Questions Asked on
April 14, 2015

dai so
chung minh dang thuc (1+Sin2x)/Cos2x=Tan(pi/4+x)
asked by le 
chemistry
what are the favored geometrical arrangements for ABn molecules for which the A atom has 2, 3, 4, 5 and 6 pairs of electrons in in its valence shell?'
asked by priscilla 
math
You own 6 pairs of jeans and want to take 2 pairs on vacation with you. How many different ways can you take two pairs of jeans? 10 12*** 15 20
asked by Kailli 
chemistry
Write a balanced equation for the reaction between perchloric acid and lithium carbonate.
asked by Samantha 
Chemistry
2H2O(g) 2H2(g) + o2 Calculate delta g and Kp for the following equilibrium reaction. Keep getting 7.2E81 and the answer is 4.5E81 Why?
asked by MAn 
L.A
The word aloof is an English word borrowed from Dutch. It's meaning is "at a distance". In which of the following sentences is the word used correctly? A. Anne's sociable nature made her aloof in new situations. B. When he first arrived at the secrete
asked by Dawn 
Art
Artists make shapes in the background smaller than shapes in the foreground to communicate their distance from the viewer. How else might a landscape artist show shapes in the background to depict their distance from the viewer? A. Show shapes with bright
asked by Dawn 
probability
Let È be the bias of a coin, i.e., the probability of Heads at each toss. We assume that È is uniformly distributed on [0,1]. Let K be the number of Heads in 9 independent tosses. By performing some fancy and very precise measurements on the structure of
asked by alec 
Chemistry
In the Sandwich Shop, select the "Cheese sandwich" option and observe the equation given for the preparation of a cheese sandwich. In the equation, set the number of bread slices to "2" and the number of cheese slices to "1." You will see that the product
asked by Brittany 
Math
1.Which pair of points forms a vertical line segment? a)(3,5) and (5,3) b)(4,2) and (4,3)*** c)(8,1) and (5,1) d)(2,3) and (2,5) 2.What is the length of the line segment between A(10,8) and B(10,3)? a)18 units*** b)5 units c)11 units d)12 units
asked by #HOMEWORK 
chemistry
A chemist dissolves 0.097 g of CuSO4 · 5 H2O in water and dilutes the solution to the mark in a 500mL volumetric flask. A 13.6mL sample of this solution is then transferred to a second 500mL volumetric flask and diluted. What is the molarity of CuSO4
asked by Anonymous 
Math
1.If the coordinates of a point have opposite signs, which quadrants could the point be in? a)Quadrants I and II b)Quadrants I and III*** c)Quadrants II and IV d)Quadrants II and III 2.Which ordered pair would be plotted by starting from the origin and
asked by #HOMEWORK 
math
Connections Academy what is 3! simplified as a 2 b 5 c 3 d 6*** simplify 10p4 a 210 b 360 c 5,040*** d 151,200 simplify 15c3 a 182 b 455*** c 2,730 d 910 my answers 1d 2c 3b
asked by Kailli 
Science
1. A weatherman reports, "the storm waves are about 2 meters high and about 35 meters apart. "what properties of waves is the reporter describing? Frequency and wavelength Wavelength and wave speed***** Amplitude and wavelength Amplitude and frequency 2.
asked by Hailee 
Chemistry
For the neutralization reaction involving HNO3 and Ca(OH)2, how many liters of 1.55 M HNO3 are needed to react with 45.8 mL of a 4.66 M Ca(OH)2 solution? 1. 0.137 L 2. 0.0343 L 3. 0.275 L 4. 1.32 L 5. 0.662 L 6. 0.330 L
asked by Radio Active Wear 
statistics
Suppose that fÈ and fXÈ are described by simple closedform formulas. Suppose that È is onedimensional but X is highdimensional. a) Suppose that a specific value x of the random variable X has been observed. Is it true that the calculation of the LMS
asked by alec 
Reading
1.Which word is most similar to morose? sensitive silly unhappy*** stubborn 2. In which of these lines is the meaning of the word gratitude best expressed? Why its old Fezziwng! Bless his heart; its Fezziwing alive again! The happiness he gave it quite as
asked by Anonymous 
probability
As in the previous exercise, let È be the bias of a coin, i.e., the probability of Heads at each toss. We assume that È is uniformly distributed on [0,1]. Let K be the number of Heads in 9 independent tosses. We have seen that the LMS estimate of K is
asked by alec 
marketing
You have been hired as a marketing consultant to Johannesburg Burger Supply, Inc., and you wish to come up with a unit price for its hamburgers in order to maximize its weekly revenue. To make life as simple as possible, you assume that the demand equation
asked by leslee 
Calculus
We can find some of the solutions of sin x = 0.2 graphically by graphing y = sin x and y = 0.2 (I was able to figure this one out) Use the graph below to estimate some of the solutions. (Let −3π < x < 3π.) Enter your answers as a commaseparated list.
asked by Angela 
statistics
EXERCISE: POSSIBLE VALUES OF THE ESTIMATES Suppose that the random variable È takes values in the interval [0,1]. a) Is it true that the LMS estimator is guaranteed to take values only in the interval [0,1]? b) Is it true that the LLMS estimator is
asked by alec 
calculus multiple choice
1.The region in the first quadrant bounded by the xaxis, the line x = ln(π), and the curve y = sin(e^x) is rotated about the xaxis. What is the volume of the generated solid? a: 0.906 b:0.795 c:2.846 d: 2.498 2.Find the average value of f(x)=2/x over
asked by Anonymous 
Math
Triangle S(6,10)T(9,3)U(3,3) is translated right 2 units and 3 units down. What are the coordinates of the vertices of the image? s'(9,12), t'(12,5), u'(6,5) s'(4,7), t'(7,0), u'(1,0) s'(8,13), t'(11,6), u'(5,6) s'(4,10), t'(7,32), u'(1,3)
asked by Lost 
Chemistry
It has been determined that the body can generate 5500 kJ of energy during one hour of strenuous exercise. Perspiration is the body's mechanism for eliminating this heat. How many liters of water would have to be evaporated through perspiration to rid the
asked by Jamie lee 
socialstudies
1.Explain two types of divisions that existed in Europe during the Cold War. 2.How did the Columbian Exchange encourage the growth of European colonies?
