The correct option is A.
Resonance is the phenomenon by which a vibrating system or an external force drives another system to oscillate with greater frequencies at specific frequencies. These specific frequencies are called resonant frequencies. At resonance frequencies, small periodic driving forces have capacity to produce large amplitude oscillation.<span />
Answer:
The International Date Line provides a standard means of making the needed readjustment: travelers moving eastward across the line set their calendars back one day, and those traveling westward set theirs a day ahead.
There are approximately 4000 different minerals and each of those minerals has a unique set of physical properties. These include: color, streak, hardness<span>, </span>luster<span>, diaphaneity, specific gravity, </span>cleavage<span>, fracture, </span>magnetism<span>, </span>solubility<span> and many more. These physical properties are useful for identifying minerals.
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