Saturday
February 13, 2016

Posts by Damon

Total # Posts: 25,219

maths
A -- 1 tank/ 12 h = .08333 tank/hr B -- 1 tank/ 15 h = .06666 tank/hr C -- 1 tank/ 20 h = .05000 tank/hr time t hours .08333 t + .06666(t/2) +.05000(t/2) = 1 tank .14167 t = 1 t = 7.06 hours
January 10, 2016

Physics
How long to do 2 pi radians ? (a full circle) 1.06*10^-7 t = 2 pi t = 5.93 * 10^7 seconds how many seconds/day 1 day = 24*3600 s = 86400 s = 8.64*10^4 s 5.93 *10^7 / 8.64*10^4 = 6.86 * 10^2 days = 686 days
January 10, 2016

dips international Jalandhar
(360 km / 6 hours) * 9 hours = 540 km
January 10, 2016

MATHS
the slope of your line is 1/4 so the slope of any line parallel to it is 1/4 the slope of a line perpendicular to it is -1/(1/4) = -4
January 10, 2016

Physics
energy before hit = m g h = .2 * 10 * 20 = 40 J energy after hit = 10 J m g h = 10 2 h = 10 h = 5 meters
January 10, 2016

maths
Do you know how to copy a triangle congruent to the one in front of you? If you do that, you have your angle :) http://www.wikihow.com/Construct-Copy-of-a-Triangle
January 10, 2016

mathematics
sin Theta = 1/2 Theta = 30 degrees ( Very unsafe )
January 10, 2016

physicss
I can not be more mathematical than to say if you double the distance you divide the force by 4 2^2 = 4
January 10, 2016

physicss
force inversely proportional to distance squared (1/4)5 You can only do the second part if you know that the charges are equal. then as you pointed out Q^2 = 5/k
January 10, 2016

math
maybe sin (theta/2 ) = r/h
January 10, 2016

Math!!!
.78 http://stattrek.com/online-calculator/normal.aspx
January 9, 2016

science
Nah, how about oxidation of a hydrocarbon, particularly combustion? http://www.intel.com/content/dam/www/program/education/us/en/documents/project-design/react/react-presentation.pdf
January 9, 2016

Math
41.25/75 = 0.55 = decimal fraction of original price 0.55 * 100 = 55 % = percent of original price 100 - 55 = 45% = percent discount off original price
January 9, 2016

Math
You are welcome.
January 9, 2016

Math
1-0.40 = 0.60 0.60 * 475 = $285
January 9, 2016

Maths
c = a + n k 820 = a + 80 k 1040 = a + 124 k -----------------subtract -220 = -44 k so k = 5 820 = a + 80*5 = a + 400 a = 420 so c = 420 + 5 n if n = 180 then c = 420 + 80(180) c = 420 + 14,400 c = 14,820
January 9, 2016

Geography
If they drop their languages and customs and take up yours, they are more likely to be assimilated.
January 9, 2016

Geography
That is what your paragraph says.
January 9, 2016

Maths
11/x - 6/x = 3-3 5 = 0 x x = 5/0 which is undefined
January 9, 2016

Algebra
You are welcome.
January 9, 2016

Algebra
yes, y is 8 but it asked for z z = y-3 = 5
January 9, 2016

Algebra
3 cent = x 12 = y 15 = z x = 3 y z +3 = y 3 x + 12 y + 15 z = 243 3 (3y) + 12 y + 15 (y-3) = 243 get it ?
January 9, 2016

Social Studies
So what was number 1?
January 9, 2016

Social Studies
I guess so: http://www.pinterest.com/pin/520095456946189750/
January 9, 2016

Social Studies
Inuit dried tea leaves????
January 9, 2016

Social Studies
3.which groups make up Canada aboriginal population (select three) a.Quebecois**** NO WAY !!!!
January 9, 2016

Geography
what does this have to do with religious fundamentalism for example?
January 9, 2016

Geography
Sounds like a hierarchy to me.
January 9, 2016

Who knows?
We do not see your drawing.
January 9, 2016

History. Please Help!
You 2 b answer amuses me though because I am from Massachusetts.
January 9, 2016

History. Please Help!
I do not think so.
January 9, 2016

History. Please Help!
http://www.georgiaencyclopedia.org/articles/history-archaeology/mary-musgrove-ca-1700-ca-1763
January 9, 2016

History. Please Help!
1. No No No !!!!! wrong end of the continent
January 9, 2016

Geography
Yes.
January 9, 2016

Physics- just verfiying an equation
m r omega^2 is exactly the same as m v^2/r but the second may be an easier way to understand it. remember v = omega * r where v is tangential velocity (along the circumference if a circle)
January 9, 2016