asked by #HOMEWORK 
math
Which number is not equal to one of the following expressions? 0.6038 x 1000 603.8 : 10 60.38 : 100 0.6038 603.8 60.38 6.038
asked by Anonymous 
Chemistry
Determine the hydronium ion concentration in a solution that is 0.00027 M HCl. Answer in units of M. Determine the hydroxide ion concentration in a solution that is 0.00027 M HCl. Answer in units of M. This is a two part question and I have tried multiple
asked by Radio Active Wear 
Math
1. Simplify 6p2 a. 30*** b. 15 c. 12 d. 720 a. is my answer. is this correct?
asked by Check my answer? 
6th Grade Math Help & FAST!!!
I only have 2 questions. 1 is multiple choice and one I have to type so please help. 1. Which set of output values correctly completes the function table? This is the function table: y= 2x  4. Input (x) 6, 2, 4. Output (y) those three slots all have
asked by MusicLover14 
Chemistry
Balance the given chemical equation using wholenumber coefficients. ?D2(g)+?O2(g)→?D2O(l) Enter the coefficients in order separated by commas (e.g., 1,3,2, where 1 indicates the lack of a coefficient).
asked by Brittany 
Chemistry
The density of whole blood is 1.05g/mL. A typical adult has about 5.5L of whole blood. What is the mass in pounds of this amount of whole blood?
asked by Anonymous 
speech
traditional african mariage is an advantage for men only,not women?
asked by ellen 
Chemistry
A solid weak acid is weighed, dissolved in water and diluted to exactly 50.00 ml. 25.00 ml of the solution is taken out and is titrated to a neutral endpoint with 0.10 M NaOH. The titrated portion is then mixed with the remaining untitrated portion and the
asked by JUNDY 
math
Neil needs to cut 3 long boards into 9 smaller boards. The first is 10 ft, the second is 16 ft, and the third is 18 ft. The table lists the smaller boards Neil needs. Use a drawing to show how he can divide the 3 boards so there is no waste. Length of
asked by Mimi 
math
Marteen wants to paint 2/3 of her room today.She wants to paint 1/4 of that before lunch.How much of her room will she paint before lunch today? A.1/12 B.1/6 C.5/12 D.11/12
asked by Beth 
Chemistry
If 74.5% of exhaled air is nitrogen, what is the partial pressure of nitrogen in exhaled air. Assume that the total pressure of exhaled air is 760 mmhg.
asked by JD 
chemistry
carbon dioxide (CO2) gas is produced as a result of the reaction between calcium carbonate and hydrochloric acid. The gas that is produced is collected in a 20 dm3 container. The pressure of the gas is 105 kPa at a temperature of 20 C. What mass of carbon
asked by carmen 
Physics
An antiaircraft gun fires at an elevation of 60° at an enemy aircraft at 10,000m above the ground. At what speed must the cannon be shot to hit the plane at that height.
asked by Olushola 
math
Jerry is packing cylindrical cans with diameter 6 in. and height 10 in. tightly into a box that measures 3 ft by 2 ft by 1 ft. All rows must contain the same number of cans. The cans can touch each other. He then fills all the empty space in the box with
asked by Ray 
Chemistry
Consider the reaction 2D2(g)+O2(g)→2D2O(l) What is the mass of heavy water, D2O(l), produced when 7.65g of O2(g) reacts with excess D2(g)? Express your answer with the appropriate units.
asked by Brittany 
Chemistry
What mass of water is produced from the complete combustion of 2.10×10−3g of methane? Express your answer with the appropriate units.
asked by Brittany 
MATH WORD PROBLEM HELP PLEASE
A water tank is in the shape of a right circular cylinder with a height of 20 feet and a volume of 320pi cubic feet. What is the diameter, in feet, of the water tank?
asked by Anonymous 
socialstudies
1.Explain two types of divisions that existed in Europe during the Cold War. 2.How did the Columbian Exchange encourage the growth of European colonies?
asked by #HOMEWORK 
Math
The population of a small Midwestern town is 4500 The population is decreasing at a rate of 1.5% per year. Write an exponential decay function to model this situation. Then find the number of people in the town after 25 years.
asked by M 
SCIENTIFIC NOTATION
A lab has two bacteria cultures. Culture A contains 8*10^4 bacteria and culture B contains 4*10^6 bacteria. How do the two cultures compare in size? A. Culture A contains twice as many bacteria as Culture B B. Culture A contains 1/2 as many bacteria as
asked by Anonymous 
chemistry
Write a molecular equation for the gasevolution reaction that occurs when you mix aqueous hydrobromic acid and aqueous potassium sulfide.
asked by Samantha 
Math
You order sixteen burritos to go from a Mexican restaurant: seven with hot peppers and nine without. However, the restaurant forgot to label them. If you pick four burritos at random, find the probability that at least two of the burritos you pick have hot
asked by 0zz 
English
HELP! John or Doris (write, Writes) to us regularly. Either Carol or Ted (was, Were) asked to lead the meeting. Either Marie or you (was, were) late for class. Either you or Marie (was, were) late for class. Everybody in the class (has, have) a ticket. We
asked by Island Grandma 
ELA Verbals
After some light stretching, Julia decided to run around the park for her warmup. What is the infinitive in the sentence above? a. to run b. after some c.for her warmup d. around the park i wanna say its a
asked by basketball&batman 
Art
Public spaces such as playgrounds or skate parks often serve the purpose of meeting which significant human needs? A. Needs for conflict and stress. B. Needs for solitude and meditation. C. Needs for creativity and art creations. D. Needs for recreation
asked by Dawn 
Chemistry
Find the number of moles of water that can be formed if you have 226mol of hydrogen gas and 108mol of oxygen gas. Express your answer with the appropriate units.
