Every day
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The Q mark inside a gold garnet ring may indicate the manufacturer or designer of the ring. It could be a maker's mark or a quality mark used for identification purposes. If you are unsure, you can take the ring to a jeweler for further examination.
To prove a ring is commutative, one must show that for any two elements of the ring their product does not depend on the order in which you multiply them. For example, if p and q are any two elements of your ring then p*q must equal q*p in order for the ring to be commutative. Note that not every ring is commutative, in some rings p*q does not equal q*p for arbitrary q and p (for example, the ring of 2x2 matrices).
4 quarters in a dollar
QG 14k , i got gold... with this stamp on it, i cannot find anywhere what it means? is real gold or not?
Q. D. Leavis was born in 1906.
Q. D. Leavis died in 1981.
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The charge density of a ring is the amount of charge per unit length along the circumference of the ring. It is calculated by dividing the total charge on the ring by the circumference of the ring. Mathematically, the charge density () of a ring is given by the formula: Q / (2r), where Q is the total charge on the ring and r is the radius of the ring.
D. Q. Voigt has written: 'America's leisure revolution'
D. Q. Mayne has written: 'The synthesis of dynamical systems'