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Questions Asked on April 27, 2013

A sample of argon gas at STP occupies 56.2 liters. Find the number of moles of argon and the mass in the sample
1. 3 answers
2. asked by Emily
3. 27,527 views
2. At time t =0, the current to the dc motor is reversed, resulting in an angular displacement of the motor shaft given by θ =
1. 4 answers
2. asked by bruce
3. 10,172 views
If a basketball player consistently shoots 80% from the free throw line and she takes 25 free throw shots throughout the course
1. 3 answers
2. asked by joyce
3. 6,644 views
A spring oriented vertically is attached to a hard horizontal surface as in the figure below. The spring has a force constant of
1. 2 answers
2. asked by Abdul
3. 6,297 views
Which of the following pairs of terms identify spaces that are roughly PERPENDICULAR (orthogonal) in the human brain (give or
1. 4 answers
2. asked by Anonymous
3. 3,613 views
To determine the number of trout in a lake, conservationist catches 161 trout, tags them and throuws them back into the lake.
1. 2 answers
2. asked by pam
3. 3,213 views
A pair of in-phase stereo speakers is placed side by side, 0.85 m apart. You stand directly in front of one of the speakers, 1.1
1. 1 answer
2. asked by Meder
3. 2,770 views
Calculate the percent ionization of 0.140 M lactic acid in a solution containing 8.5×10−3 M sodium lactate.
1. 1 answer
2. asked by John
3. 2,637 views
A reservoir is in the form og the frustum of a cone with upper base of radius 8ft and lower base radius of 4 ft and altitude of
1. 3 answers
2. asked by Light
3. 2,620 views
A Martian rover is moving up a hill sloped at 30.0° with the horizontal. If it has a constant velocity of 1.50 meters/second,
1. 1 answer
2. asked by dddddd
3. 2,583 views
A long distance trucker traveled 240 miles in one direction during a snow storm. The return trip in rainy weather was
1. 1 answer
2. asked by nannypam
3. 2,333 views
19. A family takes a car trip. They travel for an hour at 80 km/h and then for 2 hours at 40 km/h. Find the average speed.
1. 1 answer
2. asked by June
3. 2,129 views
if 1,x,y is a geometric sequence and x,y,3 is an arithmetic sequence, compute the maximum value of x+y
1. 3 answers
2. asked by Sarah
3. 2,002 views
In a bag of candy, there are five green candies for every two red candies. If there are 35 total candies in the bag, which of
1. 2 answers
2. asked by rally
3. 1,800 views
A Body with a mass of 150kg is located at a height of 45 m. If allowed to fell freely to the ground. What will be its velocity
1. 2 answers
2. asked by Danny
3. 1,618 views
The percent of fat calories that a person in America consumes each day is normally distributed with a mean of 36 and a standard
1. 0 answers
2. asked by luke
3. 1,488 views
One fourth of herd of goats was seen in the forest. Twice the square root of the number of the herd had gone up the hill and the
1. 2 answers
2. asked by Steve
3. 1,468 views
<11{7[2(03)79]}> Looking to increase the profits of his lemonade stand, Johann doubled the price of a cup of lemonade from 25
1. 0 answers
2. asked by Donna
3. 1,386 views
I toss a coin 4 times. Find the chance of getting the sequence HTHT
1. 2 answers
2. asked by adex
3. 1,293 views
The half-life of is 30.0 days. What fraction of a sample of this isotope will remain after 16.2 days?
1. 2 answers
2. asked by sarah
3. 1,205 views
Which of the following will increase the strength of a sample of 90% SiO2 - 10% MgOQuench the entire sample in water Quench half
1. 3 answers
2. asked by Anon
3. 1,158 views
an electron above the earth is balanced by the gravitational force and the electric field of the earth. find the electric field
1. 2 answers
2. asked by priya
3. 1,146 views
Provise five or more ways in which you critically discuss how lack of physical fitness and proper nutrition impacts on a
1. 1 answer
2. asked by charlene
3. 1,139 views
Suppose x has a mound-shaped distribution with sigma = 9 . A random sample of size 36 has sample mean 20. Is it appropriate to
1. 1 answer
2. asked by Steph
3. 1,132 views
IF the speed of train A is 10 mph slower than train B. Train A travels 220 miles in the same time it takes train B to travel
1. 1 answer
2. asked by nannypam
3. 1,095 views
solve the point given below is on the terminal side of an angle0. find the exact value of the six trigonometric functions of 0.
