Questions Asked on
March 6, 2011

physics
To stretch a certain spring by 2.00 cm from its equilibrium position requires 9.50 J of work. a. What is the force constant of this spring? b. What was the maximum force required to stretch it by that distance?
asked by Ana 
Chemistry
Element X has two natural isotopes:X6 (6.015amu) and X7 (7.016amu). calculate the atomic mass of element X given the abundance of X7 is 92.5%. a)12.5amu b)6.50amu c)6.09amu d)6.52amu e)6.94amu
asked by trisha 
Calculus 12th grade (double check my work please)
1.)Find dy/dx when y= Ln (sinh 2x) my answer >> 2coth 2x. 2.)Find dy/dx when sinh 3y=cos 2x A.2 sin 2x B.2 sin 2x / sinh 3y C.2/3tan (2x/3y) D.2sin2x / 3 cosh 3yz...>> my answer. 2).Find the derivative of y=cos(x^2) with respect to x. A.sin (2x) B.2x
asked by anon 
ENG1010
Which of the following is an announcement rather than a topic sentence? A) I want to talk about the increase in the divorce rate. B) Many people have trouble getting along with others. C) Almost one out of every two marriages ends in divorce. D) The
asked by Alex 
Literature 1010
Transitions function much like road signals. A) True B) False this question does not make sense. when i look in my book ans online, i do not see anything referring to the Transitions function can someone tell me what a transition function relating to
asked by Alex 
Literature 1010
A topic statement is made up of a limited topic and a writer's point about the limited topic? True Or False.
asked by Alex 
physics
Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 6.00 s. If the kinetic energy of the lighter cart after the push is K, the kinetic energy of the heavier cart is
asked by Ana 
calculus
Find the rate of change of area in respect to temperature of a rectangle. Its a steel plate that expands when heated. I have to find that rate of change when width is 1.7cm and length is 2.9. dl/dt=1.0 x 10^5 (this is an exponent...) and dw/dt=8.0 x 10^6
asked by Liz 
Physics
A child sits on a rotating merrygoround, 2.19 m from its center. If the speed of the child is 2.32 m/s, what is the minimum coefficient of static friction between the child and the merrygoround that will prevent the child from slipping?
asked by Christian 
Economics
As the aggregate price level falls, the number of domestic products purchased by foreigners will [rise], causing the quantity of domestic output demanded to [rise]. This is known as the [foreign purchases effect]. The first two blanks can be rise,fall or
asked by Jake 
Physics
A 35.0g bullet moving at 475 m/s strikes a 2.5kg wooden block. The bullet passes through the block, leaving at 275 m/s. The block was at rest when it was hit. How fast is it moving when the bullet leaves?
asked by Anonymous 
Chemistry
How many milliliters of 3.0 M NaOH are required to react with 4.0mL of 16.0 M HNO3? > Not sure if I am solving correctly but I keep getting 21mL.
asked by K 
MATH
Please help check my answers to make sure they are correct. I used the "sinking fund payment and present value of an ordinary annuity" formulas to solve this story problem. Thanks! Story: Naomi Dexter is 20 years old. She decides to investigate several
asked by April 
Physics
To move a large crate across a rough floor, you push on it with a force at an angle of 21 below the horizontal, as shown in the figure. Find the acceleration of the crate if the applied force is 400 , the mass of the crate is 32 and the coefficient of
asked by Randy 
Psychology/ Human Growth
6. According to Kohlberg, a person's stage of moral development is determined by the: a. Type of moral reasoning the person exhibits b. Specific moral conclusions the person reaches c. Overall intelligence of the individual d. Person’s actions in dealing
asked by MEGHAT 
chem
Magnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3N2. Magnesium nitride reacts with water to give ammonia. Mg3N2(s) + 6 H2O(l) → 3 Mg(OH)2(s) + 2 NH3(g) What volume of ammonia gas at 24°C and 753 mmHg will be produced
asked by D 
math
a regular triangular pyramid with a slant height of 9 m has a volume equal to 50 m³. Find the lateral areas of the pyramid.
asked by mhy 
Organic chemistry
Draw major product of substitution reaction of (2R,3S)2bromo3methylpentane with CH3CH2O nucleophile?
asked by Zoe 
Physics
Why is the total distance traveled by a mass traveling in a circle of radius R during n revolutions, 2piRn?
asked by Mandy 
Chemistry
1. Calculate the number of calories needed to increase the temperature of 50.0 g of copper metal from 21.0 degrees C to 75.0 degrees C. Given, the specific heat of copper is 0.382 cal/g x degrees C. 2. What will be the final temperature if 2000g of copper
asked by Shona 
trig
give and exact value for cos(2pi/3)
asked by Nicole 
physics
A cart running on frictionless air tracks is propelled by a stream of water expelled by a gaspowered pressure washer stationed on the cart. There is a 1.0m3 water tank on the cart to provide the water for the pressure washer. The mass of the cart,
asked by HELP!!!! 
maths
if it takes 1 monkey to eat a banana in 1 minute how long will it take 8 monkeys to eat 8 bananas
asked by chloe 
geometry
Quadrilateral QRST has two pairs of congruent sides, but it is not a parallelogram. What figure is it? What further condition would it have to satisfy to be a parallelogram? A. The figure is a square. To be a parallelogram, it would have to have pairs of
asked by Kate 
Geometry
Find the perimeter of a square to the nearest tenth if the length of its diagonal is 16 millimeters
asked by Amber 
trig
if theta is an angle in standard position and B(3,4) is a point on the terminal side of the angle, what is the value of sin theta?
