I think I get it now. since it's a triangular prism, you take the area of the triangle and multiply it by the base of the rectangle. I think that's correct now.
A trough is 10 ft long and its ends have the shape of isosceles triangles that are 3ft across at the top and have a height of 1ft. if the trough is filled with water at a rate of 12ft^3/min, how fast does teh water level rise when the water is 6inches deep?
so far i have: dv/dt= 12ft^3/min...
okay, that's much clearer, thnx.
now I'm a bit confused on how to graph logs.
log_5(y+2)=x+1
What I did, changed the whole equation into Exponential Form. I then graphed that and then switched the X and Y coordinates.
Is that the correct procedure? Do I only interchange the X and Y...
I can't seem to find where I am going wrong on this Question. it asks to solve:
log_3 (2x+3) - log_3(X+1) = 2 where _3 is the base of 3 for log
so far i moved the log_3(x+1) to the right side of equal sign. then i moved the 2 up as an exponent:
log_3(2x+3) =...
A 70kg adult sits at one end of a 10m board, on other end sits a 30kg child. where should pivot point be placed so board is balanced? board's mass is 15kg.
so far, i have pivot point is 15kg(9.8)=147N (5) <-- half the board length.. for adult i have 686N and kid is 294N. i know that...
Q: If K>0, for what values of k does the system x^2+ (y-5)^2=9 and y=x^2 +K have:
a) 4 solutions
b) no solution
i have no idea how to begin this problem. I know that centre of circle is 5,0 and radius is 3 and the second eqn is a parabola..but that's about it so far..
any ideas?
Q: an object is thrown from the ground into the air with a velocity of 20.0m/s at an angle of 27.0 degrees to the horizontal. what is the max height reached by this object?
i drew the triangle and found vertical side to be 9.08 m/s and horizontal side to be 17.8m/s using sin and cos...
When a piece of Ag is placed in 1.0M NiCl2, how are the concentrations of each affected?
from a legitimate source, it states that no change occurs. Why is that?
What happens to the pH of an anode and cathode of an electrochemical cell if the cathode is in an acidic solution?
as i see that the source's answers are not reliable, I will no longer post Q/A from that source... altho i appreciate the attempts to help me solve those defective problems.
consider: FeO (s) + H2 (g) <--> Fe(s) + H2O (g)
which describes the effect that a decrease in volume would have on the position of equilibrium and the [H2] in the above system?
answer: No shift, [H2] increases.
I was wondering why the [H2] increases even when there is no shift in the...
The source from which i acquired the question from had a typo. I checked another source with the same question and here is the correct answer: forward reaction decrease as [HBr] decreases. i understand the answer quite clearly now.
but have another query: for reaction kinetics, when...
there are 2 Questions in which they seem like they should have the same answer, but apparently they dont, which is confusing.
1. 2NH3 <--> N2(g) + 3H2(g) initially, NH3 is added to empty flask. how do rates of forward and reverse reactions change as system proceeds towards eqm?
answer...
would reactions happen faster in heterogenous rxns or in homogenous? also, i was wondering if i am correct in assuming that heterogenous & homogenous reactions affect: temp, concentration, nature of reactants and catalysts? only surface area affects heterogenous.
for this question, would u...
what does [HIn] and [In] stand for? what are the importance of them? are they the concentrations of H and OH? or pH and pOH?
another Q: the compound Ag2S has solubility of 1.3 * 10^-4M at 25 degrees celsius. what is the ksp? i tried using the ICE table, but the answer i got was wrong. the...