Questions Asked on
November 4, 2016

chemistry
Quantum numbers arise naturally from the mathematics used to describe the possible states of an electron in an atom. The four quantum numbers, the principal quantum number (n), the angular momentum quantum number (ℓ), the magnetic quantum number (mℓ),
asked by Jordan 
maths
in a certain code "7 8 6" means "bring me apple" , "9 5 8" means "peel green apple" and "6 4 5" means "bring green fruit", which of the following is the code for 'me'?
asked by kishore 
Drivers ED
To compromise space means to? A:Maximize hazards B:Minimize hazards**** C:Narrow the space between vehicles D:Speed up
asked by Marylyn 
algebra 1
Write an equation in slopeintercept form for the line parallel to y = 5x  2 that passes through the point (8, 2)
asked by lina 
Physics
At the surface of a certain planet, the gravitational acceleration g has a magnitude of 12.0 m/s^2. A 21.0kg brass bell is transported to this planet. What is (a) the mass of the brass ball on the Earth and on the planet, and (b) the weight of the brass
asked by Luce 
Spanish Literature
The Questions are presented to me in Spanish, I then translated them to try to understand them. I have submitted my answers in English and Spanish in case there is any confusion to what I am attempting to write Questions 15 Literature Act III La Dama del
asked by Jaylnn 
chemistry
Which neutral atoms have the following electron configurations in either a ground state or excited state? Enter the name or symbol. [Ar]4s23d3  I know that this is Vanadium [Xe]6s24f1  I thought that this was Lu but it counts it wrong each time! Help
asked by Jordan 
Physics
In physics, work is defined as the product of the A) net force and the distance traveled B) net force parallel to the motion and direction traveled C) net force parallel to the motion and the time it is applied
asked by Beth 
Maths
A box contains different coloured counters, with P(purple)= 10%, P(yellow)= 2/3 and P(orange) 1/7. a. Is it possible to obtain a colour other than purple, yellow or orange? b. What is the minimum number of counters in the box c. If the box cannot fit more
asked by Jim 
Maths
A spinner numbered 1 to 50 is spun twice. Find the probability that the total from the two spins is: a. 51 b.55
asked by Jim 
phy
a rubber ball is thrown against a horizontal wall and bounces back with the same speed it came in at. The change in momentum vector of the ball is A) 10 m/s^2 B) in the same directions the ball's initial motion C) in the opposite direction as the ball's
asked by carol 
Math
A belt fits tightly around two pulleys of radii 4 cm and 6 cm respectively and the distance between their centers is 20 cm. Find the length of the belt. I know the answer is 71.62cm from the answer key but I need to know the process to get there. The
asked by Wilmer 
Spanish Lit Part 2
La Dama del Alba Questions 610 6. ¿Qué misterio existe para la Peregrina en cuanto a Angélica? What mystery exists for the Pilgrim as for Angelica? The grandfather tells La Peregrina if she must take someone or something, to take him, his cattle or his
asked by Jaylnn 
math
two similar hexagons have corresponding sides of 2cm and 5cm
asked by femi 
chemistry
A 0.940g sample of barium chloride dehydrate is heated and 0.800g of anhydrous residue remains after cooling. A. How many moles of anhydrous barium chloride were present in the sample? B. How many moles of water were present in the sample?
asked by Aima 
Physics
A ball of mass 0.1kg dropped from a building of 8m high unto a hard floor bounces back to a height of 2m. Calculate the change in momentum , if the ball is in constant with the floor of 0.1s, what is the force exerted on the body . (g = 10ms)
asked by Lauryn 
spanish
How do people in the Spanish speaking world invite people to their parties? A) Formal, written invitations B) Posting the celebration in the newspaper well in advance C) Verbally without much notice Which of the following is not true about Barcelona? A) It
asked by Cyborg_DRAGon 
History
Why did minority groups receive limited benefits from Progressivism? A:Minority groups did not wish to Americanize B:The Supreme Court barred minority groups from gaining more rights. C:Many Progressives held racist ideas about minority groups**** D:Few
asked by Marylyn 
Science
How many grams of sugar are needed to make a saturated solution of sugar in 100g of water at 20 degrees Celsius?
