Questions Asked on October 21, 2010

An ice cube that is 3 cm on each side is melting at a rate of 2 cm cubed per minute. how fast is the length of the side
1. 2 answers
2. asked by Joel
3. 8,272 views
Querida Beth:1) (blank) esta todo bien y esperamos que 2) (blank) tambien lo este. 3) (blank) lo pensemos y lo conversemos, tu
1. 5 answers
2. asked by kyle
3. 7,453 views
Complete and balance the reactionAl(s) + Pb2+(aq) ! using the smallest possible integers. I got: 2Al(s) + 3Pb2 ==> Al2Pb3
1. 4 answers
2. asked by brian
3. 6,200 views
In the vertical jump, an Kobe Bryant starts from a crouch and jumps upward to reach as high as possible. Even the best athletes
1. 8 answers
2. asked by bob
3. 4,977 views
just a couple more questions1.) The power needed to accelerate a projectile from rest to is launch speed v in a time t is 43.0
1. 3 answers
2. asked by jo
3. 4,652 views
1. If you look at a photograph for a short time and then look awayfrom it, your trace memory of the image will A. generally fade
1. 11 answers
2. asked by mallory
3. 4,147 views
What is pH buffer of 0.1 mol L-1 Na2HPO4/O.15 mol L-1 KH2PO4?KH2PO4? Given Ka(H2PO4-) = 6.2 x 10-8). I would like to know the
1. 1 answer
2. asked by Helen
3. 2,766 views
the half-life of radon-222 is 3.823 days. what was the original mass if 0.050g remains after 7.646 days?
1. 3 answers
2. asked by Anonymous
3. 2,708 views
Can you divide 14 shirts into 2 equal groups?Why or why not?
1. 24 answers
2. asked by Elijah
3. 2,629 views
the ratio of hydrogen atom to oxygen atoms in water is 2:1 if an amount of water contains 341 trillion atoms of oxygen how many
1. 2 answers
2. asked by courtney
3. 2,323 views
A Ferris wheel with radius 8.8 m rotates at a constant rate, completing one revolution every 34.6 s. Suppose the Ferris wheel
1. 2 answers
2. asked by Anonymous
3. 2,192 views
please explain how 24 divided by 2.5 equals 9.6
1. 3 answers
2. asked by bennie
3. 2,084 views
Which is the correct form of equilibrium expression of the following reaction.2PbS(s)+3O2(g)reverse arrow 2PbOs + 2SO2g Why is
1. 1 answer
2. asked by Helen
3. 1,935 views
I'm trying to find the theme of the book I'm reading, but I don't really know what exactly is a theme, could anyone give me an
1. 2 answers
2. asked by Shadow
3. 1,804 views
I need help balancing equations1) CH4+O2-->CO2-->+H2O 2) Hf+N2-->Hf3N4 3) Mg+H2SO4-->MgSO4+H2 4) C2H6+O2 -->CO2+H2O 5) Pb(NO3)2
1. 2 answers
2. asked by S
3. 1,695 views
Suppose you are standing 201 m from a radio transmitter. What is your distance from the transmitter in terms of the number of
1. 2 answers
2. asked by Noelle
3. 1,659 views
a hopper jumps straight up to a height of 0.45m. with what velocity will it return to the table?
