If 50 KJ of Heat Flows into a System and 35

question 78

Multiple Choice

If 50 kJ of heat flows into a system and 35 kJ of work is done by the system, then what is the change in internal energy?

• A) 85 kJ
• B) 70 kJ
• C) 65 kJ
• D) 15 kJ
• E) 10 kJ

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Definitions:

Great Plains

A vast flatland that stretches across the central portion of North America, characterized by its grassy landscape and known for agriculture and ranching.

Plains Settlers

Individuals and families who migrated to settle the Great Plains of the United States during the 19th and early 20th centuries, often facing harsh conditions and conflicts.

Reservation Policy

A government policy that sets aside specific areas of land (reservations) for indigenous peoples, often with imposed restrictions on land use and sovereignty.

Backcountry Farmers

Agriculturalists living in rural, often remote areas of the country, historically known for their self-reliance and small-scale farming.