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Questions Asked on February 13, 2011

A driver of a car going 90.0km/h suddenly sees the lights of a barrier 40.0 metres ahead. It takes the driver 0.75 seconds
1. 1 answer
2. asked by Steph
3. 14,878 views
To find the distance from the house at A to the house at B, a surveyor measures the angle ACB, which is found to be 70°, and
1. 3 answers
2. asked by Anonymous
3. 10,651 views
For Mn3+, write an equation that shows how the cation acts as an acid.
1. 1 answer
2. asked by Ari
3. 6,778 views
Consider the curve given by the equation y^3+3x^2y+13=0a.find dy/dx b. Write an equation for the line tangent to the curve at
1. 1 answer
2. asked by Little
3. 5,666 views
A mass m is traveling at an initial speed of v0 = 25.0 m/s. It is brought to rest in a distance of 62.5 m by a force of 15.0 N.
1. 2 answers
2. asked by Femfatal
3. 5,281 views
When N2O5 (g) is heated it dissociates into N2O3 (g) and O2 (g) according to the following reaction: N2O5 (g) <--> N2O3 (g) + O2
1. 2 answers
2. asked by Anonymous
3. 4,863 views
A machine has a mechanical advantage of 2. This means its output force is _____.a. 0.5 times greater than the input force b. 2
1. 6 answers
2. asked by donna
3. 4,437 views
Thallium -208 has a half-life of 3.053 min. How long will it take for 120g t decat ot 7.50g
1. 1 answer
2. asked by Anonymous
3. 4,177 views
what is the molality of a solution of 50.0 grams of propanol in 152 mL water if the density of wate is 1.0 g/mL and the density
1. 3 answers
2. asked by paula
3. 3,449 views
courtney walks three laps around a 1/4 mile track. How many feet does she walk? if 1mile = 5280ft
1. 5 answers
2. asked by sharon
3. 3,110 views
Suppose that a compound Z had a partition coefficient of 8 in ether-water. If 10g of z was dissolved in 100mL of water, and if
1. 5 answers
2. asked by carol
3. 3,013 views
A ball of mass m = 0.75 kg is thrown straight upward with an initial speed of 8.9 m/s. Plot the gravitational potential energy
1. 3 answers
2. asked by Bob
3. 2,983 views
A bag contains a mixture of copper and lead BB's. The average density of the BB's is 9.87 g/cm^3. Assuming that copper and lead
1. 6 answers
2. asked by Tonya
3. 2,767 views
Snow spent 5/8 of her money on books and another 1/6 of her money on stationeries. What fraction of Kathy’s money was left?
1. 5 answers
2. asked by rowena
3. 2,637 views
The vapor pressure of water is 23.8 torr. at 25 degrees C. Determine the mass of glucose (molar mass 180g/mol) needed to add to
1. 2 answers
2. asked by Lucho
3. 2,619 views
What is the work done by a car's braking system when it slows the 1500-kg car from an initial speed of 96 km/h down to 56 km/h
1. 2 answers
2. asked by merri
3. 2,511 views
Analysis of a reaction mixture showed thatit had the composition 0.417 mol/L N2, 0.539 mol/L H2, and 0.127 mol/L NH3 at 800 K,
1. 6 answers
2. asked by Anonymous
3. 2,471 views
The vapor pressure of an organic solvent is 50 mm Hg at 25°C and 200 mm Hg at 45°C. The solvent isthe only species in a closed
1. 1 answer
2. asked by Anonymous
3. 2,312 views
At a certain temperature, the equilibriumconstant Kc is 0.154 for the reaction 2 SO2(g) + O2(g) *) 2 SO3(g) What concentration
1. 4 answers
2. asked by Anonymous
3. 2,092 views
Suppose a thermometer has marks at every one degree increment and the mercury level on the thermometer is exactly between the 25
1. 1 answer
2. asked by Tonya
3. 2,060 views
A 13.0-g sample of ice at -13.0°C is mixed with 112.0 g of water at 80.0°C. Calculate the final temperature of the mixture
1. 1 answer
2. asked by Katrina