asked by Jay 
chemistry
When the following solutions are mixed together, what precipitate (if any) will forms? Write the reaction equation for all the cases and write the net ionic equation for only those reactions that react: potassium nitrate solution and barium acetate I am
asked by Jordan 
chemistry
A sample of 45.1 g of methane gas (CH4(g)) has a volume of 6.20 L at a pressure of 2.90 atm. Calculate the temperature. Another one that I'm stumped on, last question for my practice exam, can you explain how to solve?
asked by Jordan 
chemistry
Why is it necessary to heat the hydrate gently at first and then more strongly only after most of the water has been driven off?
asked by Missy 
Chemistry
N2(g) + 3H2(g) > 2NH3(g) How many grams of ammonia are formed from 14.0 grams of nitrogen? 14/2 = 7 grams of ammonia
asked by Anonymous 
Physics
An electric train leaves a station starting from rest and attains a speed of 72km/hr in 10 second. Then it undergoes uniform retardation for 20 second to come to halt at the next station then calculate i) the distance between the train stations. ii) the
asked by Amrit 
Physics
For a certain projectile, the horizontol range is twice in magnitude of the maximum height attained by it. Find its angle of projection.
asked by Amrit 
Physics
A "swing" ride at a carnival consists of chairs that are swung in a circle by 17.9 m cables attached to a vertical rotating pole, as the drawing shows. Suppose the total mass of a chair and its occupant is 193 kg. (a) Determine the tension in the cable
asked by BrookeNeed 
algebra
simplify √847
asked by meg 
science
a stone is thrown at an angle of 30* with the horizontal direction which strikes the tip of the building 2 m height ,if the distance of the building from the point of observation is 10 metre .find the velocity of the projectile of the stone.
asked by nirmal kumar 
English
1. Read all the sentences on the page. 2. Read all the sentences of the page. Which one is correct? Are both okay? Which one is commonly used? 3. Read Part 1 in a loud voice. 4. Read Part 1 with a loud voice. Which preposition do we have to use? 5. All up
asked by rfvv 
Math
Four students work to find an estimate for square root 27. Who is closest to finding the true estimate? (1 point) Chelsey: "Use square root 16 and square root 25 to estimate." Carley: "I use square root 25 and square root 36." Jamie: "It should be between
asked by Philisnotonfire 
algebra
what number is between 1/6 and .25? A.) 7/24 B.) 1/7 c.) 2/7 D.) 5/24  is it this? help please ;)
asked by meg 
Chemistry
At high concentrations of [H2] the observed rate law is found to change to the form: Rate = k[NO]^2 i.e. the rate becomes independent of [H2]. 1. Assess whether the two step mechanism: H2 + 2NO → N2 + H2O + O (k1) O + H2 → H2O (k2) can explain this
asked by Susie 
Chemistry
Methane and diamond have covalent bonds.Explain why methane is a gas and diamond is a solid at room temperature.
asked by Maureen 
Math
Anne, Ryan and Joel collect empty cans. They collect a total of 1925 cans. Anne collects half as many as Ryan. Joel collects twice as many cans as Ryan. How many cans does Joel collect? Use bar model to solve.
asked by Mike 
PreAlgebra
Explain how to model the multiplication of –6 and 3 on a number line.
asked by Britney 
Physics
Ice floats with one ninth of its volume above water. What is the relative density of ice?
asked by Kity 
Maths
If I sold my car for $8400, I wold lose 25%. How much did I pay for my car?
asked by Dodo 
mathematics
solve m2+6m+7 using completing the square method
asked by anthony 
Physics
Two boxes are stacked in an elevator that is accelerating downwards at 3.49m/s/s. A smaller 3.06kg box is on top and a larger 9.93kg box is on bottom. Find the magnitude and direction of the force that the smaller mass exerts on larger.
asked by Josh 
Anatomy
The average heart beats about 100,000 times a day. I said true is that right?
asked by FireQuick 
Social Studies
Do you think the Declaration of Independence was a good way to declare independence from Britain? Why or why not?
asked by Subway 
Algebra
During a science experiment, Nico created a 32%alcohol solution by mixing 8 fluid ounces of a 50% alcohol solution with a certain amount of an 8% alcohol solution. How many fluid ounces of the 32% alcohol solution did he create?