asked by Brittany 
Physics
4 charges Q1=2C, Q2=3C, Q3=3C & Q4=4C are placed at the vertices of a square of side 10cm. find the force on 5th charge Q5=1C placed at the center of square.
asked by Anonymous 
math
You order sixteen burritos to go from a Mexican restaurant: seven with hot peppers and nine without. However, the restaurant forgot to label them. If you pick four burritos at random, find the probability that at least two of the burritos you pick have hot
asked by 0zz 
Writing Skills
The call number given in a catalog entry gives us what information? A. How recently the item was published B. The title and author of the item in question C. Where the item can be found within the library D. Whether or not the item is checked out I think
asked by TYondra 
Chemistry
How many grams of NaF are needed to make 50 mL of a 2% aqueous solution?
asked by Angel Hernandez 
Art
The gold trim, rich colors, a plentiful lace on eighteenthcentury European fashions communicated which value of Baroque culture? A. Simplicity B. Balance C. Extravagance D. Creativity Is the answer C? Thank you
asked by Summer 
Chemistry
I am working on a fivepart question and I just need help with the last part. I'm not sure where to begin with that one. I pasted the question and answers (for ad) to the other parts below. Thank you! Consider the proposed mechanism for the reaction
asked by Lisa 
Pre  CALCULUS
Graph the function. Then use your graph to find the indicated limit. You do not have to provide the graph f(x) = 5x  3,lim x >5 f(x)
asked by Ciara 
Chemistry
What is the maximum mass of S8 that can be produced by combining 85.0 g of each reactant? 8SO2 + 16H2S yields 3S8 +16H2O
asked by Tim 
calc
A boat leaves a dock at 3:00 PM and travels due south at a speed of 20 km/h. Another boat has been heading due east at 15 km/h and reaches the same dock at 4:00 PM. How many minutes after 3:00 PM were the two boats closest together? (Round your answer to
asked by sara 
PRE  CALCULUS
Graph the function. Then use your graph to find the indicated limit. You do not have to provide the graph f(x) = 5x  3,lim x >5 f(x)
asked by Ciara 
quantitative techniques
a manufacturer of a cotter pins know that 5% of his product is defective if he sells cotter pins in boxes of 100 pins and guarantee that no more than 10 pins will be defective find the probability that a box will fail to meet the guaranteed quality
asked by saloni garg 
Chemistry: Potentiometric Anyalysis
If the pH probe was miscalibrated and reports the pH to be 1 unit higher than the true pH of the solution it is in, would the molar mass you report for the solid acid be higher, lower, or equal to the true molar mass of the acid? This for my post lab write
asked by Michelle 
Physics
A train accelerates from the rest at the station A at a rate of 0.8 m/s2 for 25 s, the travels at constant velocity for 77.5 s before it comes to rest at the station B after period of retardation lasting 20 s. What is the distance between stations A and B,
asked by Albert 
Art
A cityscape artist complete a portrait of a busy, grimy, dirty city with no signs of nature. Which of the following might be be suggesting humanities relationship with the surrounding world? A. Cities encourage productivity and life. B. Cities encourage
asked by Dawn 
electromagnetism
Two identical bar magnets A and B are held at rest as shown and released to fall simultaneously. Magnet A as it falls passes through the center of a copper ring, magnet B does not. #9 (4 points possible) Which of the following statements is true? 
asked by JuanPro 
programming
Design a program that calculates and displays the amount of money you would have if you invest $5000.00 at 2 percent simple interest for one year. call a function and pass the needed data to do the calculation and return the result
asked by Elsa 
Math
Farmer John (not the bacon guy) raises ducks and cows. He has 54 animals which all together have 122 feet. How many of each type of animals does Farmer John have?
asked by Erika G. 
Algebra
Find an angle with a positive measure and an angle negative measure that are coterminal with each angle. 1. 370 degrees 2. 3π /4 3. 5 π/2 pi sign = π
asked by Ann 
physics
a body of mass 25kg,moving at 3m/s on a rough horizontal floor is brought to rest after sliding through a distance of 2.5m on the floor. calculate the coefficient of sliding friction [g=10ms2]
asked by Jephthah 
Art
In an effort to help a student understand the concept of shading, which teaching strategy could an educator use to help someone who learns best through handson activities? A. Explain shading techniques out loud. B. Write shading techniques on the board.
asked by Summer 
Art
The placements of rocks in a Japanese garden is an example of which artistic principal that communicates the cultural value of embracing a lack of equality? A. Asymmetry B. Balance C. Symmetry D. Transformation Is the answer B? Thank you
asked by Summer 
maths
what is the difference in the place values of 7,s in 76427?
asked by shehzad 
english
Compare Psalm 23 and The Sermon on the Mount
asked by Ciara 
Chemistry
What is the maximum mass of H2O that can be produced by combining 84.4 g of each reactant? 4NH3 (g) + 5O2 (g) > 4NO (g) + 6H2O (g) ___________ g H2O ?
asked by Spencer 
Maths!!
