The Crab Nebula Is

question 10

Multiple Choice

The Crab Nebula is

• A) a supernova remnant.
• B) a planetary nebula surrounding a hot star.
• C) a cool, gaseous nebula in which stars are forming.
• D) the active nucleus of a nearby spiral galaxy.

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Definitions:

Coaxial Spring

A type of spring system where two or more springs are arranged along a common axis, usually one inside the other.

Friction Discs

Components within a mechanical clutch that provide the necessary friction to transfer torque from the driving to the driven shaft, often made of materials that improve grip and durability.

Torsional Shock

A sudden and extreme twist or strain on a mechanical component due to rapid torque variation.

Clutch Shaft

A component in a vehicle's transmission system that connects the clutch to the gearbox, transmitting power from the engine to the transmission.