Math
15 (77.28/4)
January 9, 2016

Math
4.5 hours 180 miles speed = 180/4.5 miles/hour
January 9, 2016

English
Please use one name and look up the Bill of Rights.
January 9, 2016

English
Go ahead. I will stick to quoting the Fourth.
January 9, 2016

English
The Fourth Amendment to the Constitution of the United States. Google Fourth Amendment
January 9, 2016

English
4. The right of the people to be secure in their persons, houses, papers, and effects against unreasonable searches and seizures shall not be violated and no warrant.....
January 9, 2016

math10
.9*.9 = .81 19%
January 9, 2016

history
They kept everyone out but a few Dutch traders. They particularly evicted the Catholic missionaries. It was the United States that finally opened the country up, and they did not have imperialistic motives. They adopted modern weaponry from the West as soon as they saw it. ...
January 9, 2016

math10
can you do better than 3+2 </= 6 ?
January 9, 2016

math10
LOL a^2 - b^2 = (a+b)(a-b) so 23 - 408 = (sqrt(23) -sqrt....
January 9, 2016

math10
x = 2^100 log x = 100 log 2 y = 3^60 log y = 60 log 3 z = 10^30 log z = 30 log 10 which log is lightest?
January 9, 2016

math10
well if x = 0 that is 3
January 9, 2016

math10
that is always + because even power is + so if we find a plus x, its negative mate will also work x^6 + x = 7 x(x^5 + 1)= 7 if 0<x<1 no way if x = 2, way too big so between 1 and 2 1.2 ---> 4.18 1.3 ---> 6.12 So there is one between 1 and 2 that works, and its ...
January 9, 2016

physics dimension
I showed you what to do yesterday. Try it yourself and I will try to remember to come back and review.
January 9, 2016

Science
I guess they never heard of a sonogram :)
January 9, 2016

science
It is impossible to answer. The way sonar works is that you determine how far away a reflecting object is by the time the pulse takes to get there and back. Without giving the time between ping and return, the question is meaningless.
January 9, 2016

Math
Now you should be able to do this one with the methods I showed you. In fact, just solve it.
January 8, 2016

Math
34 is not 32 but the slopes are the same so they are parallel, never cross NO solution
January 8, 2016

Math
y = -(5/6) x + 4 and y = -(2.5/3) x +6 -(5/6) is equal to -(2.5/3) so these two lines are the same line. There is a solution for every x, an infinite number.
January 8, 2016

physics dimention
y has no units r is length h is length g is length/time^2 so we have length^3/time^2 but for force we need m a or mass *length/time^2 we have g in there. I suspect we need mass :)
January 8, 2016

physics dimensions
A length B length/time or velocity C length/time^2 or acceleration
January 8, 2016

Math
Whew, we agree :)
January 8, 2016

Math
slope = (4-3)/(8-6) = 1/2 1/2 = (-2-4)/(n-8) n-8 = -12 n = - 4
January 8, 2016

Math
8 am at 0 8:18 at 4.5 8:48 at 7.5 miles ??? 18 min = .3 hour 48 min = .8 hour in first .3 hours speed = 4.5/.3 = 15 mph in next .5 hours = speed = 3/.5 = 6 mph average speed for the whole trip = 7.5 miles/.8 hours = 9.375 mph
January 8, 2016

Math
initial value = Vi after one year v = .8 Vi after two years v = .8 Vi *.88 after three years v = .8 Vi *.88 * .88 = .61952 Vi 1 -.61952 = .38048 so 38.048 percent
January 8, 2016

Math
2.04 * 10^7 = x * 1.025 x = 1.990243902*10^7 = 19,902,439
January 8, 2016

Math
3 1/5 / x = 4 1/2 ???? 16/5 / x = 9 / 2 or 9 x / 2 = 16/5 9 x = 32 / 5 x = 32 /45 --------------------- check 3.2/(32/45) = 4.5 ???? 32/45 = 3.2/4.5 heavens to Betsy, it is true :)
January 8, 2016

mechanics
You can get all of this from the first problem I did for you. I am beginning to get irritated.
January 8, 2016

Math
You are welcome :) That was fun !
January 8, 2016

Math
NOW if m = -1/m' Then it the lines are PERPENDICULR and they ARE -1/3 and 3 so it is not only a parallelogram but a RECTANGLE
January 8, 2016

Math
Get it now? Opposite sides have the same slope. GRAPH it carefully. I saw it on my quick sketch before I calculated slopes
January 8, 2016

Math
HE = (5+1)/(-3+5) = 3 GF = ((2+4)/(6-4) = 3 LOL, sketch wins, they are parallel NOW top and bottom FE = (5-2)/(-3-6) = 3/-9 = -1/3 GH = (-1+4)/(-5 -4) =3/-9 =-1/3 caramba! paralleogram
January 8, 2016