The law connecting friction F and load L for an experiment is of the form F =aL+b, where a and b are constants. When F =5.6, L=8.0 and when F =4.4, L=2.0. Find the values of "a" and "b "and the value of F when L=6.5.
asked by Baz 
Chemistry
To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 2.7L bulb, then filled it with the gas at 1.30atm and 30.0 ∘C and weighed it again. The difference in mass was 3.9g . Identify the gas.
asked by Anonymous 
Art
In addition to skills in creating art, which type of knowledge is important for art therapists to have to successfully perform their jobs? A. knowledge of physical therapy. B. Knowledge of psychology. C. Knowledge of teaching strategies. D. Knowledge of
asked by Summer 
ART PLS HELP
what id an example of bias in media A) a website that represents a controversial opinion as if it were fact***** B) A television news program that presents both sides of a particular issue C) A podcast expressing an authors opinion D) A blog about the
asked by Anonymous 
Chemistry
What is the maximum mass of H2O that can be produced by combining 71.7 g of each reactant? 4NH3 (g) + 5O2 (g) > 4NO (g) + 6H2O (g) ___________ g H2O ?
asked by Tim 
Chemistry
What mass of carbon dioxide is produced from the complete combustion of 2.10×10−3g of methane? Express your answer with the appropriate units.
asked by Brittany 
life oriantation
To what extent can intrapersonal conflict affect job perfomance ehen employed
asked by queen 
Physics
A cannon ball is projected so as to attain maximum range. Find the maximum height attained if the initial velocity is u
asked by Olushola 
PreCalculus (Check)
Please tell me what I'm doing wrong... The side lengths of tops of three squares tables can be described as three consecutive integers. The combined area of the table tops is 677 sq in. Algebraically, determine the roots of the quadratic equation. (I'll
asked by Lucina 
Science
The assertion that 1g of uranium can produce energy equivalent to 10kg of coal implies that
asked by Olushola 
MATH
whats the answer to this? write an equation fr an arithmetic sequence with a 1st term of 8 and 4th term of 7. im stuck.
asked by Samanta 
math analysis
Two airplanes leave an airport at the same time. one travels in the direction of 38 degrees at 140mph and the other travels in the direction of 350 degrees at 180mph. After two hours, how far apart are they? Thanks
asked by jenas 
Chemistry
What volume will 3.5g of CO occupy at 17 degrees Celsius and 1875 torr?
asked by JD 
History
Places during the Early Republic
asked by M 
calc
The base of a triangle is shrinking at a rate or 2 cm/s while the height is growing at a rate of 3 cm/s. How quickly is the area of the triangle changing when the base is 10 cm and the height is 6 cm?
asked by Anonymous 
Science
The most covalent of the chlorides; LiCL,BeCL2,MgCL2 and AlCL3 is (a)MgCL2 (b)AlCL3 (c)Licl (d)BeCL2
asked by Olushola 
Social Studies
Thank you very much for your help, i am in a rush but i will be patient. * marks my answer. 1. What was the effect of World War I on South Carolina? A. The state economy shrunk significantly. B. Citizens used more resources, such as meat and fuel, than
asked by basketball&batman 
Physics
In exercising, a weight lifter loses 0.236 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. The work done in lifting weights is 1.41 x 105 J. (a) Assuming that the latent heat of vaporization
asked by Check please 
Chemistry
1.How many grams of KCl is in 225 mL of a 0.452 M solution? 2.What volume in mL of 0.555 M solution contains 85.0g Na2SO4? 3.How many grams of CaCl2 would be dissolved in 2.0L of a 0.10 M solution of CaCl2? Can you please show me how to do these problems?
asked by Jamie 
Chemistry
What mass of oxygen is needed for the complete combustion of 2.10×10−3g of methane? Express your answer with the appropriate units.
asked by Brittany 
calculus
3:For an object whose velocity in ft/sec is given by v(t) = −2t^2 + 4, what is its distance travelled, in feet, on the interval t = 0 to t = 2 secs? a:4.876 b:2.667 c:9.752 d:2.438
asked by Anonymous 
Math
Neil needs to cut 3 long boards into 9 smaller boards. The first is 10 ft, the second is 16 ft, and third is 18 ft. The table lists the smaller boards Neil needs. Use a drawing to show how he can divide the 3 boards so there is no waste.
asked by Mimi 
Fourier Series
Compute the Fourier series of f(x)=x+x,π≤x≤π
asked by ijat 
Physics
The density of a solid is 130gcm^3 at the temperature of 25 degree Centrigate.Find the Density at 150 degree Celcius if the linear expansion of the solid is 2.0*10^(5)K^1. I got the answer to be 129.03.
asked by Sirneij 
chemistry
One mole of an ideal gas is expanded from a volume of 1.00 atm. How much work (in joules) is performed on the surroundings? Ignore sig figs for this problem. (T=300 K; 1 L*atm=101.3 J)
asked by Carolyn 
electromagnetism
Consider a coaxial cable with a central conducting wire (r=1mm) surrounded by an outer coaxial conducting sheath (rinner=3mm,router=3.2mm) as shown. A current i=300mA flows down the center wire (into the page) and back through the conducting sheath (out of
asked by JuanPro 
calc
Find the maximum possible area of a rectangle in quadrant 1 under the curve y=(x4)^2 (with one corner at the origin and one corner on the curve y=(x4)^2)
asked by Anonymous 
Physic
Calculate the total mass of 1.6x10^11 atoms of Na22 isotope (given 1 mol of Na22=22g)
asked by Aboi 
English
What can we do to save water? 1.We can use our cups when we brush our teeth. 2. We can put a brick into the toilet. 3. We can use a waterbowl when we wash the dishes. 4. We can get rid of the old before we wash the dishes. 5. We can reuse the water after
asked by rfvv 
physics
An ideal gas at 19.8 °C and a pressure of 2.79 x 105 Pa occupies a volume of 3.66 m3. (a) How many moles of gas are present? (b) If the volume is raised to 7.20 m3 and the temperature raised to 28.5 °C, what will be the pressure of the gas? I got a)
asked by P H Y S I C S 
SCIENTIFIC NOTATION
which expression is not equal to 6^3/6^6? A 1/6^2 B 6^3 C 1/216 D 1/6^3
asked by Anonymous 
Physic
A radioactive element x has half life of 30 days and will decay to become another new element Y.. a) calculate decay constant b) how long it will take for 90% of the no.Of atom in radioisotope x to decay?