asked by Jj 
English 10 A
I am doing the Character Analysis Portfolio, and need to make a thesis statement, answering the following questions: Why is this character significant to the plot of the story? How does this character contribute to the development of a central theme? Could
asked by Trixie 
help help help sir steve
find 16^1/3 without the use of calculator plzzzz help i dont know it
asked by Anonymous 
Math
Pedro spent 2 1/5 hours on his math himework and half as lomg on his science homework one weekend. If his english and social studies homework took 7/8 as long, how much time did he spent on homework that weekend?
asked by Anthony 
brain drain
some have more than a hundred some have none
asked by Tytus 
Physics
Two workers pull horizontally on a heavy box, but one pulls twice as hard as the other. The larger pull is directed at 25 degree west of north and the resultant of these two pulls is 350 netwon directly northward. Use vector components to find the
asked by Amrit 
Math
A fence around a square garden is madr up 4 equalsized pieces that are each 5 1/2 feet long. Matt decided to make the sides 2 1/2 times longer. How much fencing does he need in all?
asked by Anthony 
Calculus  Differential Equations
Use separation of variables to find the solution to the differential equation: 4 (du/dt) = u^2, subject to the initial condition u(0)=6.
asked by James 
Physics
Rain drops hitting the side window of a car in motion often leave diagonal streaks if there is no wind. Why?
asked by Amrit 
Calculus  Falling Body Problem
Near the surface of the earth, the acceleration of a falling body due to gravity is 32 feet per second per second, provided that air resistance is neglected. If an object is thrown upward from and initial height of 3000 feet with a velocity of 75 feet per
asked by Jamie 
MATHS
Area is28cm andheight is 2.1 how much of water storw in drum (1liter is =1000cc
asked by SUNITHA 
Math
The sum of a number and 10 is 10
asked by Cynthia 
Math
Write a divison equation that has a solution of 20
asked by Em 
Math
800 by 11.5%
asked by Dono 
Core World History
What are 5 events for both the rise of Empires and the fall of Empires from prehistory to A.D. 1600?
asked by Lenae 
Maths
800 by 11.5%
asked by tudor 
chemistry
10 litres of a monoatomic ideal gas at 0degree celsius and 10atm pressure is suddenly released to 1atm and the gas expands adiabatically against this constant pressure. find the final temperature and volume
asked by dhwani 
Calculus  Differential Equations
Use separation of variables to find the solution to the differential equation: 4 (du/dt) = u^2, subject to the initial condition u(0)=6. So far, I have: 4 du = u^2 dt 4/u^2 du = dt 4/u = t+C I am unsure what to do from this point...
asked by Abby 
Math
Davis High School MultiStep The heights of the starting players for the and 69 in. Find the team are 78 in., 74 in., 71 in., 7o in., Boys basketball average height of the starting players.
asked by Anonymous 
Math
A shopkeeper buys a table at ₹300 and sells it for Rs.375.Find his loss or gain percentage.
asked by Jack 
Calculus
A particle is moving with acceleration a(t) = 24 t + 4. Its position at time t =0 is s(0) = 15 and its velocity at time t =0 is v(0) = 11. What is its position at time t = 9?
asked by Sam 
S.S
Beginning in the 1600's, the Tokugawa shoguns who ruled japan tried to maintain stability and order by?
asked by Me time 
Prealgebra
Sonia is creating a visual diagram to show the relationship between rational numbers and whole numbers. She draws it to show that some whole numbers are rational numbers and some are not. Is this correct? Explain why or why not All numbers are rational
asked by Britney 
science
a stone is thrown at an angle of 30* with the horizontal direction which strikes the tip of the building 2 m height ,if the distance of the building from the point of observation is 10 metre .find the velocity of the projectile of the stone. ans...
asked by nirmal kumar 
Calculus  Special sum formulas
Find a formula for Sum_{j=1}^n (j+3) (j4) So far, I have foiled to j^2j12. Thus,Sum_{j=1}^n(j^2)  Sum_{j=1}^n(j)  Sum_{j=1}^n(12). From Special Sum formulas, I have gotten to n(n+1)(2n+1)/6  n(n+1)/2  12n What do I do from here?
