A Horizontal Desk Surface Measures 1

question 30

Multiple Choice

A horizontal desk surface measures 1.3 m by 1.0 m. If the Earth's magnetic field has a magnitude of 0.44 mT and is directed 65° below the horizontal, what is the magnetic flux through the desk surface?

• A) 1.1 × 10^-3 Wb
• B) 5.2 × 10^-4 Wb
• C) 3.2 × 10^-4 Wb
• D) 7.3 × 10^-3 Wb

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Definitions:

Intrusions

refer to bodies of igneous rock that form when magma cools and solidifies within the crust of a planet.

Copper

A reddish-brown, ductile metal that is an excellent conductor of electricity and heat, widely used in electrical wiring and plumbing.

Cement And Concrete

A specific construction material where cement, a powdery substance, is mixed with water, sand, and gravel to create concrete, a solid, durable building material.

Limestone

A sedimentary rock mainly composed of calcium carbonate, often formed from marine organisms.