Questions Asked on
October 3, 2015

Physics
It is friction that provides the force for a car to accelerate, so for high performance cars the factor that limits acceleration isn't the engine; it's the tires. For typical rubberonconcrete friction, what is the shortest time in which a car coukd
asked by Lane 
statistics
The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is 30 hours and the median is 26.2 hours. Twentyfour of the families in the sample turned on the television for 15 hours or less
asked by Anonymous 
Physical Chemistry
A saturated solution of Na2SO4, with excess of the solid, is present at equilibrium with its vapor in a closed vessel. (a) How many phases and components are present? (b) What is the number of degrees of freedom o the system? Identify the independent
asked by Jessica 
physics
When landing after a spectacular somersault, a 40.0 kg gymnast decelerates by pushing straight down on the mat. Calculate the force she must exert if her deceleration is 5.00 times the acceleration of gravity.
asked by andrew 
Science
I need some help, this is fairly confusing to me. ______ Allows traits favorable for survival to be passed from parents to offspring. I could not find the answer to this in my textbook, any help?
asked by Bluue 
Chemistry
A 250 g sample of water with an initial temperature of 98.8 c loses 7,500 joules of heat. What is the final temperature of the water ?
asked by Raul 
Chemistry
What is the minimum amount of 6.6 M H2SO4 necessary to produce 22.6 g of H2 (g) according to the following reaction? 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g) I need to find the volume of the H2SO4 Work: 22.6g H2 /2.008g H2 = 11.3 mol H2 11.3 mol H2 *
asked by Finn 
college algebra math help
Laura owns and operates Aunt Linda's Pecan Pies. She has learned that her profits, P(x), from the sale of x cases of pies, are given by P(x) = x^2 + 14x + 51. a. The company will "breakeven" when the profit is zero. How many cases of pies should Laura
asked by Anonymous 
math
When the movie is half over, popcorn sells for half price. Full price popcorn is $3.50, and drinks are $1.35. Determine the cost for purchasing 3 orders of popcorn and 3 drinks when the movie is half over. $
asked by james 
Career
23. Few, if any skills can be used in more than one job situation. True False *** 24. It is possible to have some skills that you do not actually enjoy very much. True *** False 25. When talking about job skills, the letters TIP stand for Things, Ideas and
asked by Labbayk 
Pre Algebra
Which special version of the Pythagorean Theorem can you use to find the length of any square's diagonal, d, using only the length of its side, s? plz tell me the equation!!!
asked by Labbayk 
Physics
A person 1.90 m tall walks on a horizontal icy surface. The coefficient of friction between the surface of the ice and the person's shoe sole is μ = 0.33 and the length of the person's legs are 1/2 of the person's height. Determine the maximum step length
asked by Jacob 
PHYSICS
forces of 3N and 4N and 12N act at a point in mutually perpendicular directions. Tha magnitude of the resultant force in newton is
asked by Sreethi 
Physics
A large centrifuge is used to expose aspiring astronauts to accelerations similar to those experienced in rocket launches and atmospheric reentries. a) At what angular velocity is the centripetal acceleration 10 gs if the rider is 10.0 m from the center of
asked by Anonymous 
English IIB
It takes both bravery and selfsacrifice to be a hero. Heroes have the inner strength to stand up for their beliefs, even in the face of danger. Those who fight for a just cause may not always triumph in the end, but a hero will always triumph in spirit.
asked by nereyda 
CHEMISTRY !!!
