• How old will you be in 10 years?

    37 answers · Mathematics · 9 hours ago
  • According to evolution where did the first cell come from? When will atheists tell me!!!?

    Best answer: Abiogenesis - which is an unproven hypothesis
    Best answer: Abiogenesis - which is an unproven hypothesis
    25 answers · Biology · 1 day ago
  • How much does evolution affect humans?

    How much does evolution affect humans?

    The race deniers have lost a lot of battles. When anthropologists discovered africans and non-africans have been separated for 70,000 years it was a pretty big blow. Before that they said skin color changed over the course of around 10,000 years. Only it was 70,000. That would've been bad in and of itself, but... show more
    The race deniers have lost a lot of battles. When anthropologists discovered africans and non-africans have been separated for 70,000 years it was a pretty big blow. Before that they said skin color changed over the course of around 10,000 years. Only it was 70,000. That would've been bad in and of itself, but it became worse around 2007 when geneticists were able to sequence the human genome. And the first thing they found were different homologous clusters of DNA among different races. Now ancestry tests can tell you your exact race down to .01 of a percent. This one really hurt, because before there was "no biological basis in race, because I don't know what categories are, or the difference between coding and non-coding sequences are" - said the race deniers. But once we can accept that yes, evolution works in humans. Divergent evolution happened between polar bears and grizzly bears 70,000 years ago, which is almost the exact same duration non-africans & Africans have been geographically apart, until like the past 500 years or so. Now we're learning other languages and becoming more globalized, but before then they were more or less entirely separated groups. & if sociology is any guide, then Africans are not the most intelligent. Perhaps it's because of them evolving in a tropic biome for so long, which makes athleticism a much more important trait for natural pressures. In temperate biomes, alleles and genes linked to intelligence become more concentrated in that pop.
    31 answers · Biology · 3 days ago
  • Can someone help me name this bug?

    Last night I saw the strangest bug. In all 26 years of my life, I have never seen anything like it. I saw it in my front yard at around 11pm. It started off as a white flicker, and it moved very strangely. I thought it might have been a firefly, but fireflies are more yellow balls of light that appear round in... show more
    Last night I saw the strangest bug. In all 26 years of my life, I have never seen anything like it. I saw it in my front yard at around 11pm. It started off as a white flicker, and it moved very strangely. I thought it might have been a firefly, but fireflies are more yellow balls of light that appear round in shape while this one moved in a more linear line and it was a pure white light that moved in different zigzag motions. I've been looking for this bug everywhere online but could not find it, but does anyone else know what it might have been?
    5 answers · Zoology · 13 hours ago
  • What is the most dangerous animal?

    15 answers · Zoology · 1 day ago
  • What should be added to equation to make it a perfect square 9x^4 + 2x^2 + 25? ....Please!?

    Best answer: The expression (not equation) is 9x^4 + 2x^2 + 25 or (3x² + 5)² - f(x)

    9x⁴ + 2x² + 25 = (3x² + 5)² - f(x)
    f(x) = 9x² + 30x² + 25 - 9x⁴ - 2x² - 25 = 28x²

    If you add 28x² to the given expression, the result is the perfect square (3x² + 5)²
    Best answer: The expression (not equation) is 9x^4 + 2x^2 + 25 or (3x² + 5)² - f(x)

    9x⁴ + 2x² + 25 = (3x² + 5)² - f(x)
    f(x) = 9x² + 30x² + 25 - 9x⁴ - 2x² - 25 = 28x²

    If you add 28x² to the given expression, the result is the perfect square (3x² + 5)²
    10 answers · Mathematics · 7 hours ago
  • Is Isot possible to grain the human eye to see in slow motion? For if I want to be better in basketball or football I want to see in slow?

    Be able to maneuver past opponents in tricky situations. Can the human eye be trained to see in slow mo
    Be able to maneuver past opponents in tricky situations. Can the human eye be trained to see in slow mo
    7 answers · Physics · 2 days ago
  • If the Earth is round, why don't airplanes have to compensate for the curvature of the Earth?
  • Why do many humans feel bad about killing other beings, but animals don't?

    Best answer: How do you know animals don't feel bad? If you ever meet the people who run animal farms, you will notice they are immune to the bad feeling of killing an animal. It is their job, if they don't do it they don't eat [because they can't sell the meat for money to buy their other things]. People have... show more
    Best answer: How do you know animals don't feel bad?
    If you ever meet the people who run animal farms, you will notice they are immune to the bad feeling of killing an animal. It is their job, if they don't do it they don't eat [because they can't sell the meat for money to buy their other things].
    People have gotten used to buying processed meat in markets, many forget that meat came from a living beings.
    A lion, like an animal farmer, must kill an animal to make a living thus eat.

    If you're killing every other day you will grow immune to it.
    Even cannibals, there are cannibalistic tribes out there, do you think those people feel like crap every time they kill and eat someone? NO they grow immune to that and it becomes routine.
    13 answers · Zoology · 23 hours ago
  • 250,000 divided by 10?

    12 answers · Mathematics · 13 hours ago
  • The Sun appears to be bigger in the winter and small in the summer ?

    This might sound crazy for many, I moved to the UK in 2014 since than I have been noticing differences in the size of the sun and the distance the sun stays from the earth. In the winter the sun appears to be bigger and closer to the earth, while in the summer the Sun seams to be smaller in size and further out... show more
    This might sound crazy for many, I moved to the UK in 2014 since than I have been noticing differences in the size of the sun and the distance the sun stays from the earth. In the winter the sun appears to be bigger and closer to the earth, while in the summer the Sun seams to be smaller in size and further out in the sky. Does anyone have a explanation for this?
    9 answers · Astronomy & Space · 6 hours ago
  • Suppose a ball is thrown straight up into the air, and the height of the ball above the ground is given by the function? PLeaseee?

    Best answer: h(t) = -16t^2 + v₀t + h₀ Where: h = the height of the object at any given point in time (in ft) t = time the object is in motion (in sec) h₀ = the initial height (in ft) v₀ = the initial velocity (in ft/sec) If v₀ < 0, the object was propelled downward v₀ = 0, the ball was dropped from rest with no... show more
    Best answer: h(t) = -16t^2 + v₀t + h₀

    Where:

    h = the height of the object at any given point in time (in ft)
    t = time the object is in motion (in sec)
    h₀ = the initial height (in ft)
    v₀ = the initial velocity (in ft/sec)
    If v₀ < 0, the object was propelled downward
    v₀ = 0, the ball was dropped from rest with no initial velocity
    v₀ > 0, the ball was propelled upward

    So in this case we have:

    h(t) = -16t^2 + 37t + 6

    v₀ = 37 ft/sec
    h₀ = 6 ft

    The first derivative of position, h(t) in this case is the velocity:

    v(t) = dh/dt = -32t + 37

    v(3.2) = -32 * 3.2 + 37 = - 65.4 ft/sec => the negative sign is the direction of velocity which is downward

    The above makes D) => the correct choice

    however he ball will hit the ground when the height is zero we can find the time that takes place:

    -16t^2 + 37t + 6 = 0
    using the quadratic formula the approximated times are:
    t ≈ - 0.15 , 2.5 sec => disregarding the negative time, thus the ball hits the ground at t = 2.5 sec, which means at t = 3.2 sec, the ball should be resting on the ground so there is either an error or we are missing some more information
    6 answers · Mathematics · 2 days ago