Questions Asked on
May 27, 2013

Physics
Four equal +6.00μC point charges are placed at the corners of a square 2.00 m on each side. ( = 1/4π = 8.99 × 109 N · m2/C2) (a) What is the electric potential (relative to infinity) due to these charges at the center of this square?
asked by X 
Maths
If is a n acute angle and tanx=3 4 evaluate cosxsinx cosx+sinx
asked by Anonymous 
Statistics
The number of ships to arrive at a harbor on any given day is a random variable represented by x. The probability distribution of x is as follows. (Give your answers correct to two decimal places.) x 10 11 12 13 14 P(x) 0.37 0.09 0.05 0.14 0.35 (a) Find
asked by Gayle 
Math
Gerald can complete a math assignment in 2 hours and a physics assignment in 1 hour. If he has 8 hours to complete a set of assignments, how many math assignments can he complete if he decides to leave the science assignments for the next day? This
asked by Katie 
econ
Suppose the reserve requirement ratio is 20 percent. Assuming no bank holds excess reserves and nobody withdraws cash, a $10,000 injection of new excess reserves by the Fed can create A) $2,000 in new checkable deposits B) $10,000 in new checkable deposits
asked by carolyn 
heeeeeeeeeeeeeelp maths
How many integers 1≤N≤1000 can be written both as the sum of 26 consecutive integers and as the sum of 13 consecutive integers?
asked by Anubhav 
chemistry
the concentration of urea in a solution prepared by dissolving 16g of urea in 39 g of H2O is ________% by mass. The molar mass of urea is 60.0 g/mol
asked by jen 
Chemistry
What mass of N2O5 will result from the reaction of 6.0 mol of NO2 if there is a 61.2% yield in the reaction?
asked by Brya 
Chemistry
Cyclohexane has a freezing point of 6.6 degree Celsius and a K(f) of 20.0 degree Celsius/m. 1.50g of an unknown solute is dissolved wth 18.0g of cyclohexane. The freezing point of the solution was 1.3 degree Celsius Using this iInformation assuming the
asked by Michael 
Physics
Starting from rest, a skier slides 100 m down a 28 degree slope.How much longer does the run take if the coefficient of kinetic friction is 0.17 instead of 0?
asked by James 
math
write 2y^3 without exponents
asked by topaz 
statistics
Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends
asked by Ann 
statistics
My mean is 175.5 My standard deviation is=90.57 Sample=25 Formula to be used: P(X>190)=P((Xmean)/s sqrt of my sample is = 5 (Which is the square root of 25.) (190175.5) / 90.57/5) 14.5/18.114 calculator says 0.8004858120790548746825659710721 I check the
asked by Ann 
physics
Many of you may have noticed the phenomenon that basketballs get flat if the weather is cold. If a basketball was inflated to a gauge pressure of 60,000 Pa when the temperature outside was 20∘C, what is the gauge pressure inside the basketball in Pa when
asked by stranger 
Chemistry
If 1.62 mold of CS2 burns with 5.65 mol of O2, how many moles of the excess reactant will still be present when the reaction is over? the chemical equation is CS2+3O2=2SO2+CO2
asked by Brya 
Statistics
Suppose a box of marbles contains equal numbers of red marbles and yellow marbles but twice as many green marbles as red marbles. Draw one marble from the box and observe its color. Assign probabilities to the elements in the sample space. (Give your
asked by Gayle 
science
Should humans be concerned with the extinction rate? And discuss whether or not humans strive to preserve representative samples of all biomes on the planet.
asked by lu 
math
You want to put $4,000 in a simple interest account. It has a 2.5% annual interest rate. How long will it take you to earn $500 in interest?
asked by maddie 
econ
Congress' control over the Fed is a. substantial because it can cut off necessary appropriations b. limited because the Fed is not dependent on Congress for the funds to support its operations c. substantial because the members of the Board of Governors
asked by carolyn 
Chemistry
Assume you are starting with a 10x solution. how would you make it a 7.5x dilution?
asked by Nance 
Physics
A box weighting 200N is pushed on a horizontal floor. What acceleration will result if a horizontal force of 100N is applied to the box.? coefficient of friction is 0.4
asked by silent_klr 
Mathematics
Given the set of integers {1,2,3,…,801}, what is the maximum number of sets we could distribute these numbers into such that the sum of each set is exactly the same?
