Friday
July 3, 2015

Posts by NIck


Total # Posts: 1,139

math/algebra
why did the kangaroo see a psychiatrist?
June 29, 2015

Statistics
brewery's filling machine is adjusted to fill bottles with a mean of 33.8 oz. of ale and a variance of 0.004. Periodically, a bottle is checked and the amount of ale noted. (a) Assuming the amount of fill is normally distributed, what is the probability that the next ...
June 20, 2015

Urgent - physics
Air molecules and dust particles in the atmosphere will scatter sunlight. From a consideration of the position of the sun, estimate the direction of incidence of the sun's rays on the atmosphere. In what direction will an observer on the earth's surface need to look if...
June 10, 2015

physics
How would you use a piece of Polaroid to look at the bottom of a pond if reflections are a problem? Would it be any different if the pond is covered with a layer of oil? Hint: (Refractive index of water = 1.33 and of oil = 1.5). Show calculations.
June 10, 2015

Chemistry
A chemist wants to make 150 mL of a 1.26 M solution of carbonic acid to be used in the lab. How many grams of H2CO3 does the chemist need to make this solution? I converted mL to .150L, multiplied .150*1.26= =0.189 to get mol. H2CO3=62.028 so I multiplied this by 0.189 to get ...
June 6, 2015

Language Arts
Can someone please check these answers I cant risk getting a bad grade at this point. These are from the book "The Giver" 1. At the beginning of the novel, Jonas describes himself as apprehensive. Why is he apprehensive? A. An unknown plane is flying overhead. B. The...
June 5, 2015

Chemistry
what volume of 0.200M KOH is needed to neutralize 32.7 grams of h3po4, which has been dissolved in 250 ml water?
June 4, 2015

Math (Grade 9)
A submarine travels 16km/h on the surface of the water and 10km/h under water. The sub covers 138km in 12 hours. I) Write 2 equations to represent; (Define Variables) total number of hours: Total distance travelled. II) Use equations to calculate the spent on the surface and ...
June 3, 2015

Chemistry
At home, you dissolve 26.0 g of AlCl3 in 1.5 kg of water. What is the freezing point of this solution? (Normal f.p = 0.0 C, Kf= 1.86 C kg/mol)
May 4, 2015

chemistry
How many sigma (σ) bonds and pi (π) bonds are in one molecule of arsenic acid, H3AsO4
May 2, 2015

physics
A box is suspended by a steel wire via a frictionless pulley The wire has a mass per length of µ = 24.5 × 10 − 3 kg/m. The box is so heavy and the wire so thin that the mass of the wire does not influence the wire tension. The horizontal part of the wire has ...
April 16, 2015

physics
Did you examine the picture? There are angles involved. The nail is at a 30 degree angle in the wood.
April 7, 2015

physics
Thank you very much. That makes sense. I will apply that reasoning.
April 7, 2015

physics
The web address is posted below my question if you would like to see the picture. The (dot)=.
April 7, 2015

physics
The instructor wants us to use the sum of the torques to figure out the problem.
April 7, 2015

physics
Yes. Still need help figuring out the forces exerted though.
April 7, 2015

physics
The figure below shows a clawhammer as it is being used to pull a nail out of a horizontal board. A force of magnitude 130 N is exerted horizontally as shown. (NOTE: Assume that the force the hammer exerts on the nail is parallel to the nail and perpendicular to the position ...
April 7, 2015

math
given that the rectangle above has a perimeter of 34 units, find m<klj. round the answer to the nearest hundredth
March 31, 2015

physics
A penny is dropped from the top of a building 310 m high. Ignoring air resistance, if the penny falls straight down, with what speed would it hit the ground?
March 25, 2015

Calculus
∫ x^3 √(16-x^2) dx evaluated between [0, 4] I know this is solved using trigonometric substitution, but I'm not sure how to work it. Please show steps so I will understand.
March 14, 2015

physics
a) w= (2pi rad)/60 sec = .105rad/s b) v= wr = .105*24 = 2.52cm/s c) a= 0 rad/s^2
March 5, 2015

physics
a) w= (2pi rad)/60 sec = .105rad/s b) v= wr = .105*24 = 2.52cm/s c) a= 0
March 5, 2015