1. 2 answers
2. asked by Anonymous
3. 1,580 views
The Computer Anxiety Rating Scale (CARS) measures an individuals level of computeranxiety, on a scale from 20 (no anxiety) to
1. 1 answer
2. asked by GG
3. 1,577 views
As standard deviation increases, samples size _____________ to achieve a specified level of confidence.A. Increases B. Decreases
1. 2 answers
2. asked by Daniel
3. 1,560 views
what will be the mass of angydrous Alum left over if one starts with 100.00 g of hydrated Alum?please can you explain what
1. 1 answer
2. asked by Jay
3. 1,537 views
what proportion of a normaql distribution is located between each of the following z- score boundaries?a. z= -0.50 and z = +0.50
1. 2 answers
2. asked by John
3. 1,494 views
The equation d=3.5t + 50 represents the distance in meters,d, that a cyclist is from his home after t seconds. Which pair of
1. 5 answers
2. asked by john
3. 1,490 views
how do you establish the identity of cos(3pi/2+0)=sin0
1. 2 answers
2. asked by rebecca
3. 1,451 views
The toy car in figure 6-12 runs off the edge of a table that is 1.225-m high. The car lands 0.400m from the base of the tablea.H
1. 1 answer
2. asked by Samantha
3. 1,440 views
The ratio of the sales price of a jacket to the original price is 3:4. the original price is $64. what is the sale price? how do
1. 5 answers
2. asked by courtney
3. 1,438 views
I need to write an equation for the following:Denise's cell phone plan is $29.95 per month plus $.10 per minute for each minute
1. 3 answers
2. asked by Nic
3. 1,427 views
lydia wrote 4_1/2 pages of her science report in one hour. what was her writing rate in pages per minute?(2-4 rates ratios and
1. 2 answers
2. asked by Max
3. 1,401 views
Sketch the regions enclosed by the given curves. Decide whether to integrate with respect to x or y. Draw a typical
1. 1 answer
2. asked by helpplease
3. 1,400 views
Problem#9: Consider the fuel octane (the main component of gasoline) and its combustion reaction2C8H18(l) + 25O2(g) → 16CO2(g)
1. 1 answer
2. asked by Sarah
3. 1,371 views
If f(x) = 2 √x, use the definition of derivative to find f′( x )
1. 1 answer
2. asked by Trevor
3. 1,366 views
Two children are balancing on a teeter-totter. One child has a mass of 30.0 kg and is sitting 1.3 meters from the pivot. The
1. 1 answer
2. asked by kate
3. 1,366 views
Two children are balancing on a teeter-totter. One child has a mass of 30.0 kg and is sitting 1.3 meters from the pivot. The
1. 1 answer
2. asked by kate
3. 1,360 views
If you are driving 100km/h along a straight road and you look to the side for 1.9s , how far do you travel during this
1. 1 answer
2. asked by Emily
3. 1,356 views
Is this a simile or a metaphorThe rain felt like small kisses on Rosemary's face,
1. 3 answers
2. asked by Megan
3. 1,354 views
From the top of a tall building, a gun is fired. The bullet leaves the gun at a speed of 340 m/s, parallel to the ground. The
1. 1 answer
2. asked by Anonymous
3. 1,344 views
A 112 mL solution of 0.351 M HCl is added to 52.0 mL of 0.161 M HCl. What is the new concentration of HCl?
1. 2 answers
2. asked by Madison
3. 1,342 views
Two people enter a bus. Two adjacent cramped seats are free. Each person must decide whether to sit or stand. Sitting alone is
1. 0 answers
2. asked by jo
3. 1,295 views
Can you help me with these two questions thanks.Acts 1 and 2 Cause and effect relationships The Crucible Directions: Fill in the
1. 1 answer
2. asked by Karen
3. 1,293 views
I have only been able to answer a few tonight. Preference is and will be given to questions in which evidence of work or thought
1. 0 answers
2. asked by drwls
3. 1,235 views
What is the wavelength of a photon with an energy of 6.35 10-19 J? (The speed of light in a vacuum is 2.998 108 m/s. Planck's
1. 1 answer
2. asked by mary
3. 1,204 views
India's population has been catching up with China, with 1132 million in mid-2007 and growing at 1.6% per year, versus China
1. 1 answer
2. asked by Anonymous
3. 1,201 views
Find the emf for the cellCr(s) |Cr3+(aq, 0.37 M) || Pb2+(aq, 0.0095 M) | Pb(s). Answer in units of V I got .548733V Is this
1. 4 answers
2. asked by brian
3. 1,192 views
What is the term for the character in conflict with the main character?
1. 2 answers
2. asked by danny
3. 1,175 views
India's population has been catching up with China, with 1132 million in mid-2007 and growing at 1.6% per year, versus China
1. 2 answers
2. asked by Anonymous
3. 1,167 views
how far from the base of a 10ft ladder be placed so that it reaches 8ft up the wall
1. 2 answers
2. asked by latifah
3. 1,162 views
If 10.6 mol of carbon monoxide is produced how many grams of carbon were used?How do you convert moles to grams? And what are
1. 1 answer
2. asked by Helen
3. 1,157 views
There are 3 lucky tickets among 10 lottery tickets. 3 tickets aredrawn at random. What is a probability that one ticket selected
1. 1 answer
2. asked by JHONY
3. 1,153 views
things do not go quite as planned. you invested $8000, part of it in stock that paid 12% annual interest. however, the rest of
1. 2 answers
2. asked by ximena
3. 1,141 views
Sketch the regions enclosed by the given curves. Decide whether to integrate with respect to x or y. Draw a typical
1. 1 answer
2. asked by saywhat
3. 1,126 views
please give me an example of a positive and a negative nonzero integer.Thank you.
