Final answer:
The specific masses of Jacob's four cabin bags are not provided, making it impossible to answer which bag has a different mass. The concepts of mass and weight, as well as significant figures and measurement, are discussed in the text.
Step-by-step explanation:
The question pertains to identifying which one of Jacob's four cabin bags does not have the same mass as the others. However, the provided text contains no specific masses for the bags that would allow for a comparison. Instead, it discusses principles related to significant figures, the scientific method, and weight versus mass in differing gravitational conditions.
To determine which bag does not have the same mass as the others, one would need the actual mass values of each bag. As these are not given in the information provided, it is not possible to answer this question.
Understanding the difference between weight and mass is important in Physics. Weight is the force exerted by the mass due to gravity, and it would change if a person or object were taken to a place with different gravity, such as another planet. However, mass is a measure of the amount of matter in an object and remains constant regardless of location.