rainbow_rocks03
  • rainbow_rocks03
help?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
rainbow_rocks03
  • rainbow_rocks03
An astronaut who weighed 765 newtons on Earth found that his weight on Jupiter was 1800 newtons. While visiting Jupiter, he captured an alien that weighed 1200 newtons on Jupiter. What will be the alien's weight on Earth? A. 443 newtons B. 510 newtons C. 742 newtons D. 985 newtons
rainbow_rocks03
  • rainbow_rocks03
Plz explain the why the answer is that answer
anonymous
  • anonymous
First thing you have to is find the person's mass by dividing 765 N by earth's gravitational acceleration constant. Then use that mass and F=mg to find the gravitational constant on Jupiter. Then use that gravitational constant and F=mg to find the alien's mass.

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More answers

anonymous
  • anonymous
It's a big chain of plug and chug
rainbow_rocks03
  • rainbow_rocks03
So I divide 765 by 1800?
anonymous
  • anonymous
So obviously you're not familiar with the widely known gravitational constant of 9.81 m/s^2. We use this constant to calculate a lot of parameters in physics problems: weight, velocity, acceleration, etc.
anonymous
  • anonymous
So your first step is to divide 765 N by 9.81 m/s^2. According to Newton's Law, \(F=ma\). So dividing the force (in N) by the acceleration (m/s^2), will give you the mass (kg)
rainbow_rocks03
  • rainbow_rocks03
😐?
anonymous
  • anonymous
What class is this for?
rainbow_rocks03
  • rainbow_rocks03
This is math
rainbow_rocks03
  • rainbow_rocks03
why?
anonymous
  • anonymous
Just curious. It's a simple physics problem, but it seems too far out to be for a math class. It's a math problem, but physics oriented.. It seems that they left out a big part of how to solve the problem. Anyway, there's a constant called Earth's gravitational acceleration constant. It has an estimated value of 9.81 m/s^2. All objects are constantly under gravity's influence, and therefore always are under the influence of this acceleration due to gravity. A person's weight, is just that person's mass times this constant.
anonymous
  • anonymous
Weight can either be given in units of pounds (lb) or Newtons (N). Both are units of force.
rainbow_rocks03
  • rainbow_rocks03
I just need to know how to get my answer
anonymous
  • anonymous
I am going to do that
rainbow_rocks03
  • rainbow_rocks03
oh, lol
anonymous
  • anonymous
But I'm more irritated that it seems that they have not given you the blasted constant. Math courses should not teach nor involve physics and problems related.
anonymous
  • anonymous
Anyway, there's a law in physics that says that a force is equal to an objects mass multiplied by the acceleration of that object.
anonymous
  • anonymous
Numerically speaking,\[\huge \text{F}=ma\] but in our scenario, the acceleration is g, the gravitational acceleration constant. So here we can just say that\[\huge \text{F}=mg\]
rainbow_rocks03
  • rainbow_rocks03
they arent! they are just giving an example, can you plz solve the question instead of judging that like "oh they added physics" and "oh they didnt do this right"or "this is not correct and has physics involed"
rainbow_rocks03
  • rainbow_rocks03
lol
anonymous
  • anonymous
If you haven't noticed, rainbow_rocks03, I'm explaining it to you.
rainbow_rocks03
  • rainbow_rocks03
I know. :)
anonymous
  • anonymous
Then do not make petty remarks like that.
rainbow_rocks03
  • rainbow_rocks03
:o
anonymous
  • anonymous
Moving forward here: We have to manipulate and use the equation F=mg a bunch of times to find the weight, the gravitational constant on Jupiter. Each planet has a different influence by gravity and experiences different acceleration due to gravity. That is why on the moon, astronauts "float." The acceleration and force due to gravity is smaller than on Earth.

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