An Empty Railroad Car Traveling at a Constant Speed Strikes

question 37

Multiple Choice

An empty railroad car traveling at a constant speed strikes a second car at rest.The second car,being full with passengers,has twice the mass of the first car.If the cars lock together as a result of the collision,the ratio of the initial to the final kinetic energies of the system is

• A)1.
• B)1/3.
• C)3.
• D)1/9.
• E)9.

Define and distinguish between conductors, semiconductors, and insulators based on electron configuration.

Familiarize with the methods of electricity generation and basic laws of physics regarding electricity.

Understand the basic principles and components of capacitors.

Identify and describe the physical and operational characteristics of capacitors.

---

Definitions:

Polymorphic

In computing, it refers to the ability of objects to process data differently based on their data type or class; in biology, it indicates the occurrence of two or more clearly different morphs or forms.

Monomorphic

Characterized by having a single shape or form, often used in the context of genes or polymorphism.

Reactance

A psychological response wherein individuals feel the need to regain freedom or control when they perceive it as being taken away.

Independence

The state or quality of being self-reliant and free from outside control, capable of making decisions and acting on one's own.