asked by Victoria 
math
al has 3 less than 4 times as many candy bars as neil,n. write an expression representing how many candy bars al has compared to neil >>>> THNX!:))
asked by alexis 
Math
Which term in the expansion of ((1/2x^3)(x^5))^8 is a constant? THANKS!!
asked by Jowin 
English
I need help with a catchy slogan for a bow with WIFI connectivity, a popup screen, and the ability to change colors and change into all accessories? Can someone help???Thank you!
asked by Anoymous 
math
find the values of a and b if the function y=2x^3+ax^2+bx+36 has a local maximum when x=4 and a local minimum when x=5
asked by badial 
physics
A cylindrical rod( length L, radius R and density d) is dipped vertically in to a liquid. the rod is connected by a wire to a balance that measures the force to lift the rod. the contact angle between rod and liquid is θ. If rod is partially immersed so
asked by kinjal 
Chemistry
How many milliliters of 3.0 M NaOH are required to react with 0.50g of Cu2+ to form Cu(OH)2?
asked by K 
physics
Driving in your car with a constant speed of 12 m/s, you encounter a bump in the road that has a circular crosssection. If the radius of curvature of the bump is 35 m, find the apparent weight of a 63kg person in your car as you pass over the top of the
asked by Randy 
statistics
refer to the schools data set in appendix m which refers to the 94 school districts in northwest Ohio. divide the school districts into two groups. include all schools with less than 2000 students in one group and the other being the ones with more than
asked by sarah 
physics
a uniform electric field of magnitude 2.5*10^4, makes an angle of 27 with a plane surface area of 0.0133m^2.what is the electric flux through the surface.
asked by ike 
college subjeet physics
a100 grams bullets is fired from a 10kg gun with a speed of recoil of the gun
asked by ayesha khan 
Algebra
Bracelets You are making beaded bracelets for your friends. You want to use 30 beads for each bracelet and want to use no more than 145 beads. Write an inequality that models this situation. Can you make 4 bracelets?
asked by Vanessa 
Literature 1010
The third step in effective writing is to A) organize and connect the specific evidence in a paper B) write clear, errorfree sentences C) make a point D) support a point with specific evidence
asked by Alex 
algebra
the sum of two polynomials is 40x^52x^4+x^37x^21. if the polynomial is the square of (x^27x+1), find the other polynomial
asked by Anonymous 
chemistry
H2 (g) is made when 8.5 grams of Li is placed in water. The reaction also creates Lithium Hydroxide. Li + H2O > LiOH + H2 How much H2 (g) is made? (the (g) means gas!)
asked by Lily 
math
A right circular cone is inscribed inside a sphere. The right circular cone has the radius of the base of 4 inches and the height is greater than 2 inches. The sphere has a radius of 5 inches. What is the ratio of the volume of the cone to the volume of
asked by Jessica 
english
how would you say Clara Bow, felt about men? There's one quote where she says: The more I see of men, the more I like dogs.
asked by Sarah 
Calculus
Determine if Rolle's Theorem applies to the given function f(x)=2 cos(x) on [0, pi]. If so, find all numbers c on the interval that satisfy the theorem.
asked by Ky 
science
what is an independent variable
asked by kevin 
Physics
At 7.65 cents per kilowatthour, what does it cost to operate a 10.0 hp motor for 6.00 hr? At 7.65 cents per kilowatthour, what does it cost to leave a 75.0 W light burning 24.0 hours a day?
asked by Ana 
HCA 270
What types of cost allocation criterion and methods are available to all healthcare organizations?
asked by MMMMMMM 
chemistry
what is a type III binary compound containing 3 atoms per molecule, with a total # of protons being 32? It's not Silicon dioxide, because SiO2 has 30 protons.. i need 32..
asked by Maria 
chemistry
what is a type III binary compound containing 3 atoms per molecule, with a total # of protons being 32? It's not Silicon dioxide, because SiO2 has 30 protons.. i need 32..
asked by Maria 
Math Linear Programming
A dog food is to be mixed from three kinds of ingredients: rolled oats, beef parts, and whey. The cost of each is 20 cents, 40 cents, and 35 cents per lb. Each ingredient contains 50, 450, and 200 units of protein and 350, 65, and 100 units of carbohydrate
asked by Melissa 
Math
Find (fg)(3) when f(x) = x + 3 and g(x) = sq. rt. x  7
asked by Britt 
Math
Farmer McDonald has 150 acres of land to put into crops and 8000 dollars to spend planting and raising them. He can plant two crops, which we'll call crop A and crop B. Crop A costs $40/acre to raise and crop B costs $60/acre. He also has time costs to
asked by Jacqueline 
Math
determine if the given function is onetoone. if it is, find the inverse. f(x) = 8x  4 A) f1(x) = x+4 / 8 B) f1(x) = x4 / 8 C) Not onetoone D) f1(x) = x/8 + 4
asked by Jo 
Chemistry
The freezing point of a 0.10m solution of mercury(I) nitrate is approximately 0.27 degrees celsius. Show that these data suggest that the formula of the mercury(I) ion is Hg2 2+
asked by Amy 
com 170
I believe this paragraph below is a Analysis I have to pick between summary,analysis, synthesis, and evaluation can you tell me if i am right and if not which one and why? 1. Alice Doe’s article discussed overlooked tax deductions. It talked about some
asked by frank 
Math
An expression that equals 377 and contains a multiple of 9 but no 2 or 5
asked by Prp 
foundation of personal finance
did the recommendation change the way you previously thought about buying vs leasing a car?
