What Is the Change in Internal Energy of the System

question 45

Multiple Choice

What is the change in internal energy of the system (ΔU) if 65 kJ of heat energy is evolved by the system and 62 kJ of work is done on the system for a certain process?

• A) -3 kJ
• B) -127 kJ
• C) -65 kJ
• D) 3 kJ
• E) 127 kJ

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Definitions:

UPS

Uninterruptible Power Supply, a device that provides emergency power to a load when the input power source fails.

Wake-on-LAN

A networking standard that allows a computer to be turned on or awakened from sleep mode by a network message.

PXE

Preboot eXecution Environment, a technology that allows computers to boot up using software received through a network, without the need for storage devices.

NFC

Near Field Communication (NFC) is a short-range wireless connectivity technology allowing for secure communication between devices over a distance of a few centimeters.