Monday
June 27, 2016

Posts by Damon

Total # Posts: 26,393

disagree
I would subtract first to eliminate y 65 y is in both
January 11, 2016

physics
P V/T = n R n and R are the same for both P1 V1/T1 = P2 V2/T2 P1 V1 T2 = P2 V2 T1 T2 = T1 (P2/P1)(V2/V1) luckily using degrees Kelvin so T2 = 300 (3.5/2)(12/15)
January 11, 2016

physics
first figure out what higher frequency the wall hears that frequency emmitted from the wall toward the car at that frequency then get the still higher frequency back at the car
January 11, 2016

Physics
east momentum positive initial 4.5 * 5 - 1.5 * 3 = 18 final 4.5 V1f + 1.5 V2f = 18 now energy (elastic means same before and after) (never happen:) initial (1/2)4.5(25) + (1/2)1.5(9) = 63 Joules after (1/2)4.5(V1f)^2 + (1/2)1.5(V2f^2) = 63 there you have 2 equations and two ...
January 11, 2016

tilt
I mean when(2t-2) when v = 10 10 = t^2 -2t + 2 t^2 - 2 t - 8 = 0 (t+2)(t-4) = 0 use + t so t = 4 a = 2 t - 2 = 6
January 11, 2016

Physics - probably typo
a = dv/dt = 2 t - 2 if you really mean when v = 2 we have to go back and find the times when v = 2 2 = t^2 - 2 t + 2 t^2 - 2 t = 0 t(t-2) = 0 t = 0 or t = 2 so a = 2 t - 2 = -2 or = 2
January 11, 2016

Math
4 = x^2 + 3 x ??? x^2 + 3 x - 4 = 0 (x+4)(x-1) = 0 x = 1 , -4
January 11, 2016

us history
Nope, think what we do around Boston. We are merchant shippers.
January 11, 2016

us history
I guess I will have to go with Hamilton et al then.
January 11, 2016

us history
whoops !
January 11, 2016

Hip Hip HOORAY !!!!!
Yes !! Somebody got one !!!!
January 11, 2016

MATHS
you kidding? x^6 - x^2 + x + c
January 11, 2016

us history
remember that "well ordered militia being necessary ...." phrase in there ?
January 11, 2016

physics
V = i R
January 11, 2016

Math log equation
5^a + 20*5^b = 0 a log 5 + log 20 + b log 5
January 11, 2016

us history
I vote for that, being from Massachusetts :)
January 11, 2016

algebra
6 k /(3 h) = 2 k/h
January 11, 2016

Math
log 10 [10^(3x-8) ] = 3x-8 log 10 [ 2^(5-x)] = (5-x)log 10[2] so 3x - 8 = (5-x)(0.301)
January 11, 2016

Math
I have a sneaking suspicion you might mean 10^(3x-8) = 2^(5-x) ???????????????
January 11, 2016

Math
70 is indeed smaller than 250. I vote for Ms. Sue
January 11, 2016

Physics
well, I guess if it zipped through empty space it is an electromagnetic wave with a speed of about c = 3 * 10^8 m/s I guess it is two dimensional space since no one is mentioning speed along the z axis so Vx = .43 m/s Vx^2 + Vy^2 = 9 * 10^16 Vy ^2 = 9 * 10^16 - 18*10^-2 LOL I ...
January 11, 2016

Physics
Note I assume x axis at 0 Bob used compass from N
January 11, 2016

Physics
Vector = magnitude (cos T i + sin T j ) i is x direction j is y direction Thus R x component = 145 cos 190 + 75 cos 288 + 210 cos 85 + 105 cos 355 R y component = 145 sin 190 + 75 sin 288 etc in the end |R| = sqrt (Rx^2 + Ry^2) angle = tan^-1 (Ry/Rx)
January 11, 2016

Math
The point is that we can help if you get stuck, but will not do your work for you.
January 11, 2016

Bob
http://www.jiskha.com/display.cgi?id=1452542999
January 11, 2016

Math
(2/3) / (1/2) multiply top and bottom by 6 (12/3) / (6/2) = 4 / 3
January 11, 2016

why is everyoe expecting me to do all their work today
I can not see your drawings. I am here to help if you get stuck. I took this in 1952 and do not need practice. Let's see where you get stuck, then ask.
January 11, 2016

Math
10/6 = 1 2/3 2/3 of 12 is 8 so 1 foot and 8 inches
January 11, 2016

Math
You are welcome.
January 11, 2016

Math
.6 x = 36 x = 36 / 0.6
January 11, 2016

No you have to pay for that second one.
sorry
January 11, 2016

maybe try this
http://www.imcpl.org/cgi-bin/fullbib.pl?bibno=1401051
January 11, 2016

ELA
Well, you can read free for two weeks here: http://www.scribd.com/book/249307735/Johnny-Tremain
January 11, 2016

Math
9 --> 0 is down 9 and then down more 0 ---> -6 = down 6 total down = 15
January 11, 2016

HEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEELPP
16 - Do you seriously not know what an isotope is ? 15 also ridiculous
January 11, 2016

humm, some very easy ones
I bet you know the answer to question 23 perhaps even 21 and 20 Please answer those then try the rest. I am not taking this course. I am only here to help you if you get stuck, not to do all the problems.
January 11, 2016

Algebra
yes
January 11, 2016

Algebra
y = m x + b m is the slope. b is the y axis intercept.
January 11, 2016

Math
function 1 is y = 3 and slope = 0 function 2 has slope = 3 3/0 is UNDEFINED
January 11, 2016