World History
can u delete this please
March 5, 2015

World History
1. What is Social Darwinism and how was it tied to imperialism? Social Darwinism is the belief of “Survival of the Fittest”. During the struggle between nations there were different factors that went into how you were treated like your ranking in society and your ...
March 5, 2015

World History
What is Social Darwinism and how was it tied to imperialism?
March 5, 2015

World History
9. In which colony did the United States have control over to make them an imperial power? a. Vietnam b. Philippines c. India is it b?
March 5, 2015

World History
6. Which form of resistance to British rule in India was MOST effective? a. Non-violent civil disobedience under Mohandas Gandhi b. Sepoy Rebellion ****** c. Pressure from foreign powers 7. European nations used two types of rule, indirect and _________ to control their new ...
March 5, 2015

World History
4. What was a consequence of British imperial rule in India? a. Indian culture exceled and the people of the country became wealthy. b. Indian people were massacred in Jallianwala Bagh and their culture decimated. c. Gandhi became a prominent leader for the British. 5. Which ...
March 5, 2015

World History
is it A?
March 5, 2015

World History
3. Nationalism is… a. Pride in one’s country especially marked by a belief in the superiority over other countries b. Policy of cooperation between nations to expand trade c. Diplomatic strategy to promote exploration I think I know it, but I wanna make sure. what do...
March 5, 2015

World History
1. Competing among nations to gain foreign territory and influence is the definition of ___________. a. nationalism b. realism c. imperialism I think it's c
March 5, 2015

civics
hi i need help on the cold war? and world war 2? what happen in the cold war and world war 2
March 3, 2015

gen chem
What is the ph of a soulution made by adding 0.20 mole NH3(aq) to 0.30 mole NH4Cl and 0.10 mole KOH to 100ml of water? Kb for NH3 (aq)=1.8x10^-5M
March 1, 2015

math
The accompanying tree diagram represents a two-stage experiment. (Let x = 0.3, y = 0.7, r = 0.55, s = 0.45, t = 0.55, and w = 0.45.) (a) Find P(A) · P(D | A). Correct: Your answer is correct. (b) Find P(B) · P(D | B). Incorrect: Your answer is incorrect. (c) Find...
February 24, 2015

English
Is This Parallel? Either you can eat or talk, but you can't do both at the same time.
February 24, 2015

Math
42x1/3=14 each girl received twice as many tickets or (2x) 14 girls(2x)=840 28x=840 x=30 per girl 15 per boy
February 19, 2015

Math
john and Julia are playing a game of darts. For each round, eqch of them throws exactly one dart and receives the number of points indicated in region of dartboard where the dart lands. Just after the first round , the dartboard looks like the diagram above. The players are ...
February 12, 2015

Physics-Electricity
A toaster consists of 4 heating elements that are connected in parallel. The toaster is connected to a 240 V mains supply. When the toaster is switched on, a current of 2.5 A is drawn from the mains supply. Calculate the electrical energy used by a single heating element in ...
February 11, 2015

Programming
The following is the Ticket for ABOOD Bus service Passenger’s Names: Going to: Date of issue: Report time: Seat no: Fare: Date of travel: Departure time: Bus no: Write a program to generate tickets for 30 passengers and save these tickets in an output document file Hints...
February 3, 2015

Thermodynamics
thanks i got it in the end
February 1, 2015

Thermodynamics
what is Tinitial for which?
February 1, 2015

Thermodynamics
A 196-g aluminum calorimeter contains 530 g of water at 19.8° C. Aluminum shot with a mass equal to 273 g is heated to 100.0° C and is then placed in the calorimeter. Find the final temperature of the system, assuming that there is no heat transfer to the surroundings.
February 1, 2015

