• Are tigers beautiful?

    Are tigers beautiful?

    26 answers · Zoology · 7 hours ago
  • What's your best explanation for a supposedly "intractable" evolutionary problem, R&S?

    A lot of creationists think that certain evolutionary problems are supposedly "intractable". That there's no possible way that they could have happened naturally. For any or all of the ones I list, or any others you've noticed, can you give me a short, layman-level explanation for how it could... show more
    A lot of creationists think that certain evolutionary problems are supposedly "intractable". That there's no possible way that they could have happened naturally. For any or all of the ones I list, or any others you've noticed, can you give me a short, layman-level explanation for how it could have happened without requiring a miracle? 1. Abiogenesis (which I know is technically a different question from evolution, but creationists complain about it a lot) 2. The evolution of flight (especially avian flight) 3. The evolution of multicellularity 4. Sexual reproduction (the usual creationist argument here is "you'd need a male and a female to evolve at the same time, in the same place", or something like that) 5. The evolution of any complex organ or structure with many parts (eg the eye, the bacterial flagellum)
    18 answers · Biology · 2 hours ago
  • The Universe, entangled particles and virtual wormholes?

    Can entangled particles in space be connected separated by space-like separation greater than that allowed by the speed of light, be connected by virtual wormholes ?
    Can entangled particles in space be connected separated by space-like separation greater than that allowed by the speed of light, be connected by virtual wormholes ?
    8 answers · Astronomy & Space · 14 hours ago
  • Just a math question I thought of?

    Best answer:   Three points on the curve y = sinx: A (a, sin a), B (b, sin b), C (c, sin c) where 0 ≤ a < b < c ≤ 2π Triangle ABC has base |AC| = √((a − c)² + (sin a − sin c)²) Line AC has slope = (sin a − sin c) / (a − c) Equation of line AC: y − sin a = (sin a − sin c) / (a − c) (x − a) (a − c) (y − sin a) = (sin a −... show more
    Best answer:  
    Three points on the curve y = sinx:
    A (a, sin a), B (b, sin b), C (c, sin c)
    where 0 ≤ a < b < c ≤ 2π

    Triangle ABC has base |AC| = √((a − c)² + (sin a − sin c)²)

    Line AC has slope = (sin a − sin c) / (a − c)
    Equation of line AC:
    y − sin a = (sin a − sin c) / (a − c) (x − a)
    (a − c) (y − sin a) = (sin a − sin c) (x − a)
    (sin a − sin c) (x − a) + (c − a) (y − sin a) = 0

    Triangle ABC has height = distance from B to line AC
    = |(sin a − sin c) (b − a) + (c − a) (sin b − sin a)| / √((sin a − sin c)² + (a − c)²)
    = |(b−c) sin a + (c−a) sin b + (a−b) sin c| / √((sin a − sin c)² + (a − c)²)

    Area (ABC)
    = 1/2 * √((a − c)² + (sin a − sin c)²) * |(b−c) sin a + (c−a) sin b + (a−b) sin c| / √((sin a − sin c)² + (a − c)²)
    = 1/2 * |(b−c) sin a + (c−a) sin b + (a−b) sin c|

    Using WolframAlpha, we find area is maximized when:

    a = 0
    b = 1.72545
    c = 5.32211
    Maximum area = 3.33656

    http://www.wolframalpha.com/input/?i=max...

    Here is a diagram showing the triangle with maximum area:
    https://www.desmos.com/calculator/di4j6s...
    You can move the points around on the curve.
    The area is shown on the second line.
    6 answers · Mathematics · 2 days ago
  • Are psychics fake?

