Recent content by Steven Hansel

I learned piano and then picked up guitar and bass. Had a lot of fun with music, it made my life more colorful and not just monotonous. worth it...

That really helped me more, because of the radius decreasing as we go to the core of the earth, the mass of earth/radius into the core also decreases. thanks a lot!

Wow, thanks! that really give me an insight, i was confused at the sphere part but now i understand. thanks again!

Msphere = 4/3π.r^3.p i think replace M with volume of a sphere and density of the sphere? into the equation of g = 4π.r^3.p/3.(r-h)^2 Correct me if I'm wrong thanks!

Done!

Homework Statement Why does gravity force decreases below Earth's surface? Homework Equations F = G (m1 m2)/r^2 F = force of gravity G = Universal gravity constant m1 and m2 = mass of the objects r = distance between two objects g = GM/r^2 g = gravity of the object G = universal gravity...

It actually will, Elon musk invest his own money to actually improve his rockets. Falcon 9 now consistently bring satellites to space and also bring cargo to ISS. It increases the company's income. He also said that he will make travel to the Mars possible by turning down the cost to $200,000 -...

I guess that's true. external factors like, safety, budgets, and etc affect this progress in technology. But the important thing is that we are progressing faster than before. If we have a lot people like Elon Musk, We would progress much faster. Public interest in Space Exploration is quite...

It's like moore law but applied in all of the technologies. I think we are growing exponentially, and i believe we will also grow even more faster in the future.

Let's say we already colonized some of the planets and moons in our solar system. Mars,Moon, Europa and etc. Planets like Mars and other has less gravity than earth, so the resource needed for space travel in our solar system will reduce by a lot if we launch spaceships there. Say, that we...

Okay, that really helped me to where i should find my answer, thanks for answering :)

Thanks for the answer, i still have one more question that i forgot to ask, why does gravitational force weakens as it get farther from a planet. I'm really confused. I also don't understand why when you get near fire it's hot and when you get away from it, you don't get any heat. thanks for...

The title said it, how do you know the size or maximum area of a planet's gravity field can cover. The reason i asked this question because from the gravity equation the r is the radius from Mplanet and Mobject. So, that doesn't explain how big is the gravity field. Is it when the gravity force...

Hi everyone, well i ask this question because my parents already asked me what to major in. Firstly, I'm planning to study overseas to europe probably to German (i'm from Indonesia) i still haven't learn the language yet but i will. Well, I'm not sure what to major. I hate biology and really...

Well, just asking. If i want to work in the USA do i need to change my citizenship to USA and vice versa. If so, is it worth it?