What is the pH of a 0.16M KHSO3 solution at 298 K? a. 4.41 b. 1.31 c. 7.00 d. 1.82 e. 3.89 I did the calculations and my answer came out to be 3.89 but apparently the answer is 4.41. Can anybody explain why ? Thnx in advance
asked by Owen 
stats
Katie must take five exams in a math class. If her scores on the first four exams are 77, 79, 95, and 93, what score must Katie get on the fifth exam for her overall mean to be at least 80? The maximum score on an exam is 100 points. If it is not possible
asked by alicia 
math
A construction crew has just finished building a road. The road is 10 kilometers long. If the crew worked for 4 2/3 days, how many kilometers of road did they build each day? (Assume they built the same amount each day.) Write your answer as a mixed number
asked by Joy 
Algebra
Yazmin decided to get some exercise by taking the stairs from the first to the fifth floor in her apartment building. The first time she went up the entire flight, she walked up some steps and ran up 16 steps. This took a total of 60 seconds. The second
asked by Mary 
Algebra
1. Which number is equivalent to 0.3 (with a line above it)? A 1/3** B. 33/100 C. 5/6 D. 2/3 2. Jessica went to the mall and used 1/6 of her money on lunch. What is the fraction of her money expressed as a decimal? A. 0.6 (line above the 6) B. 0.7 (line
asked by Shi Buringa 
Physics
A 360 g model rocket is on a cart that is rolling to the right at a speed of 2.5 m/s. The rocket engine, when it is fired, exerts an 8.5 N thrust on the rocket. Your goal is to have the rocket pass through a small horizontal hoop that is 20 m above the
asked by Anonymous 
Physics
You testify as an expert witness in a case involving an accident in which car A slid into the rear of car B, which was stopped at a red light along a road headed down a hill (Fig. 1). You find that the slope of the hill is Ɵ = 120 , that the cars were
asked by Jo 
Physics
The electric field at a distance of 0.150 m from the surface of a solid insulating sphere with radius 0.367 m is 1720 N/C . Assuming the sphere's charge is uniformly distributed, what is the charge density inside it? Calculate the electric field inside the
asked by jj 
Criminal Justice/White Collar Crime
Certain industries are distinguished by means and opportunities that are conducive to crime. These factors include all of the following EXCEPT: A. large amounts of money changing hands. B. individual decisionmaking. C. public attention on business
asked by Pat 
Algebra
A luxury car rental company charges $150 per day in addition to a flat fee of $50 for insurance. Write an equation that represents the cost, f(x), (in dollars) to rent the car for x days. This equation should be in slopeintercept form.
asked by Sarah 
algebra
Solve A=1/2bh for h
asked by Susie 
psychology
example of backward conditioning, not the one pavlov and watson gave.
asked by conditioningkoon 
Physics
Plz, i need the workings. An object is acted upon by two forces of 5N and 12N. Calculate the resultant of two forces if the forces acting perpendicular to each other
asked by Benjamin 
physics
The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows down uniformly with acceleration −5.80 m/s2 for 4.20 s, making skid marks 57.2 m long that end at the tree. With what speed does the truck then strike the
asked by kdberg 
Poems
I have to write a poem about Christopher Columbus and the tano's and I'm really stuck :( please help :( Christopher Columbus: My name is Columbus. I had my first voyage in fourteenninety two. I sailed across the ocean, big and blue. With my three ships,
asked by Shalee ^~^ 
Chemistry
Determine if the ffg are strong, weak, nonelectrolytes: Sulfuric acid  strong? Potassium hydroxide  strong? Carbonic acid  strong? Propyl amine  weak? Potassium iodide weak? Ethanol  strong ? Glucose  nonelectrolyte? am i right?
asked by ELECTROLYTES! 
sciece
what happens to cells formed by meristematic tissue ? diffrent between simple and complex permanent tissue.
asked by shehzad 
Chemistry
What is the molarity of Cu2+ in a catalyzed reaction using 3 drops of CuSO4 at .03M in 50.0ml, and what is the molarity of Cu2+ using 6 drops? (Consider the extent of dilution of the 0.1 M CuSO4 solution in preparing the 50 mL reaction solution. Estimate
asked by Jim 
psychology
example of delayed conditioning, not the one pavlov and watson gave.
