herp_derp
This page lists questions and answers that were posted by visitors named herp_derp.
Questions
The following questions were asked by visitors named herp_derp.
Do alloys have the same properties as their individual elements?
12 years ago
Please help me with this problem. Simplify. √(-24 - 10i)
11 years ago
Answers
The following answers were posted by visitors named herp_derp.
Well...we know Sodium (Na) is a silver metal while Chlorine (Cl) is a poisonous gas. However, they chemically combine to make yummy table salt (NaCl)!!!
12 years ago
These are perfect grammatically correct sentences, dude. :D
12 years ago
1. let "x" be the amount they invested 2. let both their total investments equal 420 (Ex. Barney: 0.04x Fred: 0.02x) 3. Write equation: 0.04x + 0.02x = 420 4. Solve!!! :D
12 years ago
ok,ok,ok....lad listen up lets see how ya did here... THESE ARE THE CORRECT ANSWERS... 1a) 85 km/hr = 23.61 m/s (HINT: from km/hr to m/s just divide by 3.6) 1b) d = vt = (23.61)(8) = 188.88 m 1c) t = d/v = (2000)/(23.61) = 84.7 s 1d) v = d/t = (140)/(1.83...
12 years ago
well...not sure if my answer is right but... so the original ratio is 5:7:8 the increase is 40%,50%, and 75% respectively... so... 5 x 0.4 = 2 7 x 0.5 = 3.5 8 x 0.75 = 6 Therefore the new ratio is: 4:7:12 (remember you cant hav decimals) and always rememb...
12 years ago
well, the equation for kinetic energy is this: KE = (1/2)mv^2 therefore... KE = (1/2)(2 kg)(0.5 m/s)^2 KE = 0.25 J ---- And always remember....HERP THE DERP!!!
12 years ago
Well...if you said air resistance is not negligible, then it has to be one of those forces... Anyway...heres my list: - air resistance - gravity (These are only when its in air, if its not you could say the tennis racket when it got hit or the ground/cour...
12 years ago
ah...i remember these days of vectors... anyway, i THINK (not so sure thou) that this is the answer... well, if 30 N is pointed downward and 40 N is pointed sideways, i think you would need to use the Pythagorean theorem. so... Let Vr = (Resultant vector)...
12 years ago
Under our United States government, yes, you are able to wear that shirt. You have the constitutional right of freedom of speech and freedom of religion protected by the First Amendment. Any opposition to that is a DIRECT VIOLATION of the Constitution. So...
12 years ago
Forgive me Ms. Sue, but I really need some clarification. I was looking at the same site you showed me and I click on an article named "First Amendment protects more than just words" ...it basically says that symbolic speech is protected by the First Amen...
12 years ago
um...dude...are u joking right now? first of all here are the correct answers... 12 + 12 = 24 25 + 25 = 50 18 + 18 = 36 29 + 29 = 58
12 years ago
well, if this is a riddle, come back with a serious question. this is a homework help site, not a "solve my riddle" site.
12 years ago
ah...DANNY..we meet again... not sure if this is right but i'll take a shot at it... 1. convert all the info into MKS units (MKS = meters, kilograms, seconds) 19 km/hr = 5.277 m/s 95 km/hr = 26.388 m/s 0.8 km = 800 m 2. start with this equation: vf^2 = vi...
12 years ago
The same exact speed, 2.35 m/s
12 years ago
ok...either you did not read my comment or you are purposely ignoring it. my answer is "wrong" to you. ok i get that, i honestly don't care since its a riddle. This site is only meant to be for REAL questions/problems, NOT riddles, etc...
12 years ago
wait...did u mean a wavelength of "6.00 x 10^2"? if so...these are my answers a) first convert the numbers 6.00 x 10^2 nm = 6 x 10^-7 m 1.60 eV = 2.56 x 10^-19 then, plug in the numbers in this equation: KE = hc/l - w KE = (6.63E-34)(3E8)/(6E-7) - (2.56E-...
12 years ago
ok so we start out with this equation... λ = h/p so... λ = (6.63E-34 J-s)/(0.1 kg x 19 m/s) λ = 3.489E-34 m and we don't see this wave because..well...look at its size o.O
12 years ago
The Rutherford Atom claimed this theory to be true. Well, as you know, electrons CANNOT exist in orbitals. Why? Well, if the Rutherford atom fit, the electrons moving in their atomic orbits would constantly give off energy in the form of electromagnetic r...