Math
sketch graph. Looks like a parallelogram but hang on. Might even be a rectangle:)
January 8, 2016

now now, I already did it
Hey, hang on and scroll down
January 8, 2016

physics
LOL, I just did most of this in your problem below.
January 8, 2016

physics
I assume that you are doing this a significant r>>Re so that you can not assume a constant g. It is easiest to do this with potential energy ---> kinetic energy define potential energy zero at infinity that way it is always negative, the more negative the faster. That...
January 8, 2016

Calculus @ Henry
dV = surface area * dh so dh/dt = dV/dt/surface area = Q/area
January 8, 2016

Algebra
http://www.jiskha.com/display.cgi?id=1452283876#1452283876.1452284419
January 8, 2016

Algebra
did I not do this right below here?
January 8, 2016

Algebra help pls fast
I assume you mean 8 by 8 on the bottom and 22 high. slant height from the center of a side of the base to top sqrt (4^2 + 22^2) = sqrt(500) = 10 sqrt 5 for altitude of one triangular side then A = 4 [(1/2) b h] = 2 (8)(10sqrt5) = 160 sqrt 5
January 8, 2016

Math
Well done John.
January 8, 2016

I disagree with you.
.7 * 500 = 350 2400/64 = 37.5 % 260/6.5 = 40% .2*140 = 28
January 8, 2016

Pre-Algebra Help pls fast
http://www.jiskha.com/display.cgi?id=1452283876#1452283876.1452284419
January 8, 2016

health and pe
yes detox
January 8, 2016

Physics typo
typo 147.05 J for #4
January 8, 2016

Physics
Take potential = 0 at ground level as instructed. 1. m g h = 4 * 9.81 * 1.25 =49.05 J 2. (1/2) m v^2 = .5*4*49 = 98 J 3. No friction so PE + Ke = constant = 49.05 + 98 = 147.05 J by the way that means when it stops at the top it should have potential energy of 147 J 147 = m g ...
January 8, 2016

Algebra
10- 3 = 7 8 - 3 = 5 6 - 3 = 3
January 8, 2016

physics
centripetal acceleration = v^2/r = 9/7.5 = 1.2 m/s^2 weight down = 9.81 m tension up = 495 so 495 - 9.81 m = m (1.2) 495 = m (11.01) m = 45 kg
January 8, 2016

Not finished yet Mel?
Hey, where are you ?
January 8, 2016

What do you plan to do while I do your calculus?
At least show some effort before asking some poor old retired guy to do it all.
January 8, 2016

Calculus
hint dh/dt * surface area = 4 cm^3/min
January 8, 2016

Calculus
find ds/dt when it reverses ds/st = 0 find the acceleration d^2s/dt^2 then
January 8, 2016

Calculus
L = 30 - 2 h w = 16 - 2 h V = L * w * h V = (30-2h)(16-2h)h take dv / dh and set it to zero use only resulting h values that do not give you negative w when you subtract 2 h from 16
January 8, 2016

Calculus
if y = 3x^(1/3) + 6x^(4/3) then dy/dx = x^-(2/3)+ 8 x^(1/3) and d^2y/dx^2 =-(2/3)x^-(5/3)+(8/3)x^-(2/3) extrema or inflection where dy/dx = 0 note slope undefined when x = 0 dy/dx = x^-(2/3)+ 8 x^(1/3) = 0 or 1/x^(2/3) = - 8 x^(1/3) 1 = -8 x x = -1/8 so what is d^2/dy^2 when x...
January 8, 2016

History
Well, best read up on it but I might be inclined to pick the first.
January 8, 2016

History
I am sure it is not C. Although John Smith did sail around here and actually named parts of Cape Ann in Massachusetts, he is known mainly for hanging out down around Virginia. Neither of those people was particularly easy to get along with.
January 8, 2016

p.e
I am going to contest my heredity and see if it helps.
January 8, 2016

Aluminum powder Separation
Is any of that stuff magnetic? Does any of it dissolve in anything handy?
January 8, 2016

science
Well, yes, but I would be more like does not absorb as much as dark colors do.
January 8, 2016

History
D is correct.
January 8, 2016

maths
volume of anything pointy with straight sides = (1/3) height * area of base so V = (1/3)(8)(4) pi for sphere V = (4/3) pi r^3 so (4/3) pi r^3 = (1/3)(32 pi) r^3 = 8 r = 2 diameter = 2 r = 4 cm
January 8, 2016

Math
http://www.mortgagecalculator.org/
January 8, 2016

History Help pls
I would be inclined to go with A
January 8, 2016

History Help pls
check out http://www.sciway.net/afam/slavery/houses.html
January 8, 2016

History Help pls
well, google slave plantations maybe
January 8, 2016

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