asked by hope any one can help 
trig
A security camera needs to be set so that the angle of view includes the area from a doorway to the edge of a parking lot.The doorway is 16m from the camera. the edge of the parking lot is 24m for the camera. the doorway is 28m from the edge of the parking
asked by Anonymous 
Mathematics
Let x,y,z be nonnegative real numbers satisfying the condition x+y+z=1. The maximum possible value of x^3y^3+y^3z^3+z^3x^3 has the form a/b where a and b are positive, coprime integers. What is the value of a+b?
asked by hope any one can help 
Math
In triangle ABC, points D,E,F are on sides BC,CA,AB respectively such that AD,BE,CF are angle bisectors of triangle ABC. The lines AD,BE,CF are concurrent at I, the incenter of triangle ABC. If ∠BAC=92∘, what is the measure (in degrees) of ∠EIF?
asked by John 
Statistics
Suppose that you are in a class of 31 students and it is assumed that approximately 13% of the population is lefthanded. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are lefthanded. (b)
asked by Gayle 
main ideas
what purpose dose question 36 serve in the paragragh . Myfamily has a quaint cottage at a small private lake. The cottage is about 75 years old but we try to keep it in good condition
asked by Anonymous 
math
Amir's class has 24 students. There are 15 boys in the class. Whitch of the following represents the ratio of girls to boys?
asked by renisa 
maths
State the coordinates of a point whose position vector is as follows: (a) 4i + 8j (b) 6i  7j
asked by Shamine 
math
Calvin's River Crossing Attempt 180 points Calvin is playing a game of Dungeons and Dragons. In order to make it across the river, he needs to throw six 4sided dice, and have their sum be a multiple of 5. How many different dice throws result in Calvin
asked by Mathslover 
math
Let S be a set of 31 equally spaced points on a circle centered at O, and consider a uniformly random pair of distinct points A and B (A,B∈S). The probability that the perpendicular bisectors of OA and OB intersect strictly inside the circle can be
asked by Mathslover 
math
The length a spring stretches is directly proportional to the force applied. If a force of x pounds stretches a spring h inches, how much force is necessary to stretch the same spring m inches? (Assume x = 7, h = 4, and m = 15.)
asked by lisa 
Physics
Two ends of the narrow coil are connected to the terminals of an oscilloscope. The solenoid, which was orginally 40cm long is rapidly extended to 140cm long in 50ms. Assume the solenoid is pulled at uniform speed at both ends.. B=3.02*103 T magnetic flux
asked by Jayy 
Science
80.00 kg man catches a puck moving at 20 m/s, man is initially at rest. Man and puck move together after collision. The pucks mass is 0.16 kg, what is the final velocity?
asked by Raena 
English
Rewrite all of the following sentences so they are in the active voice. Some sentences could contain more than one passive verb; correct them all. 1. After a contentious debate, it was decided that the board members would take a 15minute recess. 2.
asked by Mary Mary 
Math
If you roll a die 48 times and 8 of the rolls result in a "5," what empirical probability was observed for the event "5"? (Give your answer correct to three decimal places.)
asked by Sue 
Statistics
Consider the following. (a) What percentage of a normal distribution is greater than the mean? (Give your answer correct to the nearest percent.) Incorrect: Your answer is incorrect. . % (b) What percentage is within 1 standard deviation of the mean? (Give
asked by Gayle 
Introduction of Psychology
Mr. Lunn's class is walking down the hall using walking feeet. This is an example of an: a.permissive disicipline b.an awareness of registers c.rule bonding d.altruism
asked by Anonymous 
medical coding
what is the icd9 procedure for suture repair with layered closure of the hand 4.0cm
asked by daniel 
factroing monomials
5x^215 if you factor it it equals 5(x^23) right?
asked by anonymous 
Statistical probability411
Please help. I didn't get the right answer with this before. A mathematics journal has accepted 14 articles for publication. However, due to budget restraints, only 7 articles can be published this month. How many specific ways can the journal editor
asked by Jennifer W. 
statistical probability411
Please help. I didn't get the right answer with this question before: Your English teacher has decided to randomly assign poems for the class to read. The syllabus includes 4 poems by Shakespeare, 5 poems by Coleridge, 2 poems by Tennyson, and 2 poems by
asked by Jennifer W. 