1. 1 answer
2. asked by Anonymous
3. 1,091 views
<11{5[1(01)57]}> Arthur: The solutions to most mystery novels I read are not believable. However, my enjoyment of a mystery
1. 0 answers
2. asked by Donna
3. 1,072 views
<7{6[3(02)66]}> In a survey of 10 film historians, half voted for Nosferatu as the greatest vampire film ever made, and the
1. 1 answer
2. asked by Donna
3. 1,070 views
11{2[3(11)35]}> Some politicians claim to support the environment in speeches they make around the country. However, to get to
1. 0 answers
2. asked by Donna
3. 1,067 views
If a 20-sided fair die with sides distinctly numbered 1 through 20 is rolled, the probability that the answer is a perfect
1. 3 answers
2. asked by Hale
3. 1,036 views
Estimate the fraction of of unoccupied atomic sites in lead (Pb) at a temperature 10K below its melting point.DATA: Vacancy
1. 2 answers
2. asked by ssss
3. 1,027 views
Andrew measures they amount of a very unstable substance to be 100 moles. the half life of this substance is 3 days(after 3
1. 2 answers
2. asked by Anonymous
3. 1,018 views
Follow-on from a previous question: is there a component of any vertical force resulting from the braking force a braking
1. 0 answers
2. asked by Raymond
3. 1,016 views
Given the function: f(x) = x^2 + 1 / x^2 - 9a)find y and x intercepts b) find the first derivative c) find any critical values
1. 0 answers
2. asked by Gabby
3. 1,015 views
two community organizations that involve in supporting or giving redress to hiv
1. 2 answers
2. asked by zanele
3. 996 views
<21{3[2(08)44]}> Surveys show that people who use calorie information to decide which foods to eat consume on average 100
1. 0 answers
2. asked by Donna
3. 962 views
A spherical shell of radius R carries a uniform surface charge density (charge per unit area) σ. The center of the sphere is at
1. 2 answers
2. asked by tanvir ali
3. 932 views
A 12-year-old boy presents with his father to the ER due to open wounds to his arm, hand, and upper leg. The injury occurred
1. 1 answer
2. asked by Steve
3. 879 views
what is the solution to this problem 6 5x=1296
1. 1 answer
2. asked by tasha
3. 867 views
When a cannon with a longer barrel is fired, the force of expanding gases acts on the cannonball for a longer distance. What
1. 0 answers
2. asked by Chris
3. 866 views
Two large, parallel, conducting plates are 20 cm apart and have charges of equal magnitude and opposite sign on their facing
1. 2 answers
2. asked by Lex
3. 860 views
Inside an insulated container, a 250-g ice cubeat 0°C is added to 200 g of water at 18°C. (i) What is the final temperature of
1. 1 answer
2. asked by Meder
3. 858 views
How many grams of CaCl2 would be required to produce a 3.5M(molar) solution with a volume of 2.0L?
1. 1 answer
2. asked by Sunny
3. 827 views
A body with a mass of 75 kg is located at a height of 20 m. If it is allowed to free fall to the ground. What will be its
1. 3 answers
2. asked by Danny
3. 827 views
you complain that the hot tub in your hotel suite is not enough. the hotel tells you that they will increase the temperature by
1. 1 answer
2. asked by Jeconiah. please a needy help!!!
3. 808 views
How much mL of 0.2 M NaOH are needed to titrate vinegar while doing a titration with Phenolphthalein?
1. 0 answers
2. asked by Shashi
3. 801 views
<11{1[3(02)02]}> Catherine goes to her local movie theater only to see romantic comedies. Since Catherine did not go to the
1. 0 answers
2. asked by Donna
3. 775 views
Max and Seymour are purchasing their first home using a VA guaranteed mortgage loan. Both have full entitlement. Their combined
1. 0 answers
2. asked by tmouery
3. 768 views
3. A particle of mass m= 5.00 kg is released from point A(at rest) and slides on the frictionless track shown in Figure below.