Algebra Rearrangement
Ah ok thank you :)
January 24, 2015

Algebra Rearrangement
Please rearrange h=rx^2-tx to make x the subject.
January 24, 2015

Math
Adrian jogs 3/4 mile each morning how many days will it take him to jog 3 miles what do you do
January 20, 2015

Chemistry
A solution contains 23.1 ppm of dissolved Fe(NO3)3 (241.860g/mol), which dissociates completely into Fe3+ and NO3- (62.005g/mol) ions. Find the concentration of NO3- in parts per million
January 9, 2015

Chemistry
What is the equilibrium molarity of chloride if 19.6g of CaCl2 (110.984g/mol) is dissolved in water and diluted to 0.500L?
January 9, 2015

math
Emily spent 1/2 of her money at the store. Then she spent 1/2 of what was left at the bakery. next she spent 1/2 of what was left at the music store. She spent the remaining$6.00 at school. How much money did Emily start with?
December 9, 2014

trigonometry
At a swim meet, a parent is videotaping his son from a seat in the stands that is 20 meters past the starting line and 8 meters away from his son's lane. Let x represent the distance the son has swum. a. Write x as a function of (theta). b. At what angle does the parent ...
December 7, 2014

physics
Atoms in a solid are not stationary, but vibrate about their equilibrium positions. Typically, the frequency of vibration is about f = 4.55 x 1012 Hz, and the amplitude is about 2.69 x 10-11 m. For a typical atom, what is its (a) maximum speed and (b) maximum acceleration?
November 30, 2014

Physics
A 2.00kg solid sphere of radius 5.00cm rolls down a 20 degrees inclined plane starting from rest. (a) What is the magnitude of the acceleration of the center of mass of the sphere? (b) How far down the plane does it roll without slipping in 1.00s?
November 29, 2014

Math
A bag contains 10 white balls and 6 yellow balls. We need to add 112 balls to the bag and keep the ratio the same. How many of each do we need to add. - What's the correct formula to use?
November 25, 2014

physics
In an effort to loosen the bolt on the wheel of a car, a man with a mass of 70kg steps on the end of a 50cm tire iron which is extending horizontally from the bolt. How much torque is he applying to the bolt?
November 23, 2014

Calculus Help
Ha.. I was just using a old fashion calculator and hoping I could do the rest in my head. But thanks I think I understand now. =D
November 16, 2014

Calculus Help
If f(x) = sin(7 − 5x), find f′(π), which is the derivative at π: −0.754 −0.657 0 0.657 3.770 I chose 0.657 ... I did not really get this exact answer, its just that while I was trying to figure this out my answer was actually 0.6978 but I just...
November 16, 2014

Economics
If stores are charging the same prices for their merchandise, what techniques might each one adopt to differentiate its products and services from the others? What kind of competition does this illustrate?
October 30, 2014

math
After the thousandth visitor, the rooms that the light switches are still on are the ones that the numbers are a perfect square. For example, room number 4, 9, 16, 25, and 36 will all be on.
October 20, 2014

AP Chemistry
Which of the following sets of quantum numbers are allowed for an electron in a hydrogen atom? a)n=3, l=0, ml=0 b)n=4,l=1,ml=-1 c)n=2,l=1,ml=-2
October 19, 2014

Chemistry
7. The specific heat of wood is 2.03 J/g∙°C. How much heat is needed to convert 550. g of wood at -15.0°C to 10.0°C?
October 18, 2014

Chemistry
Calculate the number of moles in 8.50x1015 atoms of 4He.
October 1, 2014

Algebra 2
Thanks I hope it's right
September 24, 2014

Algebra 2
Without graphing, identify the verx, axis of symmetry, and transformations from the parent function f(x)= absolute value of x y= 4- absolute value of x-2
September 24, 2014

Calculus
A sinusoidal section is to be built as part of a roller coaster track. The high point is h=27 m at a horizontal distance d=0 m. It has a low point at h=-3 m at d=50 m. a. Write an equation expressing h in terms of d. b. The lengths of the horizontal timbers used to build the ...
September 23, 2014