Trigonometry
Given that sin(2θ)=2/3, the value of sin^6θ+cos^6θ can be written as a/b with a and b as coprime positive integers. Find a+b.
asked by Shin 
MATH
1 My Math problem Intergers 2(2) = 4 iS 4 CORRECT 2.Between noon and 3pm, temp dropped 9 degrees (f). It increased 4 degrees (f) between 39m & 5pm and dropped 15 degrees(F) between 5om and midnight.If the temperature was 2 degrees (f) at midnight,
asked by AMERICAL 
algebra 2
two resistors are connected in parallel. their resistances are 8 ohms and 17ohms. what is the resistance of the combonation.
asked by maddy 
theology
there are no variations within the catholic liturgy. all liturgy is identical worldwide. true or false?
asked by allie 
Math
Suppose an equation that describes the path of a diver when diving off a platform is d = 5t^2 + 10t + 20. Where d is the distance above the water in (feet) and t is the time from the beginning of the dive(seconds). After how many seconds is the diver 25
asked by Saif 
Eng
Which one of the following statements is an example of a complex sentence? A. Neap tide is the best time for digging clams. B. Sparrows as the bird feeder compete for seeds. C. The earth was spinning when Lucas firs saw Lucille. D. The crescent moon is a
asked by Jen 
Eng
What is the simple predicate of the following sentence? The Saturn rocket made travel to the moon possible. A. Possible B. Moon C. Travel D. Made Answer is C
asked by Jen 
life orientation
ways in which one can take responsibility to provide a healthy and safe environment
asked by Anonymous 
middle madness
My word problem after receiving her paycheck, Shane gave $15 to her brother and bought a sweatshirt for $`8. Sh put half of the remaining money into her savings account. If she $46 eft, what was the amount of her paycheck. Answer $107
asked by tangela 
Chemistry
What is the volume of HCl stock (37%) you must add in order to make up a 10.0% diluted HCl solution, if the final volume to be achieved is 600mL?
asked by Kayden 
life orientation
describe the lifestyle disease (cancer) or behaviour and also mention 5 factors that contribute to the disease
asked by nqo 
Physics HELPPP PLEASEEE
A 2.0 kg ball moving with a speed of 3.0 m/!@#$%^&s, elastically, an identical stationary ball as shown. If the first ball moves away with angle 30° to the original path, determine the speed of the first ball after the collision. the speed and direction
asked by Joeline 
Eng
Which of the following sentences is correctly punctuated? A. the company held it's annual party at the convention center. B. Mr. Jones visited the YMCA before becoming a member. C. Mary remembered to buy milk. didn't she? D. The local police asked the
asked by Jen 
Algebra
If Don Gecewicz invests $5000 at 9% interest compounded quarterly, find the amount after 4 years.
asked by drew 
Chem
The molar weight of MgSO4 is 120.366gmol1. What is the mass/volume percentage of a 2.5M water solution of MgSO4?
asked by James 
social studies
Ben's family purchased a dishwasher so that the family members could save time for more productive activities. what kind of production factor is this?
asked by Taylor 
maths
5x^(3)+ 6x^(2)+8 =(Ax+1)(x2)(x+B)+x5C
asked by harish 
algebra
10y6=12
asked by Mrs. Cash 
physics, thermo
calculate the heat required to produce 1.7 kg of wet steam at 2000 kpa from water at 160 degrees celsius and a dryness fraction of 81%, answer in kj.
asked by chad, please help 
social studies
how does a society answer the three economic questions about the production and consumption of goods and services?
asked by Taylor 
physics
A homogeneous ball with mass m=1 g and total charge q=10^−3 C (uniformly distributed) is placed on a horizontal xy plane. The balls starts rolling without slipping under the influence of a uniform electrostatic field E(vector) =(E,0,0) with E=1 V/m. Find
asked by ss 
Business
As a small business owner operating from home, Give major examples to your Board of Revenue to avoid tax payment.
asked by Black Concepts 
English
Rewrite all of the following sentences so they are in the active voice. Some sentences could contain more than one passive verb; correct them all. Convicted murderer Jonathan Walters was walked to the electric chair at 5 a.m. in the company of the warden.
asked by Afranko 
ChemistryDrBob222
Estimate the number of moles of gas (and mass of gas assuming that it is all N2) inside your family car (or a friends if you don't have one). If the amount of gas was compressed at constant temperature to fit inside a coke can what ould the pressure inside
asked by Timofey 
Biologyyy
Please can someone give me an interessting title for a project on hepatitus c
asked by marlen 
math
write 2y^3 without exponents
asked by topaz 
algeba
1 1/2x4 2/3=11/6 not sure on how to put fractions in on the computer.
