What is the center of gravity?
[1862] What is the center of gravity? - What is the center of gravity? - #brainteasers #riddles - Correct Answers: 75 - The first user who solved this task is Neelima Subrahmanyam
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What is the center of gravity?

What is the center of gravity?
Correct answers: 75
The first user who solved this task is Neelima Subrahmanyam.
#brainteasers #riddles
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Dating

The mother of a 17-year-old girl was concerned that her daughter was having sex.
Worried the girl might become pregnant and adversely impact the family's status, she consulted the family doctor. The doctor told her that teenagers today were very willful and any attempt to stop the girl would probably result in rebellion. He then told her to arrange for her daughter to be put on birth control and until then, talk to her and give her a box of condoms.
Later that evening, as her daughter was preparing for a date, the woman told her about the situation and handed her a box of condoms.
The girl burst out laughing and reached over to hug her mother saying:
"Oh Mom! You don't have to worry about that! I'm dating Susan!"             

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Joseph Black

Died 6 Dec 1799 at age 71 (born 16 Apr 1728). Scottish chemist and physicist who experimented with "fixed air" (carbon dioxide), discovered bicarbonates and identified latent heat. He lectured in chemistry, anatomy at the University of Glasgow, while also a physician. From heated magnesia alba (magnesium carbonate), Black collected a gas, carbon dioxide, different from common air. He published Experiments Upon Magnesia Alba, Quicklime, and Some Other Alcaline Substances (1756). Carbon dioxide was also released by fermentation, respiration, and burning charcoal so he assumed it was in the atmosphere. He also observed that ice melts without change of temperature, due to heat that becomes "hidden" - latent heat - and determined "specific heat" for heated of materials.[DSB gives date of death 6 Dec 1799. EB gives 10 Nov 1799.]
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