i can appreciate you comment. But this is what i mean. This isnt sinking in. My lectures speak to me like this. Could you work through it with me. Cheers
hey guys, i'm in the middle for revising for a dynamics paper in January. I'm in the middle of a 1st year BSc Physics degree. Looking through some past papers, there are questions that i can do, and there are questions that i am unable to do. These are usually question where you have to derive...
hey guys, just wanted to know, in the graph of the OTTO cycle in the link
http://www.qrg.northwestern.edu/ther...Pv-diagram.gif [Broken]
are stage (2-3) and (1-4) adiabatic or not, if so why are they
the reason i ask is that i have a graph showing that these stages are adiabatic...
hey guys, just wanted to know, in the graph of the OTTO cycle in the link
http://www.qrg.northwestern.edu/thermo/design-library/otto/Otto-Pv-diagram.gif
are stage (2-3) and (1-4) adiabatic or not, if so why are they
the reason i ask is that i have a graph showing that these stages are...
question
a rectangular plot of land requires fencing on all 4 sides. two opposite sides will use heavy duty fencing at £6/metre, whilst the other tow sides will use standard fencing at £3/metre. if the farmer buying the fencing has £5000 to spend, what is the maximum area he can enclose...
1. ln (x2 / y2)
= log (A / B) = logA-logB
= logx2-logy2
= 2logx - 2logy
(is this correct)
2. can this expression be split into seperate log functions and numbers, is this question the answer
log(2x + 3y) = log(2x + 3y)
(is this correct)
given a distance s = 8.6m, time t = 2s, and a mass = 1.01kg, evaulate the expression to a physically appropriate accuracy?
m3 = 1.013 = 3.03kg
is this correct
are these dimensional analysis questions correct
A = area
V = volume
v = speed
p = density
1. VA / v = L3 L2 L-1 T-1 = L4T-1
2. V2/3 A = (LT-1)2/3 L2 = L2/3 T-2/3 x L2 = L10/3T-2/3
3. 3A3 + 2V2 = A3 = L6
V2 = (L/T)2 = L2T-2 = L4T-2
are these correct
a gas contains 2 kinds of atoms 4x105atoms of type A and 8x105 atoms of type B. it is known that the mass of type A atoms is 5x10-26kg and the mass of the gas is 2.8x10-20kg. what is the mass of type B atom?
answer;
2.8x10-20kg - 5x10-26kg = 2.8x10-20kg - 0.00005x10-20 = 2.799995x10-20kg...
questions
3.
A substance consists of equal numbers of tow kinds of atoms, with masses m1 and m2 respectively.
a) what is the mass of the substance is 2x106 atoms of each kind are present, where m1 = 3.4x10-26kg and m2 = 1.6x10-26kg?
answer;
3.4x10-26kg + 1.6x10-26kg = 5x10-26 x 2x106 =...
Differentiation problem and finding maximum, need helping :)?
have a few problems with these questions, can you help :)
Using differentiation, find the MAXIMUM value of the following functions?
1. f(x) = x2 / 4 + 4 / x
2. f(x) = xe-2x2
3. f(x) = sqrt(x - n) / x ; n>0
hope you guys...
Indefinate integration problem !!
find the following indefinate integrals?
a) ∫ x / 1 + x2
b) ∫ 1 / 1 - x2
c) ∫ 3x / (2x2 - 3)4
can you help me please !!!
Indefinate integration problems!!!
find the following indefinate integrals?
d) ∫ 6x2 / sqrt(2x3 + 9)
e) ∫ x sqrt(1 - x2
f) ∫ 4 / (x + 2)(x + 3)
can you help me answer these please
maximum values for differentiation :(
have a few problems with these questions, can you help :)
using differentiation, find the maximum value of the following functions?
1. f(x) = -x2 + x
2. f(x) = lnx - x
3. f(x) = -x2 + 2x2
4. f(x) = x2/4 + 4/x
5. f(x) = xe-2x2
6. f(x) = sqrt(x -...
hey guys, i do apologise, i had a go at them, and i was wondering if the answers i got were correct!
1.f(x) = -x^2 + x
d/dx(x^n) = nx^(n-1)
f '(x) = -2x + 1
2.f(x) = lnx - x
f '(x) = (1/x) - 1
3.f(x) = -x^4 + 2x^2
f '(x) = -4x^3 + 4x
4.f(x) = x^2 / 4 + 4 / x...
have a few problems with these questions, can you help :)
1. f(x) = -x2 + x
2. f(x) = lnx - x
3. f(x) = -x4 + 2x2
4. f(x) = x2/4 + 4/x
5. f(x) = xe-2x2
6. f(x) = sqrt(x - n)/x ; n>0
hope you guys can help !
in plan view, the shoreline of a bay may be approximated by a curve f(x) = -x2 + 2x between one headland at x = 0 and another at x = 1km, where (f) is also measured in km. at low tide, the edge of the sea just reaches each headland, following a straight line between them. calculate in km2 the...
if u wana find the frequency, which is the number of cycles per second, find out how many breaths u take in 1 sec and put it in2 the formula, it is basic conversion thats all, it is easier that you think, just stop thinking "complicated", think basic :) hope this helps :)