12 years ago
start with this equation: vf = vi + at then plug the numbers in... vf = (24 m/s) + (1 m/s^2)(15 s) vf = 39 m/s
12 years ago
(17,064 ft) - (-106 ft) = 17,170 ft 106 ft is negative because its below sea level. so relative to sea level its negative.
12 years ago
ok beginning algebra, eh? so anyway... if 162 is the games they played in total then, let "x" be the number of games lost and "2x - 33" be the number games won so...we know that the total wins plus the total losses must equal total games played... now we...
12 years ago
ok we need to do a little bit of physics here... so first we need to find acceleration...how you say?...well, by using this beautiful equation!! a = (vf^2 - vi^2)/(2d) plug away numbers in their respectful places and you will get... a = ((80)^2 - (62)^2)/...
12 years ago
agreed....do you mean the two cars collided elastically with each other?
12 years ago
ahh...those algebra days... so, anyways, here's what u do... 1) identify the variables: Let the 1st integer be "x" Let the 2nd integer be "(x+1)" Let the 3rd integer be "(x+2)" 2) now, set up the equation... 3(x+2) - 9 = x + (x+1) 3) SOLVE away!!! :D 3x +...
12 years ago
ok...les see dis. first, start with this equation (P1)(V1)/(T1)=(P2)(V2)/(T2) <--- Note that numbers are supposed to be SUBSCRIPTS we are solving for the new volume, so in this case, V2. so, solve for V2... V2 = (P1 x V1 x T2)/(P2 x T1) BEFORE u plug in n...
11 years ago
yes. so... 112 + (-61) = 51 yd
11 years ago
whoops, i see what Ms. Sue did there. rlly subtraction is just adding negatives and addition is rlly subracting negatives. all relative...
11 years ago
Okay, assuming this is Alg I, I'm pretty sure you accidentally miscommunicated the problem wrong. The problem above is UN-FACTORABLE assuming only real numbers. However, if you insist, the answer to this problem requires some Alg II knowledge. Q: 9x^2 - x...
11 years ago
It's more basic than you think. 3x(6x^2 + 8x - 15) Can't factor out anything else, therefore this is the simplified form.
11 years ago
vA = 3 x vB vC = 2.2 x vB vC : vA (2.2vB):(3vB) 11:15 vC is 0.733 times more potent than vA
11 years ago
I read the Diary of Anne Frank. It' s a good read. I'm leaning towards C.
11 years ago
momentum = mass x velocity (52 kg)(5.0 m/s) = 260 kg-m/s
11 years ago
oh, and also, if it is not too much too ask, please include steps and explanations. ty
11 years ago
We kinda can't answer this question without a diagram of some sort.
11 years ago
This requires some Alg II... Initial Problem... 14x^2 + 19x + 32 = 18 Move "C term" to the right. 14x^2 + 19x = -14 Divide both sides by 14. x^2 + 19x/14 = -1 Complete the square. x^2 + 19x/14 + 361/784 = -1 + 361/784 Simplify and factor... (x + 19/28)^2...
11 years ago
Initial Problem x(6x + 1) < 15 Simplify left side. 6x^2 + x < 15 Move 15 to left side. 6x^2 + x - 15 < 0 Factor. (2x - 3)(3x + 5) < 0 Now, x MUST be BETWEEN the LESSER value and the GREATER value. (it is between because this is a "LESS THAN" inequality) -...
11 years ago
8 pages = 1/5 of the book Thus 8 x 5 = 40 pages in the book
11 years ago
Well, um...make sure you gave the percentages right. I added all the percentages together and I got 100.3%. Anyway, Imma still gunna work with these numbers just so you know the process of things. First, to make things easier, you can assume a 100 g sampl...
11 years ago
The first thing to know is that temperature is the average kinetic energy of the particles. As you might already know, kinetic energy is the energy of motion. In a solid, the particles are generally rigid (not moving a lot). Since the particles do not mov...
11 years ago
If you are working on arithmetic sequence, I assume you know this equation. x = a + d(n-1) Okay, so the first thing to do is to find the common difference. -253 = 3 + d(33-1) Solve for "d" and you get d = -8 Next, I also assume you know the equation for t...