asked by amanda 
social studies (urgent)
ok i am researching on chad and i need help finding some stuff what are chad dances what are chad arts please help and thank you
asked by neeedhelppp 
history
Major outcomes of the SpanishAmerican War included all of the following EXCEPT: A. the establishment of an extensive American empire. B. the emergence of the nation’s status as a world power. C. the reluctance of the government to get involved in other
asked by sharice 
English
Can any one show me how to cite a page the correct way for a research paper?
asked by Abe 
Physics
12MJ of energy is released when 1kg of dynamite is exploded. How much matter is converted into energy in the process?
asked by Dee 
physics
what impulse occurs when an average force of 10n is exerted on a cart of 2.5 s? What change in momentumdoes the cart undergo/ If the mass of the cart is 2K and the cart is initally at rest, calculate it's final speed.
asked by stan 
Algebra
3x to the second power,minus 15x plus 18 is????
asked by Christina 
HUM/176
in my assignment it asks me to compare and contrast information in the news stories as well as how they are presented. It also asks to answer the following questions, what links are included and how does the commentary associated with the stories and
asked by sandi 
Financial Management
The group product manager for ointments at American Therapeutic Corporation was reviewing price and promotion alternatives for two products: RashAway and RedAway. Both products were designed to reduce skin irritation, but RedAway was primarily a
asked by Anonymous 
physical
A battery of e.m.f 24v and internal resistance of 4ohms is connected to a resistor of 3ohms.what is the terminal potential difference of the battery
asked by vincent 
social studies
self made millionaire who started in doortodoor sales
asked by suzane 
english
Write the missing verb form present get past got then what would past tense be with has,have, or had? would it be went or gone? Thanks
asked by jill 
Math
Simple Interest Rate Question? Prt=(18000)(0.075)(18/12) = to 2025? 18 months 12 (1yr)
asked by Bettye 
chemistry
A sample of calcium nitrate with a mass of 1.00 g was dissolved in water and diluted to 100.00 mL in a volumetric flask. What is the concentration of the calcium nitrate ?
asked by cassie 
physics
if the rolling ball represents the running vaulter and the ruler represents the pole in the model, how does the amount of bend in the pole depend on the vaulters running speed? record your data and response in your log.
asked by dana 
chemistry
A sample of calcium nitrate with a mass of 1.00 g was dissolved in water and diluted to 100.00 mL in a volumetric flask. What is the concentration of the calcium nitrate ?
asked by cassie 
chemistry
Write the relevant chemical equations that will allow you to separate the following cations : 1Hg subscript 2 2Cation 2+, 2Pb2+, 2NH subscript 4 cation + 5 MN2+, and Fe3+
asked by Anonymous 
Chemistry
What is the purpose of adding zinc chloride in the preparation of starch iodide paste? Please refer to the procedure below:  Starch Iodide Paste Heat 100mL of water in a 250mL beaker to boiling, add a solution of 0.75g of potassium iodide in 5mL of
asked by Jan 
Psychology/ Human Growth
1. One undesirable change that often occurs during adolescent growth spurt is a(n) a. Dangerous enlargement in heart size b. Change in eye shape, causing nearsightedness c. Increased likelihood of asthma d. Decrease in lung capacity I have a college test
asked by MEGHAT 
Psychology/ Human Growth
2. According to Piaget, many 16 yearolds have reached the cognitive stage called: a. Preconventional thought b. B. formal operational thought c. Concrete operational d. Postconventional thought Please help me and Thank you so much!
asked by MEGHAT 
Chemistry
Can someone please help me complete these calculations for my lab; I am having some trouble. A. Standardization of Na2S2O3 Mass of KIO3 in 100mL = 0.09600g Calculate Molarity of KIO3= ? Please check: 0.09600g/(214.0g/mol)=4.486x 10^4 mol 4.486
asked by Bryant 
statistics
60% of the students at a college are female. If 13 students at that college are selected random, find the probability that 5 or 6 students will be female
asked by jill 
math
If a hot dog vendor offers 18 different condiments; how many condiment combinations are there?
asked by Rob 
hca270
what are the appropriate uses of a budget?
asked by MMMMMMM 
Linear Algebra
1/ Prove that the set V=R+ ( the set of all positive real numbers) is a vector space with the following nonstandard operations: for any x,y belong to R+ & for any scalar c belong to R: x O+ ( +signal into circle) y=x.y (definition of vector addition) & c O
asked by Tri N 
Trig
If = 58° and m = 120 in, what is the value of n to the nearest tenth of an inch?
asked by Josh 
physics
2 energy questions to fill in the blank: 1) The path that an object follows as it is raised does not affect the _____ of the object. 2) The increase in potential energy of any system is equal to the output _____.
asked by Nabil 
math
In OO, mbac=290°.find m
asked by liz jones 
AP Calculus
Find the total area enclosed by the graph of y=(e^sinx)*(cosx) and the xaxis from x=0 to x=pi I got .0563331993 but when I checked it graphically I got 3.22765
asked by Leanna 
ENG
Choose the correct verb: Some people (know, Knows) more about their favorite TV characters than they do about the members of their own family. A) knows B) know
asked by Katie 
PHYSICS
A CIRCULAR SAW BLADE ROTATING AT 15 REV/S IS BROUGHT TO A STOP IN 125 REV. WHAT IS THE VALUE OF WO IN RAD/S? 94.2 RAD/S WHAT IS THE SIZE OF THE DISPLACEMENT, TEITA, IN RADIANS? WHAT IS THE SIZE OF THE ANGULAR ACCELERATION EXPERIENCED? HOW LONG DID IT TAKE
asked by DMITRIC 
Sociology
how can the concept of structuration help us to understand better the challenges faced by MaMarrandi?