asked by Aboi 
English
1. What do we have to do in case of a fire? 2. What do we have to do when a fire breaks out? 3. What do we have to do when your apartment is on fire? 4. Call 119. 5. Tell grownups. 6. Tell adults. 7. Use the fire extinguisher. 8. Go outside and use the
asked by rfvv 
English
1. We can reuse the water after we rinse the rice. 2. We can reuse the water after we rinse rice. (Do we have to sue 'the' before 'rice'?) 3. We can do the laundry after we gathering many clothes. 4. We can put many clothes in the washing machine. 5. We
asked by rfvv 
electromagnetism
Consider a coaxial cable with a central conducting wire (r=1mm) surrounded by an outer coaxial conducting sheath (rinner=3mm,router=3.2mm) as shown. A current i=300mA flows down the center wire (into the page) and back through the conducting sheath (out of
asked by JuanPro 
chemistry
d(g)>3/2 e(g)+5/2 f(g) when e increases by .25 mol/l*s how fast is f increasing
asked by kim 
calc rates
the radius, r, of a circle is growing at a rate of 3 cm/s. Find the rate of change of the area of the circle when the radius is 5 cm
asked by Anonymous 
physics
A particle starts moving from rest with uniform acceleration.It travels a distance x in first 2 sec and a distance y in the next 2 sec.Then Answer) y=3x
asked by AVINAV KUMAR CHOURASIA 
Chemistry
when titrating 50 mL of .10M H2SO45 with .10 M NaOH, how many mL of NaOH will you have added to reach first equivalence point?
asked by Kay 
physics
A machine with an efficiency of 100% is said to be efficient. a) If a lever has a distance of 4m from the pivot to where a load of 500N is applied and a distance of 1m from the pivot to where the load is,calculate the efficiency of the lever when height
asked by alexander 
Social Studies
What role did the Freedmen's Bureau play in Reconstruction? a. African Americans b. Schools and medical services.
asked by I<3Pewdiepie 
electromagnetism
An infinitely long wire carries a current I=100A. Below the wire a rod of length L=10cm is forced to move at a constant speed v=5m/s along horizontal conducting rails. The rod and rails form a conducting loop. The rod has resistance of R=0.4Ω. The rails
asked by JuanPro 
mathematics
Factorise 4ab²+8ab16a²b
asked by Anonymous 
Math
The figure below represents a garden in which a flower bed ( inner rectangle) is to be installed. The garden ( excluding the flower bed) is to be sodded. The outer is 9' ft width and 15' ft long and the inner is 3'ft wide and 7'ft long. A) Find the area of
asked by Jen 
physics
A ball is thrown vertically upward from the edge of a cliff of height 131 m. The initial velocity is 77.7 m/s. how high is the cliff?
asked by Holly 
electromagnetism
A series RLC circuit is connected to a a DC battery via a switch. #11A (3 points possible) A long time after the switch is closed, what is the current in the circuit? A long time after the switch is closed, what is the current in the circuit?  unanswered
asked by JuanPro 
Chemistry
How many grams of H2 are needed to produce 11.80g of NH3? Express your answer numerically in grams.
asked by Brittany 
Chemistry
How many molecules (not moles) of NH3 are produced from 1.17×10−4g of H2? Express your answer numerically as the number of molecules.
asked by Brittany 
Physic
A radioactive element x has half life of 30 days and will decay to become another new element Y.. a) calculate decay constant b) how long it will take for 90% of the no.Of atom in radioisotope x to decay?
asked by Aboi 
geometry
Steve pored six 2 liter bottles of apple juice into an empty rectangular drink dispenser measuring 40 centimeters long and 20 centimeters wide. Calculate the interior area of the dispenser that is in contact with the apple juice. 1 L is 1000cm3
asked by karocks 
Maths
Please help... The ratio of the number of boys to that of girls in Class A is 2 : 3. The ratio of the number of girls who wear glasses to the number of girls who do not wear glassesis 1:3. If there are 12 more girls than boys, how many girls wear glasses?
asked by JJJ.Sara 
Chemistry
Calculate delta g and Kp for the following equilibrium reaction. Keep getting 7.2E81 and the answer is 4.5E81 Why?
asked by C 
Philosophy
What role does morality play in a good human life? Can a person live a life of wickedness and immorality and still live a good human life?
asked by TayB 
Science
In the uranium mass 235,the binding energy was estimated as 3.0×10^11Joules.Determine the energy released by 1g of uranium.
asked by Olushola 
Chemistry
An aqueous solution of a monoprotic acid is prepared. This acid is known to have a pKa of 8.6. If the acid is 37.5% ionized when in solution, what is the pH of the solution? Not really sure where to start with this question? Thanks in advance
asked by Jessica 
Physics
The angle of a rotating shaft turns in t seconds is given by theta= ω+1/2at^2 and it is given that ω=3 rad/s and α=0.6 rad/s to complete θ=4 radians. Determine the time taken to complete θ=4 radians.
asked by Baz 
Mathematics
Factorise 4m²9m²
asked by Anonymous 
Health
________ dependence is the most common form of chemical dependence in the United States. A. Alcohol B. Tobacco C. Nicotine D. Marijuana I think its C.
asked by Vaughn 
English
I'll bet you can't guess my favorite musical instrument challenged my dentist
asked by Lucas 
grammar
would social studies be capitalized in this sentence: I don't understand how he did the social studies problem.
asked by Christian 
Chemistry
The electrophoresis of a mixture of histidine (His), aspartic acid (Asp) and phenylalanine (Phe) is carried out at a pH of 5.91. Match the amino acid to its predicted behaviour under electrophoresis at that pH. 1. This amino acid will bear no net charge at
asked by Jessica 
Math
Write a compount interest function to model each situation. Then find the balance after the given number of years $27,000 invested at a rate of 3.75% compounded quarterly; 3 years
asked by M 
Physics
A stone is thrown vertically upward with an initial speed u.if is the acceleration due to gravity,at what time will the stone return to the starting point
asked by Olushola 
Math
Is 12% greater than or less than 100%?Explain.