asked by James 
Geometry
Find the radius of a circle whose circumference is 37.3cm (Take pie =3.14cm)
asked by Yukti behl 
math
what is the value of x in 16 to the power of 2 = x 256 256 4 4 i think 4 or 4
asked by YunoGasai 
history
what was happening in the late 1800s in Germany? why German immigrants went to America?
asked by Nikki 
Stats
In each hand of Blackjack, Megan wins $2 with probability 0.1, or wins $1 with probability 0.3, or loses $1 with probability 0.6. Suppose Megan continues to play 100 hands of Blackjack, and assume the outcomes of all plays are independent. (a) Compute the
asked by Dan 
chemistry
How many milliliters of concentrated nitric acid, HNO3, 70 % (wt/wt) are required to prepare 1 liter of 0.250 M solution? The molar mass and density of HNO3 are 63.0 g/mol and 1.36 g/cm respectively.
asked by karen 
social studies
what would be the most likely effect of a southern European economic boom on the regions immigrants? A) immigrants would be more welcome because their labor would be needed B) immigrants would be more welcome because they would be responsible for the
asked by donuts 
Calculus  Special sum formulas
Find the formula of n Σ (j+3)(j4) j=1 I have gotten to n(n+1)(2n+1)/6  n(n+1)/2  12n How do I simplify it from there?
asked by Jamie 
show low high school
he first number is 3 more than the second number. the sum of the number is 25. find the number.
asked by joey 
physics
if a swimmer can swim in still water at a speed of 7.3 m/s and he intends to swim across a river that has a downstream current of 2.5 m/s what is the swimmers direction?
asked by Lily 
Calculus
let a_i = 2^i 20 Find Σ a_(i+1)a_i i=1
asked by Josh 
Maths
Sophie has randomly chosen a card from a standard deck and placed it in her pocket. She is going to randomly choose a second card from the deck. a.What is the probability that she chooses the same card as the one in her pocket b. what is the probability
asked by Ted 
ss
Since Greenwich, England is on the prime meridian, which of the following is a line of longitude that would be found in North America? a. 45Ã‚Â° N c. 30Ã‚Â° S b. 70Ã‚Â° E d. 100Ã‚Â° W
asked by Anonymous 
chemistry
Write a balanced equation for the doublereplacement precipitation reaction described, using the smallest possible integer coefficients. A precipitate forms when aqueous solutions of iron(II) iodide and sodium hydroxide are combined.
asked by Erika 
Math
Ram wants to cover the floor of a room 5meter wide & 8meter long by squared tiles. If each square tile is of side 0.5 meter, then find the number of tiles required to cover the floor of the room.
asked by Megha 
Algebra
2/5x9
asked by Person who is confused by sets 
Physics
) A car is traveling on a straight, horizontal road at 20 m/s when the driver slams on the brakes. The force of friction between the car and the road is 900 N. The mass of the car is 1800 kg. (a) Make a free body diagram for the car on the set of axes
asked by Tommy 
Math
a recipe for 2 dozen cookies calls for 1 1/3 cups of flour.how much for would be needed to make five dozen cookies?
asked by Rachel 
Calculus Reimann Sum
Approximate ∫_2^3(x+3)dx via the Riemann sum. Use the partition of five subintervals (of equal length), with the sample point barx_i being the right end point of the ith interval. I attempted this problem and got 40/3, but it's not being accepted. I'm
asked by Anonymous 
Maths
A page of text is analysed, and of the 150 words on it, 30 are nouns, 10 of which start with a vowel. Of the words that are not nouns, 85 of them do not start with vowels. a. If the word on the page is chosen at random, what is the probability that it is a
asked by Ted 
Socioogy
Can you give any web sites for dummies related to dependent variable measures (inter item reliability Cronbach's Alpha)? Also, dependent variable index by category of independent variables (cross tabulations), and how much of an effect your independent
asked by Bralu 
Mathematics
9A. Solve the inequality.Show all steps.15 > 7  t/3 9B. Check your work. Hi. I'm not trying to cheat. I don't understand the equation. If you see another question by me with the same question, I'm sorry. I had hit submit and it wasn't there. Sorry.
