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A spaceship traveling at constant velocity passes by Earth and later passes by Mars.In which frame of reference is the amount of time separating these two events the proper time?
Hispanic
Referring to people, cultures, or countries related to Spain or Spanish-speaking Latin America.
Global Warming
The long-term rise in Earth's average surface temperature, largely due to human activities such as burning fossil fuels, which release greenhouse gases.
Sea Levels
The average height of the ocean's surface between high and low tide, which can change due to factors like climate change and tectonic activity.
Respiratory Illnesses
Respiratory illnesses are diseases that affect the lungs and other parts of the respiratory system, such as asthma, pneumonia, and chronic obstructive pulmonary disease (COPD).
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