    I got a reading done and the lady Wanting me to pay for cleansing afterwards?
    I got a reading done and the lady Wanting me to pay for cleansing afterwards?
    10 answers · Paranormal Phenomena · 1 day ago
  • There's one thing about evolution I still don't understand?

    if we evolved from apes, (meaning our common ansestor, the Australopithecines), why is it that modern apes can't talk? no I'm not taking about sign language, I mean real physical human speech. has any scientific studies ever been conducted on this? also, if we were at one time, an Australopithecine,... show more
    if we evolved from apes, (meaning our common ansestor, the Australopithecines), why is it that modern apes can't talk? no I'm not taking about sign language, I mean real physical human speech. has any scientific studies ever been conducted on this? also, if we were at one time, an Australopithecine, what is the evolutionary prices for how we developed human speech? can you please explain this to me?
    17 answers · Biology · 1 day ago
  • Please demonstrate how to solve this problem step by step using PEMDAS 3-5*(-1)/(1-3*(-1)) Thank you.?

    Best answer: 3-5*(-1)/(1-3*(-1))
    3 + 5/(1+3)
    3 + 5/4
    12/4 + 5/4
    17/4
    Best answer: 3-5*(-1)/(1-3*(-1))
    3 + 5/(1+3)
    3 + 5/4
    12/4 + 5/4
    17/4
    6 answers · Mathematics · 1 day ago
  • Weird animal in my area!! Can&#039;t tell what this is?

    Weird animal in my area!! Can't tell what this is?

    I was walking to my car this morning headed to college. This animal was behaving really weirdly and was running around me then ran up a tree. It scared the crap out of me. Can anyone SPECIFICALLY tell me what animal this is (genus perhaps?) Friends say it is a racoon but others say its ears and tails heavily differ... show more
    I was walking to my car this morning headed to college. This animal was behaving really weirdly and was running around me then ran up a tree. It scared the crap out of me. Can anyone SPECIFICALLY tell me what animal this is (genus perhaps?) Friends say it is a racoon but others say its ears and tails heavily differ Thanks....
    11 answers · Zoology · 2 days ago
  • Proof big bang is fake?

    Nothing can develop out of an explosion. We are the only planet that has a perfect temperature, gravity, atmosphere, air, water, trees, and diversity of many species. Look around you. So many different parts of the world that are completely unalike. Look at the human brain and it's complexities. How we can... show more
    Nothing can develop out of an explosion. We are the only planet that has a perfect temperature, gravity, atmosphere, air, water, trees, and diversity of many species. Look around you. So many different parts of the world that are completely unalike. Look at the human brain and it's complexities. How we can literally form a house put of the materials god gave us. Look at Mountains, water falls, valleys, oceans. Look how drastically different they are. God was so creative. This can't just "form" out of no where. Let alone the freaking EARTH! Explosions destroy, not create.
    24 answers · Astronomy & Space · 2 days ago
  • How is steven hawkings still alive?

    He was diagnosed at 26, people dont live over ten years let alone 50
    He was diagnosed at 26, people dont live over ten years let alone 50
    11 answers · Physics · 2 days ago
  • How do you simplify?

    Best answer: sec²(x)/(sec²(x)-1) = sec²(x)/tan²(x)
    = (1/cos²(x)) / (sin²(x)/cos²(x))
    = 1/sin²(x)
    = csc²(x)
    Best answer: sec²(x)/(sec²(x)-1) = sec²(x)/tan²(x)
    = (1/cos²(x)) / (sin²(x)/cos²(x))
    = 1/sin²(x)
    = csc²(x)
    10 answers · Mathematics · 2 days ago
  • How are black holes related to the big bang theory?

    was the big bang a black hole? how do black holes prove the big bang theory?
    was the big bang a black hole? how do black holes prove the big bang theory?
    13 answers · Astronomy & Space · 23 hours ago
  • I've got a crazy elderly relative that claims to see ghosts all the time and no amount of rational talk will dissuade her.?

    Useful suggestions on how to deal with his and/or sympathy welcome.
    Useful suggestions on how to deal with his and/or sympathy welcome.
    13 answers · Paranormal Phenomena · 2 days ago