A Spaceship with a Constant Speed of 0

question 100

Multiple Choice

A spaceship with a constant speed of 0.800c relative to Earth travels to a star that is 4.30 light-years from Earth. How much time for this trip would elapse on a clock on Earth?

• A) 3.23 y
• B) 5.38 y
• C) 4.40 y
• D) 5.15 y

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Definitions:

Capillaries

The smallest blood vessels in the body, connecting veins and arteries and facilitating the exchange of water, oxygen, carbon dioxide, and many other nutrients and waste substances between blood and tissues.

SA Node

The sinoatrial node, a group of cells in the right atrium of the heart that acts as a natural pacemaker, initiating the heart's electrical impulses.

AV Node

The AV Node, or Atrioventricular Node, is a part of the heart's electrical system that acts as a gatekeeper, controlling the electrical impulses between the atria and ventricles.

Cardiac Conduction

The process by which the heart's electrical system transmits signals, leading to muscle contraction and heartbeats.