Calculus
Scorpion Gulch and Western Railway are preparing to build a new line through Rolling Mountains. They have hired you to do some calculations for tunnels and bridges needed on the line. You set up a Cartesian coordinate system with its origin at the entrance to the tunnel ...
September 23, 2014

Calculus
A spacecraft is in an elliptical orbit around the earth. At the time t=0 hours, it is at its apogee (highest point), d=1000 km above the earth's surface. It is at its perigee (lowest point) d=100 km above the surface 50 minutes later. a. Assuming that d varies sinusoidally...
September 23, 2014

Calculus
At a certain point on the beach, a post sticks out of the sand, its top being 76 cm above the beach. The depth of the water at the post varies sinusoidally with time due to the motion of the tides. The depth d is modeled by the equation d=40+60cos(pi/6(t-2)) where t is the ...
September 22, 2014

Algebra
Given a point (-2,5determine a point that satisfies the specified symmetry. 1. Origin 2. y-axis 3. x-axis 4. y=x
September 22, 2014

c
Lets think of the situation. It doesn't tell you how big the pool but you can make up a value. To make it easier use a number that it a multiple of both 4 and 9. In this case it would be 36. Okay say the pools need 36 gallons of water to be full. To find the rate for each ...
September 16, 2014

Physics
A light bulb is placed 21.7 cm in front of a concave mirror. When the concave mirror is replaced by a plane mirror in the same location, the bulb's image moves 4.60 cm closer to the mirror. Calculate the focal length of the concave mirror.
September 11, 2014

spanish please check!
Form complete sentences using the information provided. Use the preterite tense of the verb. 1. ir / al / semana / pasada / yo / dentista / la ______________________________________________________________ 2. parque / Pablo / y / correr / perro / su / por / el ...
August 25, 2014

spanish please check!
Yo fue al dentista la semana pasada Pablo corrio el perro y su por parque ellos leyo periodicos tres cada dia Dona Rita supo la historia de nunca la verdad
August 25, 2014

Spanish
complete sentences using the information provided. Use the preterite tense of the verb. 1. ir / al / semana / pasada / yo / dentista / la 2. parque / Pablo / y / correr / perro / su / por / el día / leer / ellos / periódicos / tres / cada 4. nunca / la historia...
August 25, 2014

Algebra
If p(x) is a polynomial and is divided by (x-k) and a remainder is obtained, then that remainder is p(k). If the quadratic p(x)=x^2-3x+5 gives the same remainder when divided by x+k as it does when divided by x-3k find the value of k, k is not equal to 0. This is the answer ...
August 2, 2014

Logarithms
Ah I get it now thank you! :)
August 1, 2014

Logarithms
How is log(a/bc) the same as log(a) - log(b) - log(c). Should it not be '+ log (c)'?
August 1, 2014

Spanish use of Imperfect Verbs
Sorry we are supposed to write about our vacation in an overseas country using past,present and future tenses. As long as we use the Imperfect, Preterite etc. in the right places, it's fine.
July 26, 2014

Spanish use of Imperfect Verbs
Here's my edited version: ¡Hola mis amigos y familias, me llamo Nick y soy en Miravida Soho en Buenos Aires, la ciudad mayor de la Argentina! Yo he estado en Sudamérica con mi familia pero no he ido nunca a Argentina. Mis compañeros de viajes vieron de ...
July 26, 2014

Spanish use of Imperfect Verbs
And I would like to give you some advice as 'me gustaría os dar/daros algunos consejos'?
July 26, 2014

Spanish use of Imperfect Verbs
Thanks for all the help! Just a quick question, would you say "But before I finish" as 'pero antes yo termino' or is there another way?
July 26, 2014

Spanish use of Imperfect Verbs
Can someone please check if I've used the Imperfect correctly? Thank You :) ¡Ola mis amigos y familias, me llamo Nick y soy en Miravida Soho en Buenos Aires, la ciudad mayor de Argentina! Mis compañeros de viajes y yo pasamos un buen rato hoy. En la mañ...
July 26, 2014

