A woman who is trying to conceive ovulates on day 12 of her monthly menstrual cycle. An ovum can live for up to 24 hours after it is released. Sperm can live for about three days after entering the female reproductive tract. On which days of the woman’s menstrual cycle would sexual intercourse be most effective in achieving conception? days 8, 9, and 10 days 11, 12, and 13 days 12, 13, and 14 days 13, 14, and 15

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

6 cos 34, 6 sin 34 trig

wavelength divides in half and speed stays the same.

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