asked by nobubelo 
ENG
The second stage in the writing process is to A) accumulate raw material. B) brainstorm or freewrite or make a scratch outline C) shape your raw material through a series of two or more drafts D) edit your draft of the paper
asked by Bobby 
Physics
For a physics lab involving watchnig a gldier move down an air track with uniform acceleration, and recording the results in a table then graphing the results,do I include that "Observations were held and results were recorded in a table. Two graphs, one
asked by Emily 
CALCULUS
Y=(XSQUARE + 1 OVER XSQUARE  1) CLOSE PARENTHESIS TO THE 3 POWER...
asked by DMITRIC 
math
How many two digit numbers are there in base 5. I really don't understand how to figure this out. I know it's been asked already, but I still don't understand it.
asked by jason 
com 156
Write two paragraphs, with a total minimum word count of 350 words, explaining what your point of view will be and what you plan to accomplish in your paper. My thesis is on why credit card companies should not market on campus.
asked by sheyenne 
Calculus
Find the derivative of f(x)=e^(sin(1))+(sin(1))^x.
asked by Abigail 
math helpp
kathy will babysit six cats. she charges $75 for the week for supplies and $8 for each hour,h,she works. write an expression for the total amount kathy charges. >> THNX!!!
asked by alexis 
com 156
why should credit card companies not be allowed to market on campus?
asked by sheyenne 
math
Find the value (in lowest terms) of the following product: (11/2^2)(11/3^2)(11/4^2),...,(11/2011^2).
asked by Janice 
Algebra
Gloria has a gallon of paint to cover 500 square feet of drywall. She pointed out that for 10,000 square feet she needs 20 gallons of paint. Let's say the output (the range) is going to tell us how many gallons of paint to buy at the hardware store. The
asked by Jada 
Psychology/ Human Growth
3. With his new ability to think hypothetically, a 13 yearold boy is most likely to: a. Think about how things should be b. Accept conditions as they are c. Feel confident about his future d. Believe that the world is just 4. One of the inadequacies of
asked by MEGHAT 
math
write an algebraic expression representing three less than half a number
asked by alexis 
math
write an algebraic expression representing three less than half a number
asked by alexis 
physics
A uniform, square metal plate with side L = 3.50 cm and mass 0.087 kg is located with its lower left corner at (x, y) = (0, 0) as shown in the figure. Two squares with side length L/4 are removed from the plate. (a) What is the xcoordinate of the center
asked by Anonymous 
international relations
what is happening in Libya/ what was happening for the past few das
asked by nobubelo 
math hellp me please
write a algebraic expression representing 3 more than the quotient of 4 and a number,n
asked by alexis 
math
In triangle ABC, side AB = 17 inches and side BC = 25 inches. What could be the length of side AC?
asked by Julia Maloney 
Social
Durning the industrial revolution, as the expansion of industry happened and the scale and volume of production increased, what impact did this have on the market system?
asked by Jon 
chemistry
what is the numerical value of the equilibrium constant Kgoal for the reaction CO2(g) C(s) +O2(g)
asked by gin 
international relations
what is happening in Libya/ what was happening for the past few das
asked by nobubelo 
Physics
In 1996, the Fiberoptic Link Around the Globe (FLAG) was started. It initially involves placing a 27,000 km fiber optic cable at the bottom of the Mediterranean Sea and the Indian Ocean. Suppose the index of refraction of this fiber is 1.56. If all
asked by Ashley 
math
16_k=8 In the equation above, _ represents one of the operations of arithmetic: addition, subtraction, multiplication, or division. If k is a positive integer not equal to 8, what must be the value of k?
asked by Haley 
Physics
In 1996, the Fiberoptic Link Around the Globe (FLAG) was started. It initially involves placing a 27,000 km fiber optic cable at the bottom of the Mediterranean Sea and the Indian Ocean. Suppose the index of refraction of this fiber is 1.56. If all
asked by Ashley 
math
during a special promotion, each customer who makes a purchase is given a coupon for a discount of either 10,20, 30,40, or 50 percent. if a customer has an equal chance of receiving any one of the 5 types of discount coupons,what is the probability that
asked by joe 
trig
tanx sin^2x capital sigma [0,2p]
asked by Bennett 
economics
What would happen to unit sales and total revenue for this textbook if the publisher reduced its price?
asked by sue 
math
The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of a fatal accident over a lifetime? Explain your reasoning
asked by d 
physics
A thin rectangular plate of uniform area density σ1 = 1.00 kg/m2 has a length a = 0.500 m and a width b = 0.210 m. The lower left corner is placed at the origin, (x, y) = (0, 0). A circular hole of radius r = 0.040 m with center at (x, y) = (0.057 m,
asked by Anonymous 
physic
A 120kg box is loaded into the trunk of a car. If the height of the car's bumper decreases by 20 cm , what is the force constant of its rear suspension? looking for N/m
asked by Randy 
calculas
how long will it take an ice cube to melt completely? You left out an ice cube ant 1/4 of it melts in 1 hour. Use the following steps to find out how long it will take before it is melted completely. 1let s represent the side length of the ice cube, and
asked by julie 
physics
1)Under ideal conditions, if 300 J of work are required tolift a mass to a certain height, the same mass should provide ___ J to do work as it falls back to Earth. Can you please comment as to whether my answer of 300 J is correct? 2)___ is conserved
asked by Shardi 
geometry
your neighbors are purchasing a pool. their backyard is 20 yards wide and 30 yards deep. unfortunately the pool dealer will only deal in liter sized pools what is the biggest pool they can get and how many liters will it be?