asked by conditioningkoon 
Physics
1) A box m1 = 9.30 kg is stacked on top of another box m2 = 20.0 kg, placed on the floor inside an elevator. When the elevator is accelerating downward with a magnitude of 3.72 m/s2, what is the normal force that box m1 exerts on box m2? What is the normal
asked by Mike 
FIN/370
If a firm buys on trade credit terms of 1/10, net 45 decides to forgo the trade credit discount and pay on the net day, what is the annualized cost of forgoing the discount (assume a 360day year)? The annualized cost of the trade credit terms of 1/10, net
asked by monica 
Chem
copper sulfate reacts with sodium hydroxide producing copper hydroxide and sodium sulfate.. If sodium hydroxide is the limiting agent how many grams of copper hydroxide should precipitate out?{There are 634.44 g of copper sulfate and 240 grams of sodium
asked by Steve 
Chemistry
copper sulfate reacts with sodium hydroxide producing copper hydroxide and sodium sulfate.. If sodium hydroxide is the limiting agent how many grams of copper hydroxide should precipitate out?
asked by Steve 
Economics
My homework question says " what is the opportunity cost of good x in term of y, when production is shifted from point b to c along the pcc?" For b the x axis is on 40 and the y axis is at 75. So the opportunity cost will be 35 For c the x axis is 70 and
asked by Pavleen 
Science
If 5gm KClO3 is decomposed to form KCl and O2. What is the percentage yield of reaction if 1.25 gm of O2 is produced??
asked by Soumoyjit 
science
to find the height of a bridge over a river. a stone is dropped freely in the river from the bridge.the stone takes 2s to touch the water surface of the river. calculate the height of the bridge from the water surface (g=9.8 m/s
asked by shehzad 
Biology
a. A human cell is placed in a container of sugar water. Explain what would occur, if the cell membrane is impermeable to sugar. b. Another cell is placed into a container of sugar water. However, this cell has the capability to allow large molecules such
asked by Eliza 
HELP HELP ap biology
field of view for 1000x total magnification is it .2 micrometers? help!
asked by Anonymous 
Algebra
Write the equation of the line that contains the indicated pair of points. Express the final equation in standard form. (Objective 3) (−3, 1) and (9, −3)
asked by April 
Math
I need help with this problem: Circle the number closest in value to 10.1 a. 9.9 b. 9.909 c. 10.99 d. 10.5
asked by Tommy 
math
six lettered tiles are drawn from a bag and placed in a row .if 3 tiles have 3 x's and 3 have o's.find the probability that no 2 adjacent tiles have the same letter?
asked by nelushi 
physics
A metal ball is thrown vertically upwards from the top of a tower with an initial velocity of 20 metres per seconds. If the ball took a total of 6 seconds to reach ground level, determine the height of the tower.
asked by anonymous 
wcience
calculate the ratio of momentrum when (a) velocity of an object is doubled (b) mass of an object is halved (c) both mass and velocity are increased by three times
asked by shehzad 
Gr.11 Biology
In humans, muscular dystrophy is a condition in which the muscles waste away during early life, resulting in death in the early teens. It is due to recessive seclinked gene. A certain couple have 5 children 3 boys, ages one, three and ten; and 2 girls,
asked by Helen 
math
In a friendship basket, 2 out of every 5 roses are pink. If there are 6 pink roses, how many total roses are in the bouquet
asked by bryanna 
algebra
Solve y=kx for k
asked by John 
Social Studies
1)Marco Polo wrote an account of the marvels of: The Americas Venice Asi!@#$%^&* Spain 2)Which man and his army conquered Peru? Francisco Pizarro*** Atahualpa Hernan Cortes Montezuma 3)Traders who established rights to the Canadian fur trade were: Spanish
asked by Shalee ^~^ 
Chemistry
Aldol Condensation What might be the result if you did not add enough Hydrochloric acid and the final pH remained about 7? Yield would likely increase and the purity of the product would increase Yield would likely decrease and the purity of the product
asked by Ash 
psychology
example of simultaneous conditioning, not the one pavlov and watson gave.
asked by conditioningkoon 
physics
A w1 = 255 N bucket is lifted with an acceleration of a = 2.00 m/s2 by a w2 = 105 N uniform vertical chain. A.Find the tension in the top link of the chain. B.Find the tension in the middle link of the chain. C.Find the tension in the bottom link of the
asked by Anonymous 
I need Help!!!