asked by Malik 
physics
A 10kilow walts electric motor is used to raise a 400kg load of bricks to a height of 60meters.The efficiency of the motor 80%.what is the input energy?
asked by alexander 
geometry
Draw an equilateral triangle ABC with side length 4cm to scale and then draw dotted lines to show all axes of symmetry of this triangle
asked by Nelly 
electromagnetism
A rectangular wire loop with current i=200mA, width W=20cm and length L=50cm is placed in a uniform magnetic field B=7T as shown. The normal to the loop, represented by the dashed line, is θ=20degrees from the magnetic field direction. #3A (6 points
asked by JuanPro 
Reading/Writing
Having to do a Research Report: Theme: animal adaptations.I have no clue where or how to start. Need a bibliography. What?
asked by Sebastian 
Chemistry
The heat of fusion of a metal is 5.53 J/g at its freezing (melting) point of 559◦F. How much of this solid metal (already at 559◦F) can be melted if 3382 J of energy are available? Answer in units of g. I don't know how to set up the problem
asked by Emma 
Science
The mass defect in a certain nuclear reaction is 0.108a.m.u.Determine the energy released in the reaction
asked by Olushola 
math
Numbers that are palindromes read the same forward and backward. For example, 30203 is a five digit palindrome. If a single number is chosen randomly from the set of all threedigit numbers, find the probability that it will be palindromic. Answer 1/10??
asked by timmy 
English
Imagine what will happen in the future world and write down sentences related to the future world. 1. We will go to Mars. 2. We will make robots clean the house. 3. We will not get sick. 4. We will fly in the air. 5. We will go to the USA in 10 minutes
asked by rfvv 
Maths
A manufacture finds the total cost "C" for a product is expressed by C=3x28, and the total revenue "R" by R=3x2, where x is the number of units sold. What is the breakeven point (where total cost=total revenue) to the nearest unit?
asked by Maths urgent! 
English
1. We can live to be 200. 2. We can live to be 200 years old. 3. We can live up to 200. 4. We can live up to 200 years. 5. We can live to 200. 6. We can live to 200 years. 7. We can live up to 200 years old. 8. We can live to 200 years old.
asked by rfvv 
electromagnetism
the middle wire carries 2A, and the bottom wire carries 3A. 2A (6 points possible) What is the magnitude of the force per unit length on the TOP wire in N/m? 1000  incorrect 1000 What is the direction of the force on the TOP wire? left right up up 
asked by JuanPro 
electromagnetism
Three long, thin, coplanar wires are separated by 10cm and arranged as shown. The top wire carries 1A, the middle wire carries 2A, and the bottom wire carries 3A. 2A (6 points possible) What is the magnitude of the force per unit length on the TOP wire in
asked by JuanPro 
Physics
The density of a solid is 130gcm^3 at the temperature of 25 degree Centrigate.Find the Density at 150 degree Celcius if the linear expansion of the solid is 2.0*10^(5)K^1. I got the answer to be 129.03.
asked by Sirneij 
Technical Physics
A boat is sitting in the middle of the lake. What happens to the water level in the lake when a heavy anchor is thrown overboard? Does the water level rise, lower, or stay the same.
asked by Anonymous 
PHYsics
A centrifuge for separation of sugar crystals in molasses must exert a force of 6 N/g. If the filter drum has a radius of 350 mm, determine the required speed in the revolution per minute I tried the following F = 6 = 10^3*a a = 6000 = ω^2*r
asked by David 
History
People who were in the Early Republic and places during that time
asked by M 
health
what is atmospheric pressure? Is it d?
asked by Cheyenne 
physics
Choose one of the Laws of Thermodynamics (zeroth, first, second, or third) and give a brief summary of its development. Who is credited with "discovering" it and when? How did the four laws come to be ordered as they are? Please explain in detail
asked by liz 
Science
What is the momentum of a 2 kg rock moving at 3m/s?
asked by Jon 
geometry
I need help with following problem. I have (2lines (AB and CD). A line intercepts which I called AE. (
asked by chloe 
Social Studies
How did the wartime economies of the North and South compare? a. Goods and resources of the North b. Goods and resources of the South (the a and b are not answer choices I have to answer those in my answer for the main question)
asked by I<3Pewdiepie 
Maths
Two flares are launched from a life raft. The height h of the first flare in metres above the sea is modelled by the formula h1= t2+t+1meters,and the second flare is h2=4t where t is the time 12 in seconds after the flare is launched. Determine (i) Time
asked by Baz 
Math
Perform the following calculations 7 yds , 1ft 3 yds, 2 ft= what in ft Thanks
asked by Michelle 
electromagnetism
A rectangular wire loop has a R=10Ω resistor on the back as it moves into a region of uniform B=3T field at v=10m/s. The rectangle is w=5cm wide by l=20cm long. #7A (2 points possible) As the loop enters the field, which way will the induced current flow?
asked by JuanPro 
math
Jeff is replacing the tile on his floor. he pans to use square tiles that are 11 inches on a side. the floor is 8 feet long and 6 feet wide. cabinet in the middle of the floor that will not need tile. this space is 2 feet wide and 3 feet long. estimate how
asked by Marty 
Denotations and Connotations
Check the denotations of each of the following pairs of words. Then, explain the difference in connotations in each pair. 1. Statesman, politician 2. clever, intelligent 3. staring, studying 4. naive, ignorant
asked by Victoria 
Science
The hydride of group VIA element are Option (a)volatile covalent gases (b)volatile covalent solids (c)volatile covalent liquids (d)volatile ionic liquids
asked by Olushola 
Math
6.A rectangle has a coordinate at (3,5),(3,8) and (9,5).Plot the points to determine the coordinate of the fourth point. a)(3,5) b)(9,8) c)(8,9) d)(9,8)*** 9.What is the length of the line segment between M(2,9) and N(2,14)? a)5 units*** b)6 units c)15
asked by #HOMEWORK 
Science
Element Y has a half life of 50days. How much of a 100mg of its sample will remain after 5 month?