asked by Mrs. Cash 
math
if you had 250 in your account, then deposited x dollars in the account, How do you write a expression that shows the new balance? a) 250x, b) 250x c) x+250 d) 250/x
asked by skylark777 
Math
Can you show and easy way to show this formula in the form of an equation Example: a = b × r/100
asked by Stuck 
algebra
For the given functions f and g, find the following and state the domain of each result f(x)=sqrtx;g(x)=3x2 a) (f times g)(x)=___ What is the domain of f times g? b) (f/g)(x)=____ what is the domain of f/g?
asked by sharday 
algebra
For the given functions f and g, find the following and state the domain of each result f(x)=sqrtx;g(x)=3x2 a) (f times g)(x)=___ What is the domain of f times g? b) (f/g)(x)=____ what is the domain of f/g?
asked by sharday 
algebra
Find the average rate of change of f(x)=3x^2+1: a) From 1 to 3____ b) From 3 to 5____ c) From 1 to 4______
asked by sharday 
algebra
Graph function using the techinique of shifting, compressing, strecthing and /or reflecting f(x)=5(x+4)^2+1
asked by sharday 
Maths
If is a n acute angle and tanx=3 4 evaluate cosxsinx cosx+sinx
asked by Anonymous 
Maths
If is a n acute angle and tanx=3 4 evaluate cosxsinx cosx+sinx
asked by Anonymous 
math
f=795.8 c=0.o10 what is l
asked by shay 
algebra
Graph the following function using the technique of shifting, compressing, strecthing and/or reflecting Find domain and range of the function g(x)=2sqrtx3+7 domain=___ (interval notation) range=_____ (interval notation)
asked by sharday 
physics..
Two ends of the narrow coil are connected to the terminals of an oscilloscope. The solenoid, which was orginally 40cm long is rapidly extended to 140cm long in 50ms. Assume the solenoid is pulled at uniform speed at both ends.. B=3.02*103 T magnetic flux
asked by Jayy 
Maths
If is a n acute angle and tanx=3 4 evaluate cosxsinx cosx+sinx
asked by Anonymous 
Biology
What is the defferent of prokaryotic and eukaryotic cells
asked by Anonymous 
Eng
In the sentence "I want to sleep when I'm tired," the words "to sleep" are a/an A. indirect object. B. predicate adjective. C. prepositional phrase. D. infinitive phrase. Answer is D
asked by Jen 
MATH
I have 5 nickels 6 pennies and 8 dimes in a box. i select one at random. What is the probability that it was a penny or a dime ?
asked by Dap F 
geo
I need to find the the height of the prism, the volume of the prism, and the area of the base. The front has a measurement of 8 cm and the line on the side has 19 cm. can you please help me.
asked by Hannah 
science
A chemical reaction in which to or more substance undergo a chemical union to form more complex substance is a what reaction?
asked by louisa 
geometry
A manufacturer made a container that looked like the Washington Monument to fill with raisins, as shown. Find the volume of the container. The base has the front and sides as 2 and 2 inches the height is 5 in and the 2 inches.
asked by Hannah 
Mathematics
Find the number of pairs of nonnegative integers (n,m), such that 1≤n
asked by hope any one can help 
Math
resolve the vector v=[7, 9] into rectangular components, one of which is in the direction of [6, 2]
asked by Bob 
Statistics
Test the following function to determine whether it is a probability function. If it is not, then make it into a probability function. (Give your answers correct to one decimal place.) R(x) = 0.2, for x = 0, 1, 2, 3, 4 (a) List the distribution of
asked by Tom 
social
Crisis Management What can the government, individual and society do to combat crisis like a. Bomb blast / terrorist attack b. Earthquake c. Floods d. Fire accident.
asked by harish 
Statistics
Consider the probability function. (Give your answers exactly.) P(x) = 5 − x 10 , for x = 1, 2, 3, 4 (a) Find the mean. (b) Find the standard deviation.
asked by Tom 
chemistry
diffusion helps detecting leakages in cylinders or gas stoves
asked by Anonymous 
Statistics
The survival rate during a risky operation for patients with no other hope of survival is 87%. What is the probability that exactly four of the next five patients survive this operation? (Give your answer correct to three decimal places.)
asked by Tom 
PreCal
convert è = 2 to rectangular equation form
asked by Anonymous 
information technology
which wireless protocols is limited to operating in the 5GHz range only
asked by kagisho 
Calculus
Find the area between the two curves y1= x^2  4x + 5 and y2 = 2x  3, finding the points of intersection algebraically.
