An Electrical Motor Spins at a Constant 2857

question 7

Multiple Choice

An electrical motor spins at a constant 2857.0 rpm.If the armature radius is 2.685 cm,what is the acceleration of the edge of the rotor?

• A)2403 m/s²
• B)844.4 m/s²
• C)241,100 m/s²
• D)84.40 m/s²

---

Definitions:

Population Growth

The increase in the number of individuals in a population, often measured by birth rate minus death rate plus migration.

Economic Development

Economic Development refers to the process by which a region improves the well-being of its citizens through economic growth, redistribution of wealth, and improvements in quality of life.

Birth Rate

The number of live births per thousand of population per year.

Death Rate

The number of deaths in a particular population, scaled to the size of that population, per unit of time.