Which of the Following Effects Would Extend the Lifetime of a Protostar

question 4

Multiple Choice

Which of the following effects would extend the lifetime of a protostar (before it becomes a star) ,if everything else remained the same?

• A) increase the opacity of the protostar material
• B) increase the luminosity of the protostar
• C) increase the rate of fusion inside the protostar
• D) increase the temperature of the protostar

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Definitions:

Dust Boot

In a disc brake caliper, an accordion-type seal that protects the outside of the piston and the piston bore from debris. In a drum brake wheel cylinder, two dust boots protect the pistons.

Fixed Caliper

A type of brake caliper that does not move relative to the brake rotor and uses multiple pistons on both sides for clamping action.

Steering Knuckle

A pivotal component in a vehicle's steering system that connects the wheel and tire to the suspension system, allowing for steering movement.

Floating Calipers

A disc brake caliper that “floats,” or moves back and forth, on bolts in its mounting hardware when the brakes are applied.