asked by Invisible 
PreAlgebra
Use properties of equality to simplify each of the following expressions so that you can simplify them in your head. Identify the properties used and describe how you used them. 1. 4 • (–3) • 5
asked by Britney 
AP Physics
The length of the cannon barrel is 1.7 m and the cannon is aimed at a 38◦angle from the ground.The acceleration of gravity is 9.8 m/s^2. If Dread Pirate Roberts tells you he wants the ball to leave the cannon with speed Vnot = 76 m/s, what mass cannon
asked by Connor 
math Trigonometry
If cos degree equals to 0.8641 What is Sin degree? I have no idea how to find this. Please help me. Thank you
asked by Simran 
Adv function
(2sin^2x)/sinx=sinx Is this doable. That's the answer but I can't get the l.s to equal r.s
asked by Anonymous 
PreAlgebra
Associative property I think. 2. (2.25 • 23) • 4 2.25x23=51.75 4x51.75=207
asked by Britney 
Reading
What is a linking verb
asked by Skylar 
Algebra 2
Consider the graph of f(x)=2[[x/3]] +4 with doman {x0
asked by Anonymous 
communications
what is the most distorted or misinterpreted topic on the internet?
asked by Alex 
chemistry
Molarity material = density x 1000 x (%/100) x (1/molar mass material) 1000 indicates?
asked by karen 
math
Pupils contributed some money to help needy people. They bought twenty four 2kg packets of ﬂour, thirty six 1kg packets of ﬂour and a ﬁfty kilogram bag of sugar. The ﬂour was packed in 500g packets and the sugar in 250 g packets. How many people
asked by kgk 
math
an open box with dimension 2 inches x 3 inches x 4 inches needs to be increase in size to hold 5 times as much as material as the current box? a. write a function that represents the new box b.find the dimension of the new box c.make a mathemathical
asked by kris linbern 
mathe arithmetic progression
If the term 7th of an A.P are 18 and 30 respectively.find the 13th term
asked by nikhil 
American Government
What is the main controversy over citizen requirement for the presidency? A. whether a person is a "natural born citizen". B. whether a person with dual citizenship can be president. C. whether an undocumented citizen can be president. D. whether a person
asked by Savanna 
Chemistry
How much energy in joules does it take to raise the temperature of 255g of water by 12.5 C? I just don't know which formula to use. Every formula I look at has 3 components needed, but I'm only given 2. Thanks :)
asked by Aiyanna 
Tricky Math Question
What is 0^0 equals to? a.1 b.0 c.undefine
asked by Doyll 
Physics
An airplane has a mass of 2.8×106 kg , and the air flows past the lower surface of the wings at 81 m/s . Part A: If the wings have a surface area of 1100 m2 , how fast must the air flow over the upper surface of the wing if the plane is to stay in the
asked by Ashley 
Mathematics
How to use graphs to solve quadratic equations
asked by Omar 
science
0.150 L of 0.420 M H2SO4 is mixed with 0.100 L of 0.270 M KOH. What concentration of sulfuric acid remains after neutralization?
asked by sadie 
Math
$10 is which amount of money,rounded to the nearest dollar? My work: $ 9.52. Is it correct?
asked by F. 
Math
The radius of a neon atom is 3.1×10(exponent 11) meters. The radius of a silver atom is 1.65×10(exponent 10) meters. What is the diffrence in the raddi of the two atoms? A.0.000000000134m B.0.0000000005115m C.0.000000000196m D.0.0134m
asked by Gissele Alvarez 
Science
0.745 g of kcl disloved in 100 ml of water,then molarity?
asked by Sonu 
Math
Kaylin recorded how much she grew in inches each month for four months and recorded the results as:0.75,0.3215,3/8,9/16. list the inches she grew each month in order from least to greatest
asked by D&B NATION4L 
Chemistry 101
Which calorimeter do you use for determining the specific heat of the metal, the thermos or the Styrofoam cup?
asked by Dina 
Math
Josh sold his bike for 10% less than he paid for it. IF he sold the bike for 585 how much did he pay for it?
asked by Ann 
math
A person that is 1.6 m tall casts a 4 m shadow. At the same time, a nearby tree casts a 12 m shadow. What is the height of the tree to the nearest tenth of a metre?
