Home >
Science & Mathematics
Science & Mathematics

Is ugly and weak is a genetic defect?
Best answer: No. Beauty is in the eye of the beholder, and "weak" is relative. A trait that is a "weakness" in one environment can be an asset in another environment 
How is density related to pressure? If something is higher in pressure, does that mean it is lower in density?

On my DNA test, if there are differences between mine and my dad's does that mean the different ones I got but he didn't, came from my mom?
Best answer: Yes. DNA is inherited differently in families. Like my sister's shows a lot more German than mine does, and mine shows a lot more Irish than hers does. 
Can energy move from cold to hot?

Help with simple differential equations y dy= x dx.?
I am told to find a solution of the differential equations y dy= x dx. What I did is integrate left and right hand side respectively end up with y^2=x^2+2c when its all cleaned up. The solution book says I should get is x^2y^2=C and I can see how I can get y^2x^2=C but not x^2y^2=C like book has. 
9,860 students in a population of 62,400 people. What percent of the total population is students?

Watch a video on what will happen if the sun went out, it shows how eventually the worlds temperature would drop, slowly causing a ice age?
what is that s how all previous animals/dinosaurs died, then two stars collided creating the sun we have today reheating the planet and letting the world grow and come back to life suitable for humans 
Name the white fumes produced?

Can you get Matlab or an equivalent program for free?
Best answer: You can try to look for Older version of Maple software It will practically solve any engineering equation just like Matlab and graph it too. Although Matlab with a student card should be 50$. 
Where is the great forest place in the USA for a country boy.?

What is my grade?
My humanities teacher has my overall grade as 264 percent What is this on a normal 0100 percent grade scale? Just wanting to know what to expect at the end of the semester. 
How to do this math problem?
Best answer: Since you have a 454590 triangle, the sides opposite of the 45's will be equal. Since one is given as √8 the other one will also be √8
Now we can use Pythagorean Theorem to solve for the hypotenuse (since we are told that we have a righttriangle:
a² + b² = c²
(√8)² + (√8)² = c²
8 + 8 = c²
16 = c²
c = 4 units 
Can a black hole be made from light?

Is college trigonometry in high school hard?
Best answer: If you don't know how to work a problem to solution, more like impossible.
Very very hard.
Learn the simple algorithms to work a problem, it is really quite simple.
Trig is hard, (read complicated)even for me, but grade 12 algebra in 7th grade was a breeze once learning how to work a problem. Same with trig. 
What kind of insect or bug is this?
Found this on my ceiling. Thank you! 
Is 30.58 larger or smaller than 33.9?
Best answer: 30.58 is negative (less than 0) and 33.9 is positive (greater than 0).
Negative numbers are always smaller than positive numbers.
Update:
Regarding 30.58 and 33.9, think of negative numbers as being in a hole. Will you be lower if you are in a hole that is 30.58 meters deep, or in a hole that is 33.9 meters deep?
Or are you more in debt if you own someone $30.58 or if you owe someone $33.90?
Update 2:
For the same reasons, 18.93 is *larger* than 23.69. It is "less negative". Again if you would be closer to the surface in a hole that was 18.93 meters vs. 23.69 meters deep.
Answer:
33.9 is smaller than 30.58 because it is "more negative".
33.9 < 30.58
18.93 > 23.69 
Does resistance increase as voltage increases?
Best answer: By increasing V on a certain R you increase I and then joule losses P = R*I^2 or P = R*(V/R)^2 = V^2/R
All this leads to a higher temperature T and since resistivity ρ ≡ T , then the resistance will increase : how much ?
It depends upon the material : talking about copper ,the relevant equation is :
Rx = Ro(234+Tx)/(234+To)
if To = 20°C and Tx = 120°, then Rx = Ro*1.394 which means and increment close to 40% 
Why do some people think that all scientists are emotionless?

Bacteria doubles every 20 minutes. what is the value of k?
the exponential formula is y=ax^kt. does what k=?