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The Alternating Current Flowing through the Primary Coil of the Transformer Creates an Alternating Current in the Secondary coil. Explain how!

The alternating current creates an alternating magnetic field across the transformer. A magnetic field develops in the iron core of the transformer. This causes a potential difference to be induced across th...
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Answered by Arthur G. • Physics tutor
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In terms of Electrostatic Forces, Suggest why the ‘Electron Affinity’ of Fluorine has a Negative value.

Electron affinity is the energy released when 1 mole of gaseous atoms each acquire an electron to form 1 mole of gaseous 1- ions. Fluorine has a negative value as energy is released when the electron is gain...
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Answered by Arthur G. • Chemistry tutor
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Describe the Difference Between ‘Faults’ and ‘Joints’ in Rocks.

Whereas faults have relative movement, joints have no movement. This means that although faults show displacement (such as displaced bedding), joints show no displacement.
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Answered by Arthur G. • Geology tutor
16731 Views

Explain how Earthquakes Occur when Stress Stored in Rocks is Released.

Earthquakes occur when the stored stress in the rock exceeds its strength. Energy is released as the rocks fractures and moves in the form of seismic waves. The energy released causes vibrations creating gro...
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Answered by Arthur G. • Geology tutor
8526 Views

State and explain two adaptations of a red blood cell?

Red blood cells have a biconcave disk shape, meaning that it increases their surface area and allows for more rapid diffusion of oxygen into and out of the cell. Red blood cells do not have a nucleus so they...
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Answered by Joe D. • Biology tutor
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