asked by victoria 
chemistry
How much water do you need to add to 10 mL of a solution of HCl with a pH of 3 to change the pH to 6?
asked by Anonymous 
algebra
Suzie’s flower shop estimates that supplies costs for one month will be given by the polynomial 2x2 + 14x – 9. She estimates that utilities costs for one month is given by 12x – 3. Find and simplify an expression that would estimate Suzie’s total
asked by Joe Hahira 
statistics
An automobile shop manager times six employees and found that the average time it took then to change a water pump was 18 minutes. The SD of the sample was 3. Find the 99% of the interval of the true mean.
asked by katelyn 
math
Suppose 80% of citizens in Singapore are smokers. During a year, 50% of smokers suffer from at least one respiratory disease, but only 10% of nonsmokers suffer from at least one respiratory disease. Suppose a citizen in Singapore is drawn randomly. Let S
asked by Paula 
math
Find the rule? In Out 2 1/2 3 3/4 5/6 5/24 2/3 1/6
asked by hamza 
Business
Which economic system is the best solution for handling a crisis of epic proportion?
asked by Tanya 
physics
A cylindrical rod( length L, radius R and density d) is dipped vertically in to a liquid. the rod is connected by a wire to a balance that measures the force to lift the rod. the contact angle between rod and liquid is θ. If rod is partially immersed so
asked by kinjal 
math
Obesity is defined as a body mass index of 3 kg/m2 or more. A 95% confidence interval for the percentage of U.S. adults aged 29 years and over who were obese was found to be 22.4% to 22.5%. What was the sample size?
asked by katelyn 
Algebra 1
What is the answer to 6t^+24t3t+2? And please explain the steps of how to solve this. The directions say to factor each polynomial.
asked by Blake 
prealgebra
find the volume of a pyramid 9in.by9in. by3in.round to the nearest tenth
asked by alfred 
social studies
what are two homework questions about pope leo III????
asked by andrea 
statistics
a machine used in a production process is set up correctly 97% of the time. Given that the machine is set up correctly, only 5% of the items it produces are defective, while 95% are not defective. On the other hand, if the machine is set up incorrectly,
asked by Anonymous 
chemistry
to drbob222: the book says that the naclo grams are equal to 2.4. how did they come up with that from the Henderson hesselbalch equation?
asked by sam 
Literature 1010
Papers that are inadequately developed often contain repetition and wordy generalities
asked by Alex 
physics
1)The increase in potential energy of any system is equal to the output ___. I still have no idea. 2) The path that an object follows as it is raised does not affect the ___ of the object. Could it possibly be "final kinetic energy"?
asked by Kriti 
calculas
Hydrocodone bitartrate is used as a cough suppressant. After the drug is fully absorbed, the quantity of drug in the body decreases at a rate proportional to the amount left in the body, with constant of proportionality . Suppose that the halflife of
asked by calculas 
Math
adding (1/4x^21/6x3/8)+(1/4x^21/4x1/2)
asked by Jackster 
physics
When you take your 1000kg car out for a spin, you go around a corner of radius 57 m with a speed of 11 m/s. The coefficient of static friction between the car and the road is 0.88. Assuming your car doesn't skid, what is the force exerted on it by static
asked by Randy 
Calculus 12th grade (double check my work please)
2 given the curve is described by the equation r=3cos ¥è, find the angle that the tangent line makes with the radius vector when ¥è=120¨¬. A. 30¨¬ B. 45¨¬ C. 60¨¬ D. 90¨¬ not sure A or D 2.) which of the following represents dy/dx when
asked by anon 
stats
you are given the probabilities listed below P(A)= 0.25, P(B) = 0.30, P(C)=0.55, P(A&C) = 0.05, P(B&C)=0, P(B/A)=0.48. A) ARE A AND B INDEPENDENT? B) FIND P(A&B) C) FIND P(A OR B) D) FIND P(A/B) E) ARE B AND C MUTUALLY EXCLUSIVE EVENTS? F) ARE B AND C
asked by Anonymous 
math
solve each equation n^216=0
asked by Anonymous 
Calculus
Find the derivative of f(x)=e^(sin(1))+(sin(1))^x
asked by Abigail 
Chemistry
Iron is obtained from iron ore according to the following reaction: Fe2O3+CO> Fe+CO2 (unbalanced). a. Assuming the blast furnace is 90.0% efficient in recovering the iron, what is the actual mass of iron obtainable from a ton of ore? b. What is
asked by K 
Math
There are 256 students in this outstanding 7th grade class. How many scoops of ice cream would have to be used in each cone in order to make a different cone for each person?
asked by Tina 
maths
a pyramid has a spuare base with side length 20.a right circular cylinder has a diameter of 10 and a length of 10.the cylinder is lying on its side,completely inside the pyramid.the central axis of the cylinder lies parallel to and directly above a
asked by jo 
Chemistry
What are 3 possible reasons why a percentage recovery might be low? And what are 3 possible reasons why a percentage recovery might be well over 100%?
