This doesn't seem like it should be too hard, but I'm stuck... Am i making a stupid mistake somewhere?
1. The density of potassium metal is 0.89 g/cm3. Potassium's atomic radius is 231 pm. Assuming that r nuc = 10^-4 x r atom, estimate the density of an essentially spherical 39K nucleus...
Homework Statement
Use Definition 2.4.1 to prove that the stated limit is correct.
Definition 2.4.1 in my book is:
lim as x->a of f(x) = L
if given any number e(epsilon)>0 we can find a number d(delta)>0 such that
|f(x)-L|<e if 0<|x-a|<d
Homework Equations
Question 31. lim as...
Hi
This is a problem on a practice test.
Function h(t)=ln(1+t) + (3/4)*cos(t/2)
What are the intervals in which h(t) is greater than 3?
So far, the only way I've been able to figure it out is using the "intersect" functionality of my graphing calculator.
Is there a way to...
Did I answer these questions correctly?
5. In the reaction N2 + 3H2 -> 2NH3, if 20.0g of hydrogen reacts:
...a. How many grams of ammonia are produced?
...20.0g H2...|1 mol H2..|2 mol NH3.|...17.04g NH3
......|2.02g H2.| 3 mol H2..|...1 mol NH3
112.5 grams of ammonia are produced...
It's a pretty long process to find all of those.
First, you have to factor the numerator and denominator.
To find zeros aka x-intercepts: they are the zeros of the numerator.
Ex. Numerator: (x+3)(x-2) zeros are -3 and 2.
Find the y intercept by plugging in the value of the...
Here are a couple examples.
|8+x| equals {8+x if 8+x>=0, -(8+x) if 8+x<0}
|x²-5| equals {x²-5 if x²-5>=0, -(x²-5) if x²-5<0}
Like Hurkyl said above, plugging in numbers will help your understanding.
I've been reading "The Universe in a Nutshell" and there is one thing I don't understand very well. What is the relationship between spacetime, acceleration, and gravity?
Please explain to a level of my understanding: I'm in 9th grade.
More specifically, what I don't get is why the...