11 years ago
Simple. All you need is this equation: λ = h/p So, just plug numbers in... λ = (6.63 x 10^-34 J*s) / (1.4 x 10^-22 kg-m/s) λ = 4.74 x 10^-12 m
11 years ago
The De Broglie wavelength can be calculated by... λ = h/p or λ = h/mv So, plug the numbers in and... λ = (6.63 x 10^-34 J*s) / [(1.67 x 10^-27 kg)(7.2 x 10^7 m/s)] λ = 5.5 x 10^-15 m
11 years ago
Things could not get easier than this. I'm sure you are familiar with this equation: E = hc/λ Therefore, plug in the numbers and solve for energy. E = (6.63 x 10^-34 J*s)(3.0 x 10^8 m/s) / (1.44 x 10^-5 m) E = 1.38 x 10^-20 J
11 years ago
To the first problem, you need to convert all the numbers to the correct units. 35 kg = 0.035 kg 160 km/h = 44.44 m/s (Hint: to convert km/h quickly to m/s, divide by 3.6) So, it is asking for the impulse which is Imp = mv Imp = (0.035 kg)(44.44 m/s) = 1....
11 years ago
In 1 cup there is 8 fl oz. 1.5 x 8 = 12 fl oz in each serving
11 years ago
Assuming this is an inelastic collision, you use this equation: m1v1 + m2v2 = (m1 + m2)vf In this equation let m1 = mass of bullet v1 = initial velocity of bullet m2 = mass of block v2 = initial velocity of block vf = final velocity of the bullet-block co...
11 years ago
let: T1 = the first try T2 = the second try So, in terms of T1, T2 will equal T2 = 8(T1) - 2 The total must be 88 so T1 + [8(T1) - 2] = 88 Solve for T1... 9(T1) - 2 = 88 9(T1) = 90 T1 = 10 So plug this back into the equation to get the number of bounces i...
11 years ago
To find the wavelength, first calculate the frequency and the velocity of the wave. f = (47) / (29.2 s) = 1.61 Hz v = (3.82 m) / (10.3 s) = 0.371 m/s Then, use this equation to find the wavelength. λ = v/f λ = (0.371 m/s) / (1.61 Hz) λ = 0.23 m or 23 cm
11 years ago
The graph of y=2 should be a horizontal line crossing through the y-axis at 2.
11 years ago
Because this is an elastic collision, you will need 2 equations. I'm sure you will be familiar with these: m1v1 + m2v2 = m1v1' + m2v2' v1 - v2 = v2' - v1' Let's make it that... m1 = mass of golf ball v1 = initial velocity of golf ball v1' = final velocity...
11 years ago
x + y = 12 x - y = 4 Usually, you could use substitution to solve, but it would be easier just to add the two equations together and... 2x = 16 x = 8 And if x is 8, then.... y = 4 There for the two numbers are 8 and 4.
11 years ago
In this case, use variables to represent the numbers. Fortunately, they are all in terms of the smaller number. So, let... x = small number (x + 3) = middle number 2x = large number If the sum is 75, then all of the numbers added together must equal this....
11 years ago
First, find the volume of the cylinder. (Make sure you have like units) V (cyl) = π(r^2)h V (cyl) = π(4 in)^2(24 in) V (cyl) = 384 π in^3 ≈ 1206.37 in^3 Next, find the volume of the cube. V (cube) = s^3 V (cube) = (1.5 in)^3 V (cube) = 3.375 in^3 After, d...
11 years ago
Or if you recognize that the triangle formed is a 17-15-8 Pythagorean triple, you can easily guess that the third side is 8 ft.
11 years ago
Looks like we need an equality equation. 0.03x = 0.02x + 420 0.01x = 420 x = 42,000 Therefore, you must sell at least $42,000 in a week in order for the straight commission offer to be at least as good as the second company's offer.
11 years ago
The general formula for a dilution is M₁V₁=M₂V₂ Look familiar? Notice how MV is the number of moles. The number of moles of H₂SO₄ solution do not change. So, all we have to do now is plug in what we know, and solve for the unknown, which is V₁. (5.0 M)V₁...