1. 1 answer
2. asked by Magda
3. 1,079 views
From a laboratory process designed to separate water into hydrogen and oxygen gas, a student collected 10.0 g of hydrogen and
1. 1 answer
2. asked by Raphael
3. 1,077 views
How do find the speed of a marble after falling from rest a distance of 1.2 m?
1. 0 answers
2. asked by luke
3. 1,075 views
Can you please check if it is everything right?Thank you. 1.I live in a small country village. My brother is a primary school
1. 2 answers
2. asked by Franco
3. 1,072 views
What is the energy of a photon with a wavelength of 4.55 10-6 m? (The speed of light in a vacuum is 2.998 108 m/s. Planck's
1. 1 answer
2. asked by mary
3. 1,066 views
A triangle has vertices P(7,7), Q(-3,-5), and R(5,-3).a. calculate the lengths of the midsegmaents b. calculate the lengths of
1. 2 answers
2. asked by Ted
3. 1,060 views
The velocity of a particle constrained to move along the x-axis as a function of time t is given by:v(t)=-(13/t_0) sin(t/t_0).
1. 4 answers
2. asked by bob
3. 1,054 views
A boat cruises 36 miles against a 3 mph current and 36 miles back in the direction of the same current. The round trip takes 5
1. 2 answers
2. asked by Anonymous
3. 1,050 views
Divide $4000 to Kimand Dan in the ratio 3:5 How much money will each have?
1. 2 answers
2. asked by Me
3. 1,043 views
trig question2sin^2x+sinx-6=0 how to solve for x when the restriction is x is greater than or equal to zero but less than 2pi
1. 2 answers
2. asked by H
3. 1,021 views
Could you tell me if these sentences are correct? I have to identify the linking verbs.1. I have grown weary of television. 2.
1. 1 answer
2. asked by Kim
3. 1,020 views
A 1.25g sample of dry ice is added to a 750ml flask containing nitrogen gas at a temperature of 25.0 C and a pressure of
1. 2 answers
2. asked by Anonymous
3. 1,016 views
A 90g arrow is shot straight up into the air with a spped of 23 m/s. It reaches a maximum height of 25.9898m. Find the initial
1. 1 answer
2. asked by Deb
3. 1,004 views
Ida catches four fish that weigh 5 1/4, 3 1/2, 1 3/4 and 2 pounds each. She releases the smallest fish. What is the total weight
1. 7 answers
2. asked by Aly
3. 996 views
the diagram shows a square xyrz of side 15m with an inscribed circle centre o.calculate the area of the square, circle and the
1. 0 answers
2. asked by tia
3. 991 views
Thank you very much. Could you please check these sentences,too?1.My hobbies are doing athletics, playing the drums and going to
1. 1 answer
2. asked by Franco
3. 976 views
If a ball is thrown vertically upward from the roof of 48 foot building with a velocity of 80 ft/sec, its height after t seconds
1. 3 answers
2. asked by sandy
3. 974 views
A random sample of two hundred fifteen adults is selected from a certain population ofregistered voters. Assume the population
1. 0 answers
2. asked by Chris
3. 966 views
if you had one mole of m&ms, how many times could you cover the surface of the earth?
1. 3 answers
2. asked by Robin
3. 954 views
a girl delivering newspaper travels 3 blocks west, four blocks north, then 6 blocks east. What is the total distance she travel
1. 1 answer
2. asked by lili
3. 941 views
I don;t know how to solve the following equation.9+6x=-6x+105 I have -6x +6x -105 -105 -96=12x 12 12 x=8
1. 1 answer
2. asked by Josh
3. 936 views
11.5 Consider an experiment with four groups with eighth values in each. For thefollowing ANOVA summary table, fill in all the
1. 1 answer
2. asked by GG
3. 929 views
I REALLY don't understand the reason/basis/use of logarithms. I have listened to my teacher, who never is clear on much of
1. 5 answers
2. asked by Mary
3. 927 views
A shipment of 35 computers contains three that are defective. How many ways can a small business buy four of these computers and
1. 1 answer
2. asked by Anonymous
3. 911 views
Who can impose the draft and under what circumstances?
