × 10³ kg/m³
• B) 2.50 × 10³ kg/m³
• C) 2.33 × 10³ kg/m³
• D) 3.00 × 10³ kg/m³
• E) 2.67 × 10³ kg/m³

---

Definitions:

Tax

A financial charge or levy imposed by a government on individuals, corporations, or transactions to fund public expenditures.

Consumer Surplus

The gap between what consumers are prepared and able to spend on a product or service compared to what they end up paying in reality.

Per-Unit Burden

Represents the tax amount charged on each unit of a good or service, reflecting the financial impact of taxes on production and consumption.

Tax

Compulsory charges levied by a government on individuals or corporations to finance government activities and public services.