One 20-Year-Old Twin Brother Takes a Space Trip with a Speed

question 47

Multiple Choice

One 20-year-old twin brother takes a space trip with a speed of 0.80c for 30 years according to a clock on the spaceship. Upon returning to the Earth, what is his own age and the age of the Earth-based twin brother?

• A)20; 30
• B)30; 50
• C)40; 60
• D)50; 70
• E)70; 90

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Definitions:

Exclusive Distribution

A distribution strategy where a producer sells its product or service only through a single retailer or distributor in a specific territory.

Selective Distribution

A distribution strategy where a product is sold at a limited number of outlets in geographical areas to maintain exclusivity or control over the brand.

Intensive Distribution

A strategy where a company sells its products in as many outlets as possible to maximize coverage and sales.

Personal Pen

A writing instrument chosen or designed to meet an individual's specific preferences or needs, often considered personal property.