Please scroll down
Please stop asking the same questions over and over.
January 11, 2016

Math
I did this one, scroll down.
January 11, 2016

math help..STEVE
a 4 x 5 grid with 6 blocks shaded (1 point) 6 over 25, 30% 3/50, 6% 6 over 25, 24% 3/10, 30% ********* 6/20 = 3/10 = 30% --------------------- 11 B yes 10, not c 9 typos 8 D right 7 not B 6 not A 5 not D 4 not A 3 not C
January 11, 2016

Math
x = 65 - 2 y 2 (65 - 2 y) + 3 y = 105 solve that for y
January 11, 2016

Math
-3 x + 6 y = 18 - x + 6 y = 18 -------------------subtract -2 x = 0 x = 0 y = 3 So I get x = 0
January 11, 2016

Math
Well, usually increasing means going up to the right. (positive slope) Decreasing means going up to the left (negative slope) The question is poorly worded since the English words "goes up" really do not tell you the mathematical direction :)
January 11, 2016

Math
x + y = 90 x = 2 y - 30 (use that for x) ------------------------------ (2 y - 30) + y = 90 3 y = 120 y = 40 so x = 50
January 11, 2016

Ms.Sue, Reed
I do not see your answers. Try *******
January 11, 2016

Chemistry-Dr.Bob
Huh - who says? diesel is usually ignited (except when starting cold) by the increase in pressure and temperature resulting from compression in the cylinder. Gasoline generally requires a spark plug. (unless the cylinder or deposits in the cylinder get so hot they ignite ...
January 11, 2016

PHYSICS
ah - cute demo : http://www.youtube.com/watch?v=az1_4WjadlU
January 11, 2016

PHYSICS
Well, I suppose, but only in the sense that it is hard to change the direction of the axis of rotation. A bicycle is also stabilized by the rotation of the tires. The faster the spin, the more torque is needed to turn or tip the wheels. (torque = rate of change of angular ...
January 11, 2016

math
Do you mean the distributive property of multiplication? http://www.mathsisfun.com/definitions/distributive-law.html
January 11, 2016

HISTORY HELP ME FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
For the Mayan one you only need the title
January 11, 2016

HISTORY HELP ME FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
http://www.tulane.edu/~woodward/olemiss.htm
January 11, 2016

HISTORY HELP ME FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
http://www.motherjones.com/rights-stuff/2011/01/no-haiti-no-louisiana-purchase
January 11, 2016

HISTORY HELP ME FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
http://www.gilderlehrman.org/history-by-era/imperial-rivalries/timeline-terms/encomienda-system-established
January 11, 2016

HISTORY HELP ME FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
http://mayantimeline.blogspot.com/p/science-and-technology.html
January 11, 2016

HISTORY HELP ME FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Miranda, I would be happy to help if you demonstrated any sign of having read about this at all. Please Google the subjects if you do not have a text book. It would do more harm than good for me to just tell you my answers. This is not even my subject.
January 11, 2016

HISTORY HELP ME FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Hey, you try first, then we help if needed. I do not needed for most of them. The Maya one is pretty funny !
January 11, 2016

algebra
fn = a + d(n-1) f(7) = a + 6 d = 72 f(10) = a + 9 d = 90 so 3 d = 90 - 72 = 18 d = 6 a + 6*6 = 72 a = 36 so our sequence is f(n) = 36 + 6(n-1) f(2) = 36 + 6(1) f(2) = 42
January 11, 2016

incomplete
into what size sections?
January 11, 2016

Math
well, I suppose the length of the rectangle (L = d = diameter is twice the width (r = radius) so 2 r + 4 r = 30 6 r = 30 r = 5 cm 2 pi r/2 = 5 pi of course the base of the semicircle is another 2r or 10 cm so if that counts we have 5 pi + 10 for the entire perimeter of the ...
January 11, 2016

Physics
F = m a .6 = m (.4) m = 1.5 kg .9 of that is the trolley so add: 1.5 - 0.9 = 0.6 kg
January 11, 2016

Algebra 2
(5-0) / (1+8) = (y-5)/(x-1) plug and chug
January 11, 2016

Physics
v = Vi + a t 0 = 20 + 5 a a = - 4 m/s^2
January 11, 2016

basic technology
100 kg * 9.81 m/s^2 * 6 m = 5886 Joules
January 11, 2016

math - for example
http://www.quora.com/Is-0-divisible-by-0
January 11, 2016

No kiran, be careful
0/0 is not zero. It is undefined.
January 11, 2016

math
division of anything by zero is undefined.
January 11, 2016

geography
6/24 = 1/4 1/4 of the way around the earth, westward of Greenwich England 360/4 = 90 degrees West Well, I am at 70 on Cape Ann, so about 1200 miles west of me. Mark Twain country.
January 11, 2016

us history
Yes.
January 10, 2016

us history
Yes
January 10, 2016

us history
Are you only allowed to pick one? http://www.landofthebrave.info/middle-colonies.htm No gold,few slaves but area was known as a breadbasket and indeed shipbuilding was major.
January 10, 2016

Math
Hey, what do you think ?
January 10, 2016

Math
Hey, do it the easy way, find the x axis intercept where y = 0 and the y axis intercept where x = 0 for each line. by the way #9 is a typo. Perhaps x = y ?
January 10, 2016

us history
I believe that you are correct.
January 10, 2016

english
A - dead B - dead c - transported D - likely dead
January 10, 2016

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

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