3. 1,934 views
An unknown element Q has two known isotopes: 60Q and 63Q. If the average atomic mass is 60.5 amu, what are the relative
1. 2 answers
2. asked by Ashley
3. 1,755 views
Concentrated nitric acid is 16M. What volume of nitric acid must be diluted with distilled water to prepare 5L of 0.1M nitric
1. 5 answers
2. asked by twynna
3. 1,725 views
recommending the purchase of excess equipment to use up your allocated funds before the end of the fiscal year so that your
1. 3 answers
2. asked by minnie
3. 1,538 views
At 350 K, Kc = 0.142 for the reaction2BrCl(g) *) Br2(g) + Cl2(g) An equilibrium mixture at this temperature contains equal
1. 3 answers
2. asked by Anonymous
3. 1,426 views
In the TCP/IP model, the best path through the network is determined at the ______________ layer. In the OSI model, the same
1. 0 answers
2. asked by Sue
3. 1,417 views
Find the discontinuities of the given function. Classify them as a point discontinuity or a jump discontunuity.g(x)= x, x<-3
1. 3 answers
2. asked by Janet
3. 1,397 views
An aqueos solution is 65%(v/v) rubbing alcohol.How many millimeters of water are in a 95-mL sample of this solution?
1. 1 answer
2. asked by Hector
3. 1,369 views
what is the effect of the absence of the catalyst on the outcome of the thermal decomposition of KCLO3
1. 1 answer
2. asked by jasmin
3. 1,363 views
A ball of mass m = 0.75 kg is thrown straight upward with an initial speed of 8.9 m/s. Plot the gravitational potential energy
1. 1 answer
2. asked by Bob
3. 1,300 views
Can anyone help with this...I need to find the derivative of the functions below. If possible please show working so I can try
1. 1 answer
2. asked by Christine
3. 1,290 views
is anyone can answer this fraction below..Rename these improper fractions as mixed numbers: 16/5 18/6 19/4 24/5 sorry if it is
1. 3 answers
2. asked by oscar
3. 1,242 views
What is the molar concentration of calcium hydroxide that has 0.185g solute in 100ml solution?
1. 4 answers
2. asked by twynna
3. 1,226 views
Assuming a total mass of 95kg (bicycle plus rider), what must be the cyclist's power output to climb the same hill at the same
1. 1 answer
2. asked by TEE
3. 1,201 views
22. Choose the best description for a solid held together by London forces.A. This substance melts at -30 °C to give a liquid
1. 1 answer
2. asked by Kathy R
3. 1,186 views
I am still having a little problem with my original question. However, this is what I have done so far.I am not sure what to do
1. 2 answers
2. asked by paula
3. 1,120 views
solve for t C=ts, t=
1. 1 answer
2. asked by kathy
3. 1,115 views
A positive charge of 5.10 C is fixed in place. From a distance of 3.70 cm a particle of mass 6.80 g and charge +2.60 C is fired
1. 1 answer
2. asked by Ana
3. 1,098 views
1. Given f(x)=3^(x-2), simplify f(x+1)-f(x) into an expression of the form (a)(3^x)2. Given the function f(x)=e^(x) ln x, write
1. 0 answers
2. asked by Arthur
3. 1,086 views
Write a net ionic equation forHg(C2H3O2)2 + NaI
1. 1 answer
2. asked by Jim
3. 1,084 views
A 75ft diagnol brace on a bridge connects a support of the center of the bridge The horizontal distance that it spans is 15ft
1. 1 answer
2. asked by Nick
3. 1,047 views
Heights of males are norm. dist. w/ u=180cm and o^2=16cm^2 while female heights have u=170cm and o^2=25cm^2.a)random male and
1. 4 answers
2. asked by CS
3. 1,030 views
An investor purchases a 10-year U.S. government bond for $800. The bond's coupon rate is 10 percent and,? at time of purchase,
1. 0 answers
2. asked by marie
3. 1,018 views
what is the relation between resultant and equilibrant?