1. 1 answer
2. asked by Jessica
3. 896 views
A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 745 m/s. The barrel is pointed directly at the
1. 2 answers
2. asked by Anonymous
3. 891 views
A model rocket is constructed with a motor that can provide a total impulse of 25.5 N · s. The mass of the rocket is 0.213 kg.
1. 1 answer
2. asked by ZAC
3. 891 views
A sports car accelerates from rest to 89 km/h in 6.1s . What is its average acceleration in
1. 2 answers
2. asked by Emily
3. 888 views
which region(s)have the most peole living near each other?
1. 4 answers
2. asked by I NEED HELP
3. 880 views
An m X n YOUNG TABLEAU is an m X n matrix such that the entries of each row are in sorted order from left to right and the
1. 3 answers
2. asked by Traxx
3. 879 views
what will be the mass of angydrous Alum left over if one starts with 100.00 g of hydrated Alum?
1. 1 answer
2. asked by Jay
3. 878 views
In this case, the inflection point, andequivalence, occurs after 23.25mL of 0.40 M NaOH has been delivered. Moles of base at the
1. 1 answer
2. asked by John
3. 876 views
Okay 5/9 + 7/9I know you change the denominator so 5/6 = 15/18 or 3/18 7/9 = 14/18 or 2/18 which one?
1. 7 answers
2. asked by Aly
3. 875 views
An athlete at the gym holds a 1.2 kg steel ball in his hand. His arm is 64 cm long and has a mass of 4.0 kg. What is the
1. 2 answers
2. asked by kate
3. 863 views
Calculate the [H3O+] of each of the following H2SO4 solutions.For a 0.50 M soln How do I reach the answer? Do I have to use a
1. 3 answers
2. asked by Anonymous
3. 860 views
24. A quantum is a finite amount of energy gained or lost by an atom.- F?25. An atom is in an excited state when it has its
1. 2 answers
2. asked by mysterychicken
3. 845 views
Please check this paragraph.please.Wrongdoing and wickedness are as old as first man born in the world. These problems are so
1. 1 answer
2. asked by Sana
3. 837 views
find the x and y intercepts:3x - 2y = -12 i know for the x intercept, put y=0 in the equation,s olve for x. For the y intercept,
1. 1 answer
2. asked by sami
3. 834 views
A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates. The incident water stream has a
1. 0 answers
2. asked by ZAC
3. 831 views
A 1.95 kg block is held in equilibrium on an incline of angle q = 53.1o by a horizontal force, F, applied in the direction shown
1. 2 answers
2. asked by Matt
3. 829 views
What does this mean?A colony is part of an empire and so colonialism is closely related to imperialism. Colonialism is based on
1. 1 answer
2. asked by Alania
3. 825 views
An artillery shell is fired with an initial velocity of 300 m/s at 65.0° above the horizontal. To clear an avalanche, it
1. 1 answer
2. asked by KC
3. 823 views
Bill kicks a rock off the top of his apartmentbuilding. It strikes a window across the street 12 m away. The acceleration of
1. 1 answer
2. asked by Anonymous
3. 813 views
Calculate the average kenetic energy of the CH4 molecules in a sample of CH4 gas at 273K and at 546K.So, should I have two
1. 1 answer
2. asked by Amber
3. 812 views
Which of the following would have a positive change in standard entropy at constant temperature? Choose all that apply.A)
1. 1 answer
2. asked by Nick
3. 811 views
A 4600 kg helicopter accelerates upward at 2.26 m/s2. 2The acceleration of gravity is 9.8 m/s . What lift force is exerted by
1. 1 answer
2. asked by jess
3. 810 views
I'm having trouble understanding how I am supposed to identify the theme of creating art. Should I be looking at the environment
1. 8 answers
2. asked by Samuel Brogdon
3. 807 views
sin x + cos x-------------- = ? sin x sin x cos x ----- + ----- = sin x sin x cos x/sin x = cot x this is what i got, the
1. 2 answers
2. asked by Anna
3. 806 views
Find the x and y intercepts:3x - 2y = -12 i know the anwser is (2 , -3) but how do i show the work that i found that anwser?
1. 2 answers
2. asked by sami
3. 803 views
Which statement is not a benefit of increased development?1) improved access to health care 2) increased wealth 3) more even
1. 2 answers
2. asked by Cassie
3. 801 views
A crate of mass m = 230 kg is pushed at constant speed up the frictionless ramp (θ = 29.0°) by a horizontal force F. What is
1. 3 answers
2. asked by jim
3. 799 views

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