Write the equation of the line that contains the indicated pair of points. Express the final equation in standard form. (−3, 1) and (9, −3)
asked by April 
Integration need help also
Integrate sinx^2.xdx???
asked by Anonymous 
science
why does (second ) square occurs in the unit of acceleration
asked by shehzad 
science
23g of salt is dissolved in 100g of water at 23 k. what is the concentrarion of solution at this temperarure.
asked by shehzad 
general
how to write 02october2015 in 5 letters without using numbers?
asked by ayyappa 
Gr. 11 biology
Your aunt moves out of the town and leaves you her mouse, Henry. In order to make some money, you decide to breed mouse and sell the offspring. In looking over Henry's family history, you discover that Henry's grandfather expressed a rare genetic disorder
asked by Helen 
science
calculate the ratio of momentrum when (a) velocity of an object is doubled (b) mass of an object is halved (c) both mass and velocity are increased by three times
asked by shehzad 
Career
4. Scott just started a new job that requires many of the same organizational and communication skills as his last job. These skills are Scott's: Big Five. Career types. Transferable skills. *** Type indicators. 13. All of the following traits contribute
asked by Labbayk 
Tourism Life Science History Maths Literacy
I'm doing this subject but in the mean time I want to go to Collage and right now I don't know what to choose time is running out becouse I'm in Grade Eleven
asked by Thando 
Math
 32  7 So I did in the absolute value first 5 7 57= 2 Is this correct? Thank you
asked by Sara7 
algebra
Solve P=2l+2w for w
asked by Michael 
organic chemistry
how many atoms are there in 42.2g of sulfur divided by 1.0x10 to 23
asked by glenna 
Physics
Figure Ex5.7 shows the velocity graph of a 5.0 kg box as it pushed to the right (>) along a horizontal surface. Assume that a 12 newton friction force acts on the box to the left () acting push on this object at the given times? t=2 N=? t=7 N=?
asked by ames 
Math(Dynamics)
To find the time taken by a planet to describe a given arc of its elliptic orbit starting from the nearer and of the major axis.
asked by Siddhartha Sankar Roy 
Maths division jus xo confused need help plz
If 2^2011 is divided by 13 what is the remainder???
asked by Collins 
Prove that sin(A+B)
Show that sin(A+B)=sinAcosB+sinBcosA... diagram can be use if necessary
asked by Collins 
Prove that sin(A+B) need help
Show that sin(A+B)=sinAcosB+sinBcosA... diagram can be use if necessary????
asked by Collins 
Integration need help
Integrate (6x^2cos(2x))dx??
asked by Collins 
math
if the wall is 8 2/5 high and 18 1/3 long how do I calculate how much square foot is painted blue if 1/2 is painted?
asked by denise 
science
combination of which two tissue. is responcible for movement in humans
asked by shehzad 
science
what is the mometum of a mass 75 kg when he moves with a velocity of 2m/s
asked by shehzad 
Calculus
The revenue for a sale of x books at $70 each is given by R(x)=70x. The commission for a revenue of x dollars is given by C(x)=.20x. Express the commission as a function of the number of books sold.
asked by Suzanne 
stats
With the help of following data, determine both the regression equations Psychology (X): Mean= 30, Standard deviation=1.6 Sociology (Y): Mean= 25, Standard deviation= 1.7 Coefficient of correlation = 0.95
asked by arti 
math
Could someone help me solve this Absolute Equation? Please? I would really appreciate any help... Question~~ Evaluate the given expressions when a = 3, b = 3, c = 4, and d = 1 (a/c)c + b – d
asked by Abby 
algebra1
6 + x/8 = 4/7 what does x =
asked by tom 
Social Studies
Ok so I'm supposed to write how the Europeans felt when they found America and how the Taino (the Indians that were originally there)felt about what happened, and I'm kind of stuck.
asked by Shalee ^~^ 
science
How to cal. The range of π+arcsin(3x4x^3).give the whole solution step wise
asked by RALLZO 
calculus need help
use the first principle to obtain the differencial coefficient y=1/(2x1)
asked by collins 
calculus i need help also
If y=2x^221x^2+60x+6 what is the value of x? dx^2/dy^2=0
asked by collins