11 years ago
This is technically not a quadratic equation, but I am assuming you are trying to find the "zero's" of the function. Anyhoozies, as you should know the generic formula for any quadratic problem is... x = [-b ± √(b² - 4ac)] / 2a In this case, x = t a = -16...
11 years ago
Just to expand a little on bobpursley's answer, yes, acid A will have a lower a higher H+ ion concentration and thus a lower pH BECAUSE since you an equal amount of each solution (0.02 M), the solution that dissociates more will have a higher H+ concentra...
11 years ago
This is a subjective question. (aka opinion-based) I am assuming you are talking about the Spanish in the Caribbean where slavery was most prominent in the 1500s. Personally, I think the Spanish felt that they had the right to enslave the Indians because...
11 years ago
The population of flies is given by the function (p-s)(x). (p-s)(2) = [2(4)²] - [2(2) + 5] (p-s)(2) = [32] - [9] (p-s)(2) = 23 Thus, the population of the flies after 2 weeks would be 23.
11 years ago
In this problem, you need to find two things: the moles of solute (NO₃⁻) and the volume of the total solution. First, find the moles of NO₃⁻ we have in each solution. n₁ = (0.263 L)(0.167 M KNO₃) = 0.043921 mol KNO₃ Now, since there is one mole of NO₃⁻ pe...
11 years ago
I would agree with D.
11 years ago
Let 1/x be the length of the shortest stick. Thus, the expressions for the other two sticks are 2/x and 4/x. From this, you get this equation: 1/x + 2/x + 4/x = 1 Multiply both sides by x 1 + 2 + 4 = x x = 7 Therefore... short stick = 1/7 of whole stick m...
11 years ago
The temp of the metal can be given by the function (c+h)(x). (c+h)(x) = [(0.5)⁵⁻⁹] + [-(5) - 2] (c+h)(x) = [16] + [-7] (c+h)(x) = 9 Therefore, the temperature of the metal will be 9 degrees Celcius
11 years ago
coolio, momentum problem m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂' (90.0 g)(3.00 m/s) + (75.0 g)(-8.00 m/s) = (90.0 g)(-7.00 m/s) + (75.0 g)v₂' If you solve it out, v₂' should be 4 m/s
11 years ago
First, calculate the number of moles of NO₃⁻. n = (0.0200 L)(2.2 M Pb(NO₃)₂) = 0.044 mol Pb(NO₃)₂ Since there are two moles of NO₃⁻ per one mole of Pb(NO₃)₂ that dissociates, the umber of moles of NO₃⁻ is double the number of moles of Pb(NO₃)₂. Thus... n...
11 years ago
C is correct. Intersecting planes intersect at a single line, not point.
11 years ago
Area problem 12 in x 13 in = 156 in² 48 in x 72 in = 3456 in² 3456 / 156 ≈ 22 You can cut 22 pieces of 12x13's from a 48x72.
11 years ago
B is correct. Midpt = (-4 + 8)/2 = 2
11 years ago
When you mean "54 graders," I assume you mean kids that are NOT in the second grade. 27 + x = 54 x = 27 27 + 37 = 64 There are 64 players who play soccer.
11 years ago
Okay, so the first problem... -1 - 8(x + 12) > -44 - 8x -1 - 8x - 96 > -44 - 8x -97 > -44 The above statement is FALSE; therefore, x has no solution.... Second prob... -4(-12v - 9) + 6(-6 + 5v) > -4v + 12v 48v + 36 - 36 + 30v > 8v 78v > 8v 70v > 0 v > 0
11 years ago
whada-whada-wha? This problem is basically the same setup as the last one you had previously asked. m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂' (75.0 kg)(0.965 m/s) + (85.0 kg)(-1.30 m/s) = (75.0 kg)v₁' + (85.0 kg)(0.823 m/s) Solving for v₁', you should get -1.44 m/s. Th...
11 years ago
59 + 43 = 102 ;)
11 years ago
Woah, hey there. We are not able to just give you a one page story for you. I mean, that would be unfair, right? If you want to go to Fiji Land, try searching up the history of it, and implement that in your story. Although, the Fiji Lands were discovered...
11 years ago
Hey, Ay!! First of all, chill with the caps and the exclamation marks, no need to yell, bruh. Second, pretty sure this assignment is supposed to be based on REAL history, not a kid's show.
