Social Studies, 25.07.2019 19:30, lexipooh7894

Would a basketball explode when filled with helium

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The helium is lighter than air so the ball will have slightly more uplift for its weight so it would feel like it was in less gravity - so it would bounce higher (if you throw it at the ground at the same speed rather than drop it from a height). This would be a small effect probably changing the weight of the ball by about 22g.

The other effect is that helium is a better approximation to an ideal gas (lots of point particles bouncing around) than air. Air tends to loose more energy to making the particles spin and vibrate etc than helium does so it looses energy when you compress it and expand it. This means it is less elastic so the ball will have more energy after the bounce than it would do with air. - this is why expensive tyres are often filled with a noble gas like neon or krypton to reduce fuel consumption.

answered: Guest

as university of miami psychologists debra lieberman and adam smith pointed out in a recent article in the journal current directions in psychological science, humans have social and psychological mechanisms to deter incest. with very few exceptions, marriages between brothers and sisters and between parents and their children are verboten in every human culture. the primary psychological anti-incest mechanism is the yuck response. even the idea of sex with their mom or dad, bro or sis is upsetting to most people. the psychologist jonathan haidt has found that nearly everyone is repelled by the prospect of brother-sister sex, even in hypothetical situations in which there is no chance of pregnancy).

the biological cost of incest

this raises an interesting question: just what’s so bad about incest? sure, having sex with your dad or your sister seems gross — but why? some anthropologists have argued that incest taboos are learned social conventions. this explanation, however, doesn’t make sense to me as it does not explain the widespread existence of anti-incest mechanisms in creatures ranging from cockroaches to chimpanzees. second, the incest taboo is about as close to a universal law as human moral rules get.

why should mechanisms to avoid incest be so widespread both in nature and across human societies? the answer is simple. the problem with having sex close with relatives is that there is an astonishingly high chance that your offspring will be born with a serious birth defect.

answered: Guest

Carbon monoxide is usually more dangerous indoors.

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