asked by K 
Trigo
From a window of a building A, the angle of elevation of the top of building B is 35 degrees and the angle of depression of the bottom of building B is 20 degrees. If the buildings are 25m. horizontally apart, Compute for height of the window from the
asked by Elmo 
computer Science (need answer ASAP)
Write a complete C# program that displays a menu comprising of the followings: Main Menu 1) Calculate Fuel Consumption 2) Calculate Weekly Wages 3) About This Program 4) Exit Program Enter your Choice: Calculating Fuel Consumption When the user chooses
asked by Will 
sociology
what sociological pattern of influences might encourage a person to cheat or prevent them from cheating
asked by Anonymous 
geology
Given a scale of 1:24,000: A. What is the ground distance in feet represented by three inches on the map? 72000in 6000ft B. What is the ground distance in meters represented by 5 cm on the map? 120meters C. How about the ground distance in kilometers
asked by karen 
MATH
Wendy answered 85% of the questions on her history test correctly. There were 40 questions on the test and all the questions had equal value. How many questions did Wendy NOT answer correctly on her test?
asked by PLEASE HELP 
Algebra/geometry
a rectangle has a width of 4 cm less than it's length. if a new rectangle is formed by increasing the width 5 cm and decreasing the length 3 cm, the area of this resulting rectangle is 177 cm squared. what are the dimensions of the original rectangle?
asked by Bill 
physic
anyone can suggest a method to determine specific heat of nonvolatile liquids?
asked by yuss 
Math
What is the shape of the schoolyard if four sides measure 40feet each and the fifth side measures 50 feet?
asked by Melissa 
college subjeet physics
a100 grams bullets is fired from a 10kg gun with a speed of recoil of the gun
asked by ayesha khan 
business ethics
Ethics systems table
asked by rob 
Physics
A driver entering the outskirts of a city takes her foot off the accelerator so that her car slows down from 90 km/h to 50 km/h in 10 s. Find the car's average acceleration.
asked by Emily 
Chemistry
Hi DrBob, Sorry about that, I wasn't very clear! Can someone please help me complete these calculations for my lab; I am having some trouble. A. Standardization of Na2S2O3 Mass of KIO3 in 100mL = 0.09600g Calculate Molarity of KIO3= ? Please check:
asked by Bryant 
physics
A truck sounds its 810 hz horn as it drives outside a house at 30mph. But the occupant's ear detects a frequency of 780hz. What is the temperature of the air at this location?
asked by steve 
Algebra
GoCarts You and three of your friends are going to race gocarts. The last time you went, you had a coupon for $3 off each admission and paid $48 for the 4 admissions. What was the total price without the coupon? You pay the regular price this time and
asked by Vanessa 
marketing
Identify the strategy decisions a marketing manager must make in the Price area. Illustrate you answer for a local retailer.
asked by Monica 
Chemistry
Determine the density (in g/mL) of a liquid given: A beaker was weighed at 90. g, then 413.5mL of liquid was added and the new weight was 795 g.
asked by Oscar 
Chemisty
The Specific heat of a substance is the energy (joules) required to raise one gram of substance by one degree celsius (units J/g °C). Heating 225.0 cm3 of a solid from 36.1 °C to 74.3 °c takes 35850 J of energy. The density of the solid at 36.1 °C is
asked by Oscar 
MATH
is there anyway that a diagram or something can be drawn or pasted into the question box for a math problem?
asked by Gemma 
PHYSICS
A box is lifted with a pry bar, by slipping the bar under the box and lifting up on the bar. If the pry bar is 2m in length and it is grasped at the end, and the box is located at the opposite end, the fulcrum, with its center of gravity at a distance of
asked by DMITRIC 
Chemistry
13.1 + (19.32  8) = ? I know the answer is 24.42 but it says the answer has to be to the correct number of significant figures. so would that make it 24.5 or have I got that wrong
asked by Oscar 
physics
how high does a stone rise if it initially thrown at a rate of 15m/s?
asked by Tesfaye 
Chemistry
13.1 + (19.32  8) = ? I know the answer is 24.42 but it says the answer has to be to the correct number of significant figures. so would that make it 24.5 or have I got that wrong
asked by Oscar 
chemistry..
to drbob222 ok, the pka (hclo) = 7.54 the ph = 7.35 this problem was under "preparing a buffer" section
asked by sam 
geometry
Can you prove ABCD is a parallelogram based on the given information? Explain. Given: x = 5, y = 4 Prove: ABCD is a parallelogram. A. The figure is a square. To be a parallelogram, it would have to have pairs of opposite congruent sides, not just congruent
asked by Kate 
Chemistry
13.1 + (19.32  8) = ? I know the answer is 24.42 but it says the answer has to be to the correct number of significant figures. so would that make it 24.5 or have I got that wrong
asked by Oscar 
Geometry
Given circle A with circumference 20 pi and the length of arc KD equal to 10/3 pi. Find the area of the shaded region. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Is there any way I can post a diagram?
asked by Gemma 
world history
what was the reason for expansion of slave trade in the 17th century?
asked by Tesfaye 
chemistry
NH3(aq)+N2H4(aq)>.....?