asked by tanya 
physics
A vector moving 45 degrees northeast at a velocity of 3m/s and the turns 30 degrees southeast with a velocity of 10m/s.
asked by Musonda icu 
physics
An ideal gas has the following initial conditions: Vi = 490 cm3, Pi = 5 atm, and Ti = 100°C. What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm3? °C
asked by Katelyn 
tri
A ship leaves port at 5 am and heads due east at 23 knots. At 10 am, to avoid a storm the ship changes course to N 60° E 60° east of north Find the ships distance from port at 4 pm. Round to the nearest tenth.
asked by cha 
English
Oh Lordy, how my heart grows weary, far from the old folks at home.  This is a sentence in the song "Swanee River. Q1: " What is the meaning of "Lordy" here? Is Lordy one of his friends' name? Q2: Who are 'the old folks'?
asked by rfvv 
Math
A TV that usually sells for $172.36 is on sale for 25% off. If sales tax on the TV is 9%, what is the price of the TV, including tax?
asked by Nicole 
math
A piece of land in the shape of a trapezium is drawn on a map using the scale 1:500. The parallel sides are 5 cm and 2 cm, while the perpendicular distance between parallel sides is 4 cm. what is the actual area of the plot in square meter?
asked by kgk 
social studies
how did the siege at the Alamo influence the response of the Texas settlers? it force them to recruit native Americans it forced them to surrender it strengthened their resolve to fight*** it prompted them to have public forums
asked by Maria 
Algebra
7squrare root of 9+5 (83) Please help me figure it out. Thanks
asked by Melissa 
Physics
How much energy must be removed from 30 L of liquid water at 0degree celsius in order to convert it to ice?
asked by khalid 
chemistry
For the equilibrium: H2 + I2 2HI The equilibrium konstant Kc is equal to 50.5 at 448ºC. If [H2]o=[I2] o= 1 mol/l. What will the concentration of H2, I2 and HI be at equilibrium
asked by vicky 
Physics
A sample of ice at 0degree melts after absorbing kJ of heat. How many kg of H20 are contained in the sample?
asked by khalid 
geometry
If m AOB = m COD = 90 ,find m COB + m AOD.
asked by hannah 
Chemistry
To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 18.5 g, and its initial temperature is 13.3 °C. The water resulting from the melted ice reaches the temperature of your skin, 28.4 °C. How much
asked by Annie 
Government
1.) How do US government officials, and then individuals like Edward Snowden and those associated with WikiLeaks view Snowden’s actions differently? Why 2.) How has the U.S relationship with Russia been affected by their decision to grant Snowden asylum,
asked by Donna 
social studies
which statement correctly contrast the Lancaster turnpike with the national road 1. the Lancaster turnpike was a longer road 2. the national road required users to pay a toll to use it 3. the national road was a corduroy road 4. the Lancaster turnpike was
asked by Anon 
Social Studies
2. If you were a colonist, how would you have felt about the Proclamation of 1763? Why?
asked by Subhs 
Physics
An object of mass 1.00kg is moving over a horizontal circular path of radius 2.00m, with a speed of 3.00ms^1. Determine: (a) its centripetal acceleration (b) its kinetic energy (c) its period (d) its angular velocity
asked by Damon 
PHYSICS (REALLY DIFFICULT PLEASE HELP)
An aeroplane makes in emergency landing without landing gear. If the aeroplane touches down with a horizontal speed of 60.0ms^1 and the coefficient of friction for aluminium on asphalt is μ = 0.500, how far will the aeroplane slide before coming to rest?
asked by Steven 
Physics
A flywheel with a moment of inertia of 1.00kg m^2 is rotating at 100 rpm. What torque is required to bring it to rest in 10.0 revolutions?
asked by Tyrese 
math
if i plow at 7km/hr and my plow is 1800mm how long will it take to plow one ha
asked by hennie 
Maths.
3×x^2×y+y^2×5/8×x^2
asked by Lakshika 
Calculus
Find the xyequation of the curve that passes through (2, 2) and whose slope at any point on the curve is equal to 5 times the xcoordinate of that point
asked by James