asked by Olushola 
Science
The energy of transition of an electron from 5th to the 3rd Bohr orbit of a hydrogen atom
asked by Olushola 
English
1. We can take showers. 2. We can take a shower. 3. We can take cold showers. 4. We can take a cold shower. 5. We can take longer showers. 6. We can take a long shower. ================= What is the difference between each pair? Which one is commonly used?
asked by rfvv 
English
1. We can turn off the tap of water, when we are washing our faces. 2. We can turn off the tap water, when we are washing our faces. 3. We can turn off the city water, when we are washing our faces. =================== Q1: Can we use all the expressions?
asked by rfvv 
Math
Some number multiplied by 6 is 36. Multiply this number by 8. Divide the answer by 2. What is the final number?
asked by Anonymus 
math
Consider the equation y^212y=c, where c is a real constant. Assuming this equation has two distinct solutions y_1 and y_2, in terms of c, determine y_1y_2. i tried 12 and 0 they were both wrong,i have no idea what else to try
asked by Gem 
math
A rectangular pool measures 20ft by 30ft. It is bordered by a tiled walkway that is 7 ft wide. What is the area of the walkway?
asked by tajha 
global history
to what extent are studies in the arts important to the success of a renaissance man?
asked by danielle 
math
find the first 3 term s of an arithmetic sequence in which the 21 term is 54 and the fifteenth term is 170
asked by Anonymous 
Reading/Writing
Have to do Research Report, theme: animal adaptations. I have no clue where to start.Asking for Bibliography? What?
asked by Sebastian 
Geometry
Need help, not sure what I am suppose to do. Estimate the area between the graph of 4y = 16  x^2 and the xaxis. The picture of a mound is on a piece of graph paper. Points A(4,0) B(0,4)(4,0) Point B is the top of mound.
asked by Jane 
chemistry
What is the final volume if 125 mL of a stock solution of nitric acid at 10.30 M is diluted to 0.500 M?
asked by Anonymous 
Science
Which of these is not associated with camp ton effect? (a)when energy exceeds 1.02MeV. (b)energy of gammaray become less. (c)operative within the range of 0.6Mev and 4MeV of energy. (d)it doesn't result in low energy secondary radiation.
asked by Olushola 
math
Determine the number of odd, nonrepeating three digits numbers that can be written using digits from the set {1, 2, 3, 4}.
asked by timmy 
Science
Describe the difference between the momentum between a tennis ball and a wrecking ball that is thrown at the same speed.
asked by Jon 
math
20 percent of what number is 18
asked by Anonymous 
Sociology
Im looking for some media examples of how women who don't want kids are perceived by society... one example I have is How I Met Your Mother, where one of the main characters Robin doesn't want kids..... Can anyone think of any other examples? Thanks!
asked by Bri 
6th grade math
Chris has made the following grades on five math test. 90,74,86,75,94 What score must Chris earn on the next math test to have a test average of exactly 85?
asked by Alex 
Science
Draw the positiontime graph of a stationary body also draw velocity time graph of a stationary body
asked by Rihana 
Math
6.A rectangle has a coordinate at (3,5),(3,8) and (9,5).Plot the points to determine the coordinate of the fourth point. a)(3,5) b)(9,8) c)(8,9) d)(9,8)*** 9.What is the length of the line segment between M(2,9) and N(2,14)? a)5 units*** b)6 units c)15
asked by #HOMEWORK 
Chemistry
The electrophoresis of a mixture of histidine (His), aspartic acid (Asp) and phenylalanine (Phe) is carried out a pH of 5.91. What amino acid will This bear no net charge at pH 5.91 and so will remain at the origin, carry a net negative charge at pH 5.91
asked by Jessica 
physics
A centrifuge for separation of sugar crystals in molasses must exert a force of 6 N/g. If the filter drum has a radius of 350 mm, determine the required speed in the revolution per minute I tried the following F = 6 = 10^3*a a = 6000 = ω^2*r
asked by Paul 
math
A5digit number has 7 in its place The digit in once place is 5 less than its digits at tens place The hundreds place digit is 4 times the digit at once place The digit at thousands place is the same as at hundreds place sum of all the digits is 33 write
asked by ayesha 
maths
Factories 4m²9k²
asked by Babra 
electromagnetism
A series RLC circuit is made with a C=100pF capacitor, an L=100μH inductor, and an R=30Ω resistor. The circuit is driven at 5×106rad/s with a 1V amplitude. #12A (4 points possible) What is the current oscillation amplitude in A? What is the current
asked by JuanPro 
1 st grade
why does little red riding hood go for a walk in the woods?
asked by jessica 
Science
The equation of the reaction between 2 moles of proton and 2 moles of neutron producing Helium particles is a practical suggestion of (a)existence of neutral particle. (b)alphaparticles has no relationship with nucleus (c)electron is not part of helium.
asked by Olushola 
Child Development
What must teachers consider when striving to support children’s experience and sense of self in the early childhood classroom?
asked by SANDRA 
Science
Which of the following characteristics xray photon emission? (a)electron capture (b)betadecay (c)positron emmision (d)gammadecay
asked by Olushola 
economic environment
Discuss the variables which included the external environment
asked by mpho 
physics
a particle covers 1/2 distance between A and B with a velocity V0. during 1/2 of the time required to cover the remaining distance the particle moves with a velocity V1 and rest moves with a velocity V2. find the average velocity of the particle
asked by anubhab 
workplace setup
setting up medical office with 3 physicians, 6 adm. personnel and 4 clinical assistants plus 1 office manager. How can I set up a complete computer equipments with all equipment needed to run the office
asked by Anonymous 
Math
Some number added to 12 is 45. Add this number to 30. Multiply the answer by 3. What is the final number?