asked by pepy 
English! Pleease help
Hey guys this is about my previous question: I have trouble finding two texts that DISPLAY intolerance against gender, sexual activity, race/culture, disabled people etc. So, for instance a poem about the hatred for black people or the way the a 'Ku Klux
asked by Shivi 
The world History
does anyone know the question to exam 007681 & 007682
asked by Peggy 
chemistry
poem of chlorine
asked by Anonymous 
Maths
Basically there is this graph with the equations: x = cos t + 2 sin t and y = sin 2t (o
asked by Jennifer 
English
I'm finding it difficult to correct these sentences. I hope you can help me check them.Thank you. 1)In 19thcentury the greater part of black slaves was born in America though they were originally deported from West Africa. 2)They worked for white people
asked by Mike 
chemistry
What is the hybridization of trioxo nitrate v ions ?
asked by adebayo 
physics
A 5g marble, released form rest, was allowed to roll on a ramp whose lower end is 25 cm from the floor. When it left the ramp, it behaved like a body in projectile motion. What was the horizontal velocity of this marble when it left the ramp? With what
asked by kik 
math
a rectangle has a perimetr of 30m, if the length is at least twice the width,find the range of possible values of the width of the rectangle.
asked by me 
math
Michel wants to buy his mother handmade chocolates for Mothers Day. He has $15.oo to spend. The price of each chocolate is given below. Fudge $0.60 NutClusters $0.75 Truffles $0.80 Determine 4 possible combination where the total cost is 14.80 please help,
asked by Vanessa 
diversity
The instructional strategy that works best to give a child from a culturally different background a sense of security and mastery is
asked by Anonymous 
science
a worker pushes a box with a horizontal force of 50 N over a level distance of 5m. If a frictional force of 43 N acts on the box in a direction opposite to that of the worker, what was the net work done to the box?
asked by KayKay 
critical thinking
have a critical spirit means one is a cynic
asked by Anonymous 
critical thinking
critical thinking habits of mind are always postive
asked by Anonymous 
Finance
if an investor is contemplating purchasing longterm securities,what are the factors he/she should take into consideration in selecting among government bonds,semi government bonds or corporation bonds?
asked by baoni 
computer fun
My sister has no websites to go to for fun.She is 10 so what do you suggest?
asked by Joe 
critical thinking
calling on people to be systematic means that everyone must think the same
asked by Anonymous 
critical thinking
peolpe with strong anayticity are able to forsee the consequences of options and events
asked by Anonymous 
trig
with its arm fully extended to a length of 16ft, the maximum height that a man lift can reach is 18ft. The lowest height is 4ft, what is the position where the arm of the lift is horizontal. a) if a man gets on the lift and the arm is lifted through an
asked by christianah 
accounting
please help to get the correct of questions beloww..thanks i hope you can help me thanks ang god bless you always. 1.the costbenefit constraint 2.importance of financial accounting 3.explain nuetrality and how can you say if an accounting information is
asked by jessie 
geometry
Circle O above has a circumference of 240 cm and arc XW has a length of 60 cm. What is the measure of the central angle associated with arc XW?
asked by jake 
Math
Find the probability of: a) Rolling a three OR a six with a single die Answer: P(3 U 6)= n(3U6)/n(S) = 3+6/6 = 9/6 reduced: 3/ b) Dealing an ACE OR a FACE CARD from a standard deck Answer: P(A U F)= 4/52 + 12/52 = 4/13 2. A 5committee is to be chosen from
asked by Jacob 
spanish
In our own national Capitol, many homes now are owned by foreign governments for their ambassadors homes and offices.
asked by griffin 
history
i) who built first sarai ii) custom house is
asked by prabhpreet singh 
Math
There are 7 notes of "A" on a standard piano. When the first A is struck, the string associated with the key vibrates 55 times per second. The next A above the given A vibrates twice as fast. An exponential function with a base of two is used to determine
asked by Anonymous 
Algebra
Gloria has a gallon of paint to cover 500 square feet of drywall. She pointed out that for 10,000 square feet she needs 20 gallons of paint. Let's say the output (the range) is going to tell us how many gallons of paint to buy at the hardware store. The
asked by Jada 
Statistics
A fair 20sided die is rolled 60 times, and the value of chisquare is computed using expected counts of 3 for each face. If this process is repeated many times, the shape of the distribution of the values of chisquare should be... A uniform B bimodal C
asked by Graciela 
History
Can someone please help me with these four questions? My first is to discuss a little about American Imperialism in the Nineteenth Century. My second question, why was this policy adopted? My third question, how was it rationalized? My fourth question is
asked by David 
Advance Finance
The Howland Carpet Company has grown rapidly during the past 5 years. Recently, its commercial bank urged the company to consider increasing its permanent financing. Its bank loan under a line of credit has risen to $250,000, carrying an 8 percent interest
asked by Kim 
accounting
please help me to get the answers choices below just choice the letter provied. thanks a lot 1.Asset would be increased by : a.Debit to Prepaid Insurance b.Debit to expense c.Credit to Cash d.Debit to Notes Payable 2.Failure to record a bill from Meralco
asked by jessie 
accounting
Capwell Corporation uses a periodic inventory system. The company's ending inventory on December 31, 2011, its fiscalyear end, based on a physical count, was determined to be $326,000. Capwell's unadjusted trial balance also showed the following account
asked by kay 
Physics
Cart A, of mass 3.00 kg, approaches and collides with cart B, which has a mass of 7.00 kg and is initially at rest. When the springs have reached their maximum compression, a. cart A has come to rest relative to the ground. b. both carts have the same
asked by Ana 
choice
Making responsible choice for healthy and balanced lifestle
asked by Brightness 
Physics
A heavy rifle initially at rest fires a light bullet. Which of the following statements about these objects is true? A. The bullet and rifle both gain the same magnitude of momentum. B. The bullet and rifle are both acted upon by the same average force
asked by Ana 
Physics
Suppose a crate of mass 2.8 kg is placed on the plank in the figure below at a distance 5.1 m from the left end. Find the forces exerted by the two supports on the plank. (The mass of the plank is 12.0 kg.) Left Support N Right Support N The plank set on
asked by lala 
world history ap
Tomorow I have a dbq essay due to my teacher he is mainly concerned about our thesis statment.The question is What are Han and Roamn attitudes towards technology?he wants 1 sentence with three attitudes .help????
