Someone in Earth's Rest Frame Says That a Spaceship's Trip

question 71

Multiple Choice

Someone in Earth's rest frame says that a spaceship's trip between two planets took 10.0 y,while an astronaut on the space ship says that the trip took
What is the speed of the spaceship,assuming the planets are at essentially at rest?

• A)0.816 c
• B)0.735 c
• C)0.975 c
• D)0.384 c

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Definitions:

Cardiac Muscle Cells

Specialized muscle cells found in the heart that are responsible for generating the rhythmic contractions that pump blood through the body.

Actin

A globular multi-functional protein that forms microfilaments, playing a key role in muscle contraction, cell motility, and the cell's structural framework.

AV Node

The atrioventricular node is an element of the heart's conduction system that regulates heart rate by decelerating the electrical impulse prior to its transfer from the atria to the ventricles.

Action Potential

Change in membrane potential in an excitable tissue that acts as an electric signal and is propagated in an all-or-none fashion.