11 years ago
Instead of making a new thread, reply on your old one because this tends to get more unorganized. Also, I think you meant "transportation" and not "transformation."
11 years ago
Is there more information given? If not, there are multiple answers to this problem. Hey, even if she wanted, she could make 80 1-in necklaces (even though it won't fit anyone... xD ) or even 1 80-in necklaces (one size fits all :P ). There has to be some...
11 years ago
woah there, watch out molar mass of 46.08 g/mol 2(12.01) + 6(1.01) + 16 = 46.08 g thus, 49.5 g * (1 mol/46.08 g) ≈ 1.07 mol
10 years ago
oops, typo on my part second line should say: molar mass of "ethanol should be" 46.08 g/mol
10 years ago
I concur
10 years ago
Acceleration = [ (final velocity) - (initial velocity) ] / (time elapsed) Make sure you have "like" units. In this case, convert the 2.5 min to hrs and plug everything into the equaiton.
10 years ago
Way false. Chemical bonds is the attraction between atoms. Chemical change is the making or breaking of the bonds between atoms.
10 years ago
Whole pie = 6/6 One slice = 1/6 6/6 - 1/6 = 5/6
10 years ago
C = 2πr 50 = 2πr r ≈ 8.0 mm d = 2r = 2(8.0) = 16.0 mm You are looking for the diameter, not the radius. The correct answer is A.
10 years ago
y = mx + b y = new price of apartment m = amount changed per year x = change in time b = starting price of apartment it gives us one scenario, so solve for b: 125,000 = (3000)4 + b b = 113,000 Therefore, the linear function associated with this is... y =...
10 years ago
N(1975) = 4,317,183,977
10 years ago
110,000 (0.18 + 0.21 + 0.13) = $57,200
10 years ago
The burning of a hydrocarbon will yield carbon dioxide and water. C₂H₄ + 3 O₂ --> 2 CO₂ + 2 H₂O From the balanced equation, 1 mol of C₂H₄ will produce 2 mol of CO₂. I'm not sure what to do besides looking up ΔH for the reaction.
10 years ago
I believe you posted this question awhile ago. Anyway, you should get that N(1975) = 4,317,183,977 How? Use the equation for linear interpolation: y = y₀ + (y₁ - y₀) [ (x - x₀)/(x₁ - x₀) ] Putting it into context... N(1750) = A + (B - A)[(1975 - 1950)/(20...
10 years ago
Whoops, in the last line, I meant " N(1975) " and not " N(1750) "
10 years ago
x = 5 y = 12 therefore, r = √(12² + 5²) = 13 recall that cosθ = x/r therefore... cosθ = 5/13
10 years ago
Find Slope: m = (2 - -3)/(-5 - 3) = -5/8 Plug one of the points in Point-Slope Equation: y - y₁ = m (x - x₁) y - 2 = -5/8 (x + 5) Rearrange the equation to make it in Standard Form: y - 2 = -5/8 (x + 5) y - 2 = -5x/8 - 25/8 8y - 16 = -5x - 25 5x + 8y = -9...
10 years ago
a = (vf - vi)/t a = (0 - 24)/9 a = -(8/3) m/s² d = vt + at²/2 d = (24)(9) + (-8/3)(9)²/2 d = 108 m
10 years ago
d=vt Not sure what this is asking. It travels 60 km, at (80/3) km/hr for 2.25 hrs.
10 years ago
n = 0.05757... 100n = 5.75757... 100n = 5.75757... - n = 0.05757... ----------------- 99n = 5.7 n = 5.7/99 n = 19/330
10 years ago
The distance traveled does not affect the speed because it is time-dependent.
10 years ago
@Andre1: 29/500 is not the exact answer, only an estimate. Scott asked for an "equivalent"
10 years ago
Method 1: tanθ = y/x tanθ = 25/35 θ = tan⁻¹(25/35) θ = 35.54º tan(35.54º) = h/10 h = 10 tan(35.54º) h = 7.14 ft Method 2: 25/35 = h/10 h = 25/35 * 10 h = 7.14 ft
10 years ago
9 + 10 = 19 can't tell if this is a troll or actually innocent...
10 years ago
Drawing a diagonal from one corner of the square to the opposite creates two 45-45-90 triangles.
10 years ago