Homework Statement
So, I'm doing a series problem, and after applying the root test I end up with the following limit:
Lim as n--> inf of (n! / n^2) = infinity according to the solution manual.
I can't seem to understand this because the way I look at it, each term in the numerator is...
Homework Statement
The problem is:
Find the oxidation number of each element in the compound: Pb(O)2
I said oxidation number of Pb = x, O = -1 since this is a peroxide, therefore oxidation number of Pb is plus 2. However, the solution manual says O is -2 and thus Pb is 2.
But elsewhere, for...
Homework Statement
To which of the following would the addition of an
equal volume of 0.60 M NaOH lead to a solution
having a lower pH? (a) water, (b) 0.30 M HCl,
(c) 0.70 M KOH, (d) 0.40 M NaNO3.
2.The attempt at a solution
the correct answer is 0.70 M KOH, and they say that by adding more OH...
Ok. So infinite solubility doesn't exist, but in the original case mentioned, we ignore the soluble substance because its just way more soluble, correct?
Homework Statement
Ok, so basically, our teacher gave us some solubility rules... then we did a problem where we mixed two solutions and checked to see if a precipitate would form.
So he calculated Qsp for one of the products and compared it to Ksp for that product, he did not calculate Qsp...
So basically, in the text below, they say that maximum angular magnification is achieved when the object is placed 25 cm from the eye, i.e. at the near point. The minimum angular magnification is achieved when the object is placed at the focal length.
However, for the chapter on the telescope...
Homework Statement
So basically, for a lab, I have to make a calculation abiding by the rules of sig figs, and it involves the subtraction of two numbers in scientific notation:
1.00 x10^-3 - 4.35 x10^-5
= 1.00 x10^-3 - 0.0435 x10^-3 ; therefore, we should round the final answer to two...
Homework Statement
Basically, let's say you have some general reaction and you have some initial concentrations. If K = 1, why does the reaction get to equilibrium slower compared to when K = 20, let's say?
Homework Statement
I have a question about the following text:
In the red section, if I understand correctly, they're saying that if on a string, there is a musical note being played, the frequency that the note is being played at is called the fundamental frequency. But, if it's at its...
Homework Statement
Basically, I was reading the following passage from a textbook, and I'm confused as to why they mention natural frequencies? Doesn't each harmonic have just one frequency that it oscillates at? From what I understand, the natural frequency is just the frequency an object...
That force mg changes. If it is being accelerated upward, from the frame of the pendulum, the acceleration is greater. If it is being accelerated downward, then that force would be less. The greater the acceleration, the less the period.
Ok. For some reason I was thinking this was a vertical spring-block system in an elevator!
@gneill , the equation for the period of a simple pendulum is T = 2pi (L/g). The gravitational force is constant throughout as well as the length of the spring, so I don't think that amplitude would be...