Spanish
Can someone please just proof-read this? Especially the use of the imperfect and por/para. And don't worry about punctuation :) ¡Ola mis amigos y familias, me llamo Nick y soy en el hotel primero de Buenos Aires, la ciudad mayor de Argentina! Mis compañeros de...
July 25, 2014

Books
I didn't even think that theme was a sociological one (I'm still only in high school), that theme is just something I thought up of. And yes, my teacher said we are allowed to do fictional texts. In fact, any text at a high enough reading level is appropriate. I don&#...
July 17, 2014

Books
They're actually visual texts. One is the TV series Marvel's Agents Of Shield and the other one is the movie Dawn of the Planet of the Apes. Our teacher said to have a mixture of both written and visual but I can't think of any that would include that theme.
July 17, 2014

Books
I'm doing a paper in which I have to write about 4 texts and their connection to a theme. I already have 2 and am looking for 2 more texts. My theme is "How one can never lose his roots, no matter how much influence society has on him", or something similar. ...
July 17, 2014

statistics
assuming that you wished to have the highest possible score on an exam relative to ht e other scores, would you rather have a score of 70 on a test with a mean of 60 and a standard deviations of 5.2 or a score of 81 on a test with a mean of 79 and a standard deviation of 7.1?
July 14, 2014

mqr/117
Select the x-coordinate of the vertex of the parabola defined by the function f(x)=5x^2+3x+1
July 13, 2014

Spanish
Next week I will be in Mendoza, after spending some time in Salta. There I will drink some of their famous wines and see the historical sights. Then I’ll come back home from El Plumerillo Airport! Argentina is a beautiful country, but there can be thefts and hooliganism. ...
July 7, 2014

Spanish
Sorry for the late reply. This is the stuff I want to talk about. I realize this is a lot so some bits will be cut out. I’m in Salta now on day 5 of my 11-day tour of northern Argentina. I arrived at Rio Gallegos International Airport early Monday morning and got picked ...
July 7, 2014

Spanish
Thanks but that's just what we need to include. I was wondering if someone could provide me with sentence starters in spanish because we haven't worked on this in class at all, so they would at least give me an idea as to how to write my speech
July 7, 2014

Spanish
Our spanish class has been given a 1-minute speech to write up over the holidays, but our teacher hasn't provided us with any extra material we can use. I was wondering if you could give me sentence starters etc. to help me work on it. Here is the scenario: (my chosen ...
July 7, 2014

mat/117
Select the value of x that is the solution for the equation 6/x=7/x+3
July 6, 2014

math/117
An object 5.7 feet tall casts a shadow that is 17.1 feet long. How long in feet would the shadow be for an object which is 19.5 feet tall?
July 6, 2014

accounting
The formula for computing additional paid-in capital in excess of par is shares of stock times
June 21, 2014

math!!
A 9-pack of toy cars costs $8.58. What is the unit price, rounded to the nearest cent?
June 3, 2014

math
6b/3a+b/a
May 31, 2014

algebra
A store sells mixtures of almonds and cashews for $6.50 per pound. Peanuts sell for $2.95 per pound and cashews sell for $7.95. How many pounds of each should be used to make 80 pounds of this mixture?
May 28, 2014

Spanish
Ok thank you :)
May 23, 2014

Spanish
First of all, thanks so much for all your tips :). Secondly, it's not an essay, it's an oral exam whereby we speak to our partners without any cues or notes. Our teacher told us to revise the preterite, though I don't quite understand the differences between this ...
May 23, 2014

Spanish
Hi, yes I knew about the accent marks and punctuation, I just didn't have the time to put them in. Sorry, I should have pointed that out earlier. Also, we are supposed to include some small talk, so I was thinking we could talk about the weekend by asking something like &#...
May 23, 2014

Spanish
Sorry I just realized it's a bit hard to see who's talking.
May 23, 2014

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