asked by Davey 
Life Orientation
In 1015 lines critically discuss 5 ways in which the human or environmental problem impacts on the community.
asked by Luv of God 
Please help me
How many permutations σ of the set {1,2,…,15} are there such that σ(1)=1,∣σ(n)−σ(n−1)∣≤2 for 2≤n≤15? Details and assumptions σ(n) denotes the nth position of the permutation.
asked by Mathslover 
Algebra 2
How do you simplify?: 4x/xx^2
asked by Courtney 
algebra
find three rational numbers of 8362 that will come to the right of the following numbers on the number line
asked by somen 
Maths
Iam stuck with this question including negative sign. Please I need help. Determine the magnitude and direction of this vectors (a) 8i + 6j (b) 5i  12j
asked by Shamine 
Math
Explain It Emily said the larger an object is, the more it weighs. Is Emily correct? Explain why or why not.
asked by Quan 
Maths
Iam stuck with this question including negative sign. Please I need help. Determine the magnitude and direction of this vectors (a) 8i + 6j (b) 5i  12j
asked by Shamine 
Maths
State the position vector of A(3,4)
asked by Shamine 
geomerty
A manufacturer made a container that looked like the Washington Monument to fill with raisins, as shown. Find the volume of the container the base is 2 in and 2 in the height is 5 in then the triagle is 2 in. There is a line between the h 5 and the 2
asked by Hannah 
math
Jack has 222 lego cubes, each of side length 1. He puts them together to form a rectangular prism. If the perimeter of the base of the prism is 10, what is the height of the prism?
asked by Mathslover 
geometry
I need to find the base, height, and volume of a triangu;ar prism. the front is 8 cm and the side bottom line is 19 cm
asked by Hannah 
math
A sphere of radius 32√ is tangent to the edges AB, AD, AA1, and the face diagonal CD1 of the cube ABCDA1B1C1D1. The volume of the cube can be written as a+bc√, where a, b are integers and c is a squarefree positive integer. What is the value of a+b+c?
asked by Mathslover 
Trigonometry
There are four complex fourth roots to the number 4−4√3i. These can be expressed in polar form as z1=r1(cosθ1+isinθ1) z2=r2(cosθ2+isinθ2) z3=r3(cosθ3+isinθ3) z4=r4(cosθ4+isinθ4), where ri is a real number and 0∘≤θi
asked by Shin 
Physics
A body of mass 25kg, moving at 3m/s on a rough horizontal floor is brought to after sliding through a distance of 2.5m on the floor. Calculate the coefficient of sliding friction.
asked by Adigun 
life orientation
5 ways in wich the human or environmental problem impacts on the community
asked by ayanda 
geometry
Find the surface area of the cone. in pie the radius is 3 cn the height is 18
asked by Hannah 
physic
a sportcar moving from rest 0 to 100km/h ..there hanging a pendulum in the car..what will be the angle pendulum can make with vertical line??
asked by krishna 
intermediate algebra
The Burbank Buy More store is going to make an order which will include at the most 60 refrigerators. What is the maximum number of TVs which could also be delivered on the same 18 wheeler? Describe the restrictions this would add to the original graph. I
asked by Anonymous 
7th grade Science
1. The atmosphere of Earth is an example of a ______solution.(1point) liquidliquid gasliquid gasgas** solidliquid Am I correct?
asked by Gabby 
physics
Consider a horizontal road with such a set of traffic lights, each spaced 100 m apart. A car sits at the first traffic light. At t=0 the light turns green and the car accelerates. What is the maximum time t in secondsthe next light must turn green by so
asked by stranger 
life orientation
provide recommendations on how to address the topic that you identify in the previous question
asked by ayanda dlamini 
physics
An airplane of a certain density and shape flies at a constant speed. To do so, it must fly with a certain velocity v0. If the size of the airplane is scaled up in length, width, and height by a factor of two, it can only fly above a new velocity v1. What
asked by stranger 
vectors
find three points on each plane [x,y,z]= [3,4,1]+s[1,1,4]+ t[2,5,3]
asked by sara 
Maths
Pipe A takes twice the time to fill up the pool as pipe B does.The pool can be filled up in 2 h when both pipes are opened How long will it take each pipe to fill it up alone Plz slove it in Linear equation
asked by Mary 
physics
A square loop 23.5 on a side has a resistance of 2.80 . It is initially in a 0.575 magnetic field, with its plane perpendicular to , but is removed from the field in 35.0 .
asked by melissa