1. 1 answer
2. asked by kristine L. grace
3. 978 views
An aqueous solution of nacl has a mole fraction of 0.21. What is the mass of NaCl dissolved in 100.0 mL of solution?
1. 2 answers
2. asked by Ashley
3. 977 views
The length of time it takes college students to find a parking spot in the library parking lot follows a normal distribution
1. 1 answer
2. asked by Andy
3. 971 views
A 69.0 firefighter climbs a flight of stairs 22.0 high.How much work is required?
1. 3 answers
2. asked by mar
3. 962 views
please can anyone kindly help me to get the answer of this word problem,i would like someone to help me please for the word
1. 2 answers
2. asked by rowena
3. 960 views
Draw Lewis structures for each of the following ion: CO3 (2-)I tried this method below, i do not know where am i going wrong,
1. 1 answer
2. asked by Farah
3. 956 views
Find the quadratic polynomial g(x)=ax2+bx+c which best fits the function f(x)=7x at x=0, in the sense that g(0)=f(0), and
1. 0 answers
2. asked by Alyssa
3. 949 views
In a distant planet, a freely falling object gains speed at a steady rate of 25 m/s during each 1.2 seconds of fall. The gravity
1. 1 answer
2. asked by Anonymous
3. 940 views
how may psychology be understood as both an art and a science?
1. 3 answers
2. asked by ashley
3. 939 views
Calculate the number of moles and atoms.A)64 gm of O2 B)58.9 gm of CI C)90.5gm of (HN4)2SO4 D)243gm of Mg2
1. 1 answer
2. asked by twynna
3. 937 views
If the following amounts of lumber need to be delivered to 2 different staging areas at 4 different job sites, how many total
1. 1 answer
2. asked by Tracey
3. 917 views
if you place a dime penny and quarter on a spinning turntable which coin has a greater speed than the penny than the penny
1. 4 answers
2. asked by Lex
3. 914 views
A cannon shell is fired up in the air at an initial speed of 225m/s.After how much timeis the shell at a height of 6.20 X 102
1. 1 answer
2. asked by NeedHelp
3. 897 views
Can someone please help me to answer the following question? The question below has four choices, but only one correct answer.
1. 3 answers
2. asked by Dave
3. 897 views
calculate the necessary amounts of solutes and solvent to make a 4l bottle of antifreeze that will have a 35 degree change in
1. 2 answers
2. asked by redgy
3. 891 views
arrange the following compounds in the order of increasing polarity HF, H2SE, N2, H2sI believe that the answer is H2Se < H2S <
1. 2 answers
2. asked by Kathy R
3. 889 views
hope that someone can help me to solve this solving problems below....Discounts : a. for the total discounts that the following
1. 0 answers
2. asked by dely
3. 884 views
Miranda’s Financial aid stipulates that her tuition not exceed $1500. If her college charges a $125 registration fee plus $475
1. 1 answer
2. asked by Anonymous
3. 850 views
What was the three-Fifths compromise
1. 1 answer
2. asked by Anonymous
3. 833 views
Can you recommend me internet sites where I can both listen to and read the news in English? I need to practise the vocabulary
1. 2 answers
2. asked by Mike
3. 829 views
Venus begins a new year every 225 days. Earth begins a new year every 365 days. If both planets begin a new year on the same
1. 1 answer
2. asked by carl
3. 826 views
A cap of a sphere is generated by rotating the region about the y-axis. Determine the volume of this cap when the radius of the
1. 1 answer
2. asked by ellen
3. 821 views
two identical batteries are connected to different circuit. explain how it is possible for the batteries to supply different
1. 1 answer
2. asked by lee
3. 817 views
It is well known that the heights of individual American men are normally distributed with mean 70 inches and standard deviation
1. 1 answer
2. asked by LISA
3. 802 views
Find the domain and range of the given functions.1. h(x)= (squareroot4x+1)+3x-5 2. f(x)=3cos(x/3)-1 3. g(x)= log (x+2) Can
1. 8 answers
2. asked by Janet
3. 801 views
What factor made Germany’s blitzkrieg so different from the tactics used in World War I?