1. 1 answer
2. asked by VICTOR LAKAKI
3. 753 views
A park ranger wants to shoot a monkey hanging from a branch of a tree with a tranquilizing dart. The ranger aims directly at the
1. 1 answer
2. asked by Chris
3. 753 views
Help please, Four charges are placed at the four corners of a square of side 15 cm.The charges on the upper left and right
1. 0 answers
2. asked by daryl
3. 751 views
two charge 5NC and -2NC are placed at a point (5cm,0,0)and (23cm,0,0)in a region of a space where there is no other electric
1. 1 answer
2. asked by prachi
3. 750 views
Where does Sonya live?She lives in Moscow. With whom does Sonya live? She lives with her father, mother and her little sister
1. 1 answer
2. asked by rfvv
3. 744 views
Consider a five-pointed star made of resistors as shown below. Each resistor has resistance R=6 Ω. Find the equivalent
1. 2 answers
2. asked by ayan
3. 735 views
A Toyota dealer wants to find out the age of their customers (for advertising purposes). They want the margin of error to be 3
1. 2 answers
2. asked by Ahmad Syukri
3. 733 views
The solubility of the fictitious compound, administratium fluoride (AdF3) in water is 3.091×10−4 M. Calculate the value of
1. 2 answers
2. asked by adex
3. 673 views
A charged particle with mass m, charge |q|=6.4 ×10−19C and speed v=3 ×106 m/s enters from the bottom of the figure and
1. 0 answers
2. asked by tanvir ali
3. 673 views
Consider the titration of 50 mL of 0.250 M HCl with 0.1250 M NaOH. Calculate the pH of the resulting solution after the
1. 1 answer
2. asked by George
3. 666 views
Explain how drug addiction is a human factor that may cause ill health,accidents,crises or disaster
1. 1 answer
2. asked by Frank
3. 663 views
With a mass = 10 k.. the horizontal surface on which the block slides is frictionless. The speed of the block before it touches
1. 0 answers
2. asked by monea
3. 662 views
Scotland's lake and rugged highlands were created by what?
1. 1 answer
2. asked by Rolando
3. 649 views
To illustrate the calculation, assume that 21.95 mL of a thiosulfate solution is required to reduce the iodine liberated by
1. 3 answers
2. asked by Marcus
3. 642 views
In grandpa’s time automobiles were previously manufactured to be as rigid as possible, whereas autos are now designed to
1. 0 answers
2. asked by Chris
3. 635 views
What is the empirical formula of the compound with a mass percent composition of 70.0% Fe and 30.0% O? (Type your answer using
1. 2 answers
2. asked by sarah
3. 622 views
In the following options which one is maximum/highly exothermic reaction..?1)SrO+h2o 2)BaO+h2o 3)CaO+h2o 4)MgO+h2o Pls.... Need
1. 1 answer
2. asked by piyush
3. 619 views
A spherical shell of radius carries a uniform surface charge density (charge per unit area) . The center of the sphere is at the
1. 0 answers
2. asked by gorv
3. 617 views
An electric pole touches the ground due to bending in a wind. It is found that standing part of pole is equal to the distance of
1. 1 answer
2. asked by raj
3. 606 views
juan's band produced a number of CDs to sell at a gig.the batch of CDs cost $170.00 to make and each CD was sold for $2.50 more
1. 1 answer
2. asked by math lover
3. 605 views
Explain the term "borrow". Describe the situation in which it is used. Describe the confusion that may result from its use.
1. 1 answer
2. asked by Angela
3. 599 views
How much mL of 0.2 M NaOH are needed to titrate vinegar while doing a titration with Phenolphthalein?
1. 4 answers
2. asked by Shashi
3. 593 views
Questions about Avi(the author)Why was school a constant struggle for him? Avi kept writing because of the encouragement of his
1. 2 answers
2. asked by kara
3. 589 views
Triangle ABC has side lengths a,b and c. If these lengths satisfy a^2=a+2b+2c and -3=a+2b-2c, what is the measure (in degrees)
1. 1 answer
2. asked by mathslover please help
3. 588 views
A current I=2.3 A flows around a continuous path that consists of portions of two concentric circles of radii a and a/2,
1. 2 answers
2. asked by tanvir ali
3. 585 views
in 10-15 lines critically discuss 5 ways in which the teenage pregnancy impacts on the community
1. 2 answers
2. asked by Sbusiso
3. 578 views
Consider a five-pointed star made of resistors as shown below. Each resistor has resistance R=6 Ω. Find the equivalent
1. 1 answer
2. asked by ayan
3. 576 views
Consider a thin, infinitely long conducting ribbon that carries a uniform current density j (current per unit area). The width
1. 1 answer
2. asked by tanvir ali
3. 571 views
explain or give a reason why slaves should have less hours to work.. REMEMBER YOU ARE THINKING LIKE A PERSON FROM 1815.NOTE:
1. 5 answers
2. asked by Wilfredo
3. 564 views
what is the product of reaction dehydrated K3(Al(C2O4)3) with KMnO4 in the present of KOH?