asked by Sara 
math
Methylpresnisolone (Solumedrol) is a glucocorticoid ordered for endstage respiratory disease. You need to administer 125 mg IVP. It is available as 75 mg/mL. How many mL will you administer? Round to the nearest 10th mL. Write the NUMBER ONLY in the
asked by Clare 
physics
How long would it take to bring a 318 kg car moving at 11.2 m/s to a complete stop if a 602.8 N breaking force is applied?
asked by Anonymous 
PHYSICS1
Calculate the range (using g=9.8m/s) and the height of the pumpkin using the initial speed ( 18m/s), halftime (1.7) and angle (75).
asked by Anonymous 
math
Given these probabilities: pr(rain) = .2 pr(snow)=.1 pr(cloudy)=.5 and pr(sun)=.2 pr(crashrain or snow) = .2 pr(crashcloudy or sun) = .05 what is the probability of a car crash?
asked by Anonymous 
math
why shud math be included in alll the streams
asked by Anonymous 
maths
Express the following as a aproduct of three factors. a)20
asked by priyanka singh 
Science
Evaluate the value of the Bohr orbit in a hydrogen atom whose principal quantum number is 1.
asked by Olushola 
6th grade math
While battling a forest fire , Samuel was only able to get three hours of sleep during the first day. What was the percent of the day was Sam awake F. 87.5% G. 37.5% H. 90% J. 10%
asked by Alex 
Science
The electron in a helium ion moves from a Bohr's orbit whose principal quantum number is 4 to another whose quantum number is 6.calculate the energy of transition in this process.
asked by Olushola 
Math
Suppose the speedometer of your car reads 90 km/ hr. If you are driving in the united states where the maximum speed is posted as 50 mi/ hr By how much are you exceeding the speed limit.
asked by Jen 
physics
A centrifuge for separation of sugar crystals in molasses must exert a force of 6 N/g. If the filter drum has a radius of 350 mm, determine the required speed in the revolution per minute I tried the following F = 6 = 10^3*a a = 6000 = ω^2*r
asked by Paul 
Physic
A newly prepared radioisotope has activity 3.7x10^11 Bq. After 4 hours, its activity is reduced to 2.96x10^11.calculate a) decay constant b) its half life
asked by Aboi 
English
1. We can use less water when we do the dishes. 2. We can use less water when we are doing the dishes. 3. We can use only a little water when we wash a car. 4. We can use only a little water when we are washing a car. ===================== Are they all
asked by rfvv 
math
three triangles inscribed in a square. All tangents. What is the radius?
asked by Cindy 
Math
How would you fine the relative extrema of f(x)=x+8^x ? I know the first step is to find the derivative, which when I did I got f'(x)=1+[(1)(ln(8))(8^x)] Did I find the derivative correctly? And if I did, how do I find the zeroes of that??
asked by Jackie 
electromagnetism
#5 (5 points possible) Two identical solenoids are merged as shown in the figure. Which plot best represents the ycomponent of the magnetic field as it varies along the xaxis? Treat them as ideal solenoids.
asked by JuanPro 
geometry
I tried to figure this problem out, Did I do it correct? m
asked by miranda 
Math
What percent is 3/8? a. 21 b. 38 c. 55 d. 68
asked by Angelina 
law
what are some examples of successful or unsuccessful criminal justice system services
asked by sharday 
Vectors
How would I convert cartesian equation to parametric? For example: 2xy+3z6=0
asked by Sara 
Science
Which of these is odd in the series? (a)sodium (b)sulphur (C)plutonium (d)francium
asked by Olushola 
math
If we say that rare events are those events that happen with a probability of less than .05, then how many observations of men taller than 71 inches tall would you have to observe when randomly sampling before concluding that you had a rare sample? mean =
asked by Anonymous 
AP CALC
If f(x)= { e^(x)+2, for x0 is differentiable at x=0, then a+b=_____?
asked by Rachel 
Math
Can someone do out the calculations for me on 7 yds , 1 ft, 3 yds, 2 ft,= what in ft . Thanks
asked by Jen 
English
1. We need to cut 20 trees to make every 1 ton of paper cups. 12. We need to cut 20 trees to make every 1 t of paper cups. 2. We need 10 l of water to make a piece of A4 paper. 3. We need 10 liter of water to make a piece of A4 paper. 4. We need 10 liters
asked by rfvv 
Math
Find the cost of shingles for the gable roof roof below if one bundle covers approximately 33ft2 and costs $29.95.The top is both ways is 12.7 meters and down is 7.5 meters . Thanks
asked by Tina 
Math
Perform the calculations 6 ft, 5 in,2 ft, 7 in = what in ft, and inches Thanks
asked by Michelle 
electromagnetism
#6 (6 points possible) The demonstration in LS6.U5 uses a Helmholtz coil, which is a pair of wire coils along a common axis that creates a somewhat uniform magnetic field at the center. To achieve a uniform field, the coil separation is equal to the coil
asked by JuanPro 
electromagnetism
#10 (5 points possible) At what frequency in Hz will this circuit have the same current with the switches open and with the switches closed?  unanswered
asked by JuanPro 
Physic
A newly prepared radioisotope has activity 3.7x10^11 Bq. After 4 hours, its activity is reduced to 2.96x10^11.calculate a) decay constant b) its half life
asked by Aboi 
math
who found a subject called math
asked by Anonymous 
Science
Consider the carbon atom whose nuclear mass is 11.996amu.calculat mass defect when proton=1.00728amu,neutron=1.00867amu
asked by Olushola 
Sociology
Hi, I'm writing a paper for my social problems class and am having a hard time coming up with advantages and disadvantages of increasing the number of streetpatrolling police officers as a means to combat the high prevalence of violent crime within the
asked by mysterychicken 
math
2x^2=64/x^24x4/x=8
asked by makayla