asked by maxii 
english
i need help with this english essay i'm writing. I need help finding some pathos, ethos, and logos for the book lord of the flies.
asked by Carrie 
history
rationale for imperialism in the era 1890–1910 included all of the following ideas EXCEPT: A. American ideas and institutions were superior to those of inferior nations. B. the United States needed a vast buffer zone to offset communist expansionism. C.
asked by sharice 
geometry regular polygon
a=? s=10.5cm A= 19,887.5cm squared Pentagon A=asn/2 19,887.5cm=a*10.5*5/2 39775=52.5a a=757.61cm? am i correct? regular nonagon a=9.6cm A=302.4cm squared find perimeter thanks!
asked by Skye 
Density of a CUSO4 solution
I need to determine the density of a CUSO4 solution of 1% concentration from a 10cc pipette volume.
asked by Lorraine 
history
i) who first built sarai ii) custom house is
asked by anonymous 
chemistry
calculate the % (w/v) for the following solution: 28.0 g of solute is dissolved in 200.0 ml of water to give the solution with a density of 1.10 g/ml
asked by ned 
Industrial Hygene
What volume will 73 g of dry ammonia gas occupy at 11 degrees C and 720 mm Hg? How much air is needed to dilute the ammonia to 10 ppm ?
asked by CCBC 
physics
Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 4.00 s. If the magnitude of the momentum of the lighter cart after the push is P, the magnitude of the momentum of
asked by Ana 
math
Write the number in scientific notation. 89,000,000,000 A 4minute egg is cooked for what fraction of an hour? (1 hour = 60 min)? ADD 4 7/9+ 5 2/9 Erika spent 5/6 hr on her computer visiting the history channel and the discovery channel websites. She spent
asked by Anonymous 
calculus
if the region enclosed by the yaxis, the line y=2 and the curve y=the square root of x is revolved about the yaxis, the volume of the solid generated is????
asked by bob 
Density of CUSO4
How can I find out the mass measurement?
asked by Lorraine 
history
Who tended NOT to sympathize with the Allies in the first years of the war? A. President Wilson and most of his advisers. B. GermanAmerican immigrants. C. Those who felt closer cultural ties with British and French culture. D. Americans who felt a closer
asked by sharice 
math
Tim needs to apply 21/2 gallons of herbicide per acre of soybeans. How many gallons of herbicide are needed for 360 acres? A worker has readings that take 22/3 minutes each to read and record. How many readings can be completed in 192 minutes? A grocer
asked by BUBBA 
calculus
integrate xsin(2x)dx=
asked by bob 
Chemistry
A sample of air has a volume of 140.0 mL at 67 degrees Celsius. At what temperature would its volume be 50.0 mL at constant pressure?
asked by Nick 
Density of CUSO4
How do I find out the mass measurement?
asked by Lorraine 
Business Writing
What comes first the business letter, the interoffice memorandum or the email
asked by Sheila 
Chemistry
The pressure exerted on a 240.0 mL sample of hydrogen gas at constant temperature is increased from 0.428 atm to 0.724 atm. What will the final volume of the sample be?
asked by NDC 
math
array for 46x 25
asked by Anonymous 
Density of CUSO4
I don,t know if this helps but the Soln of CUSO45H2O is 1%, the mass solution is 100g and the mass of CUSO4 5H2O is 1g.
asked by Lorraine 
Calculus 1
A given figure shows a rectangle inscribed in an isoceles right triangle whose hypotenuse is 18 units long. Express the y coordinate of P terms of x
asked by Anonymous 
history
Before the SpanishAmerican War, yellow journalism: A. endorsed a policy of isolationism. B. wrote editorials that criticized American imperialism. C. refused to write about foreign affairs. D. used sensationalism to stir up war fever. I think the answer
asked by sharice 
algebra
Factor 2x squared minus 5x minus 3.
asked by sam 
algebra
In base 5, how many two digit numbers are there?
asked by john 
Genetics
Question 11 (1 point) Save As the degree of relatedness within a population increases, the level of inbreeding in that population also increases. As relatedness and inbreeding go up, individuals become more similar genetically and therefore genetic
asked by Rachel 
physics
A 13 N horizontal force pushes a block weighing 4.5 N against a vertical wall (Fig. 626). The coefficient of static friction between the wall and the block is 0.68, and the coefficient of kinetic friction is 0.35. Assume that the block is not moving
asked by karim 
physics
In an auto accident, a car hit a pedestrian and the driver then slammed on the brakes to stop the car. During the subsequent trial, the driver's lawyer claimed that the driver was obeying the posted 35.0 mph speed limit, but that the limit was too high to
asked by mary 
computers
What do you think would be the best way to use Flash when designing your website if you were going to use it?
asked by Anonymous