1. 1 answer
2. asked by Leo
3. 563 views
A convenience store owner believes that the median number of lottery tickets sold per day is 49. A random sample of 20 days
1. 0 answers
2. asked by Shelby Hacker
3. 562 views
Climbing to the top of Mount Everest is hard. But, it's slightly easier than you might think as people weigh less as they climb
1. 1 answer
2. asked by ayan
3. 550 views
Why bother using a machine if it cannot multiply work input to achieve greater work output?
1. 0 answers
2. asked by Chris
3. 550 views
On average the temperature falls about 5.4 F for every 1,000ft of additional altitude. If the temperature is 42 F on the ground,
1. 2 answers
2. asked by Camille
3. 547 views
Suppose that you are in charge to see if dropping an iPhone 5 will damage it. You want to find the proportion of iPhone 5 that
1. 1 answer
2. asked by Ahmad Syukri
3. 535 views
chen bought a bag f groceries weighing 15 pounds.His friend,jo,bought a bag of groceries that always weighed 15 pounds,but
1. 0 answers
2. asked by math lover
3. 535 views
Name two institutions/community organization that are involved in supporting or giving redress to these disasters Teenage
1. 1 answer
2. asked by Thato
3. 532 views
Suppose a student guesses the answer to a true or false Question on a test by tossing a coin: if the coin lands Heads, she
1. 2 answers
2. asked by anonymous
3. 529 views
a cyclist completes a 150-mile race in a certain amount of time.she completes another 150-mile race a month later,but this time
1. 1 answer
2. asked by math lover
3. 525 views
The boom weighs 2450 and is attached to a friction less pivot at its lower end. It is not uniform; the distance of its center of
1. 1 answer
2. asked by John
3. 521 views
List the key points of the Homestead Act and describe the effect it had on the opening of the western territories.
1. 1 answer
2. asked by Drizzy Joven
3. 517 views
If a sample of NH4NO3 contained 5.04 x 1022 hydrogen atoms, how many moles of NH4NO3 are in your sample?
1. 1 answer
2. asked by Anonymous
3. 509 views
A random number generator draws at random with replacement from the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. Find the chance that
1. 2 answers
2. asked by anonymous
3. 506 views
Identify and describe 3 environmental hazards that cause ill health, crises, and or disasters in any other community within
1. 3 answers
2. asked by Lerato
3. 505 views
If a conservationist catches 72 trout, tags them and throws them back in the lake. Later 33 trout are caught, 11 of them are
1. 1 answer
2. asked by teddy
3. 500 views
I need pictural or written ideas in order to help make a drawn model to explain the greenhouse effect.I've used websites but
1. 2 answers
2. asked by HS
3. 498 views
a wholesaler bought a batch of t-shirts for $77.00.She gave two of the T-shirts to her daughters and then sold the rest for a
1. 2 answers
2. asked by math lover
3. 496 views
I need a variety of tutors opinions and choices of what song they like the best.just write the name of the song amongst with the
1. 7 answers
2. asked by HS
3. 495 views
A die has one red face, two blue faces, and three green faces. It is rolled 5 times. Find the chance that the red face appears
1. 1 answer
2. asked by anonymous
3. 492 views
how to do this? how much does this equals? 2cos160*cos140*cos100
1. 1 answer
2. asked by Eee
3. 492 views
Which direction would equilibrium shift in the reaction N2 + 3H2 2NH2 + 22,000 cal if it is cooled?
1. 1 answer
2. asked by Marcie
3. 490 views
Let Alpha and Beta be the zeros ofthe cubic polynomial x^3 + ax^2 + bx + c satisfying the relation Alpha * Beta -1 = 0. Prove
1. 0 answers
2. asked by Steve
3. 486 views

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