1. 1 answer
2. asked by Casandra
3. 787 views
Find the missing numbers to complete the patterns. Some are arithmetic and some are geometric. State the commom differences or
1. 1 answer
2. asked by Elizabeth O'Loughlin
3. 783 views
A rectangular sheet ofaluminum foil is 50 centimeters long and 20 centimeters wide, and weighs 5.4 grams. Find the thickness of
1. 2 answers
2. asked by Anonymous
3. 760 views
Two cars are travelling in the same direction along a street. Car A collides with Car B and they lock together. Calculate tgeur
1. 1 answer
2. asked by Laureen
3. 760 views
If Aluminum has .22 K/cal and Iron has .12 kcal and each of them has 1.10kcal. Which would be higher in degerees? (Would it be
1. 0 answers
2. asked by nikka
3. 755 views
This morning you purchased a stock that will pay an annual dividend of 1.90 per share next year. You require a 12 percent rate
1. 2 answers
2. asked by Angel
3. 751 views
In a particular hospital, 6 newborn babies were delivered yesterday. Here are their weights (in ounces):112, 96, 109, 126, 99,
1. 1 answer
2. asked by Rachal
3. 740 views
Select a company that produces a product that you use andwith which you are familiar. For the company to make decisions about
1. 1 answer
2. asked by Ms. J
3. 733 views
Find the volume if the region enclosing y=2x, y=0, x=3 is rotated a)about the y-axis b)about the line x=3 c)about the line x=4.
1. 1 answer
2. asked by Maya
3. 733 views
what skills do you need to be a cobbler in colonial times
1. 1 answer
2. asked by jil
3. 724 views
A small utility car is pulled along a straight section of railroad tracks by a rope. When the ropepulls the car for 10 seconds
1. 1 answer
2. asked by John
3. 724 views
How many grams of potassium carbonate are needed to make 0.200 L of a 2.50M solution?
1. 1 answer
2. asked by Hannah
3. 716 views
Can anyone help with this...I need to find the derivative of the functions below. If possible please show working so I can try
1. 2 answers
2. asked by Christine
3. 709 views
Answers for telling an associate and close friend that she should pay more attention to her work responsibilities, or management
1. 1 answer
2. asked by vienessa
3. 702 views
LEt f and g be continous functions with the following propertiesi. g(x) = A-f(x) where A is a constant ii. for the integral of 1
1. 0 answers
2. asked by Little
3. 699 views
A cap of a sphere is generated by rotating the region about the y-axis. Determine the volume of this cap when the radius of the
1. 0 answers
2. asked by ellen
3. 695 views
Write an equation of the line satisfying the given conditionsParallel to the line y=-4x+3 and a y intercept of -5 Please help I
1. 1 answer
2. asked by Ariana
3. 681 views
An unknown element Q has two known isotopes: 60Q and 63Q. If the average atomic mass is 60.5 amu, what are the relative
1. 0 answers
2. asked by Ashley
3. 680 views
A sample of helium gas has a volume of 325L at 25C and at 5atm. At what temperature the gas can be compressed at 50atm to a
1. 1 answer
2. asked by twynna
3. 678 views
I really need help writing this out An overnight delivery service accepts packages of up to 165 inches in length and girth
1. 1 answer
2. asked by Zaire
3. 677 views
please can u help me for my homework thanks a lot the question is below..A container is 1/3 full of water and 1/4 full of oil.
1. 2 answers
2. asked by edwin
3. 676 views
The perimeter of a triangle is 102. side b is twice as long as side A. and side C is three less than side B.. how long is each
1. 4 answers
2. asked by Randy
3. 676 views
Can anyone help work these problumns out step by step?11x-37=x+23 10p-26=p-44 -13x+5=4x-6 -7x+13=4x-7 11x+5=17 -11x+13=-42
1. 1 answer
2. asked by Scotty
3. 676 views
Formal charge: kind of confused?why cant i get -1? i just want to know if the way im solving it, if its completely wrong. i have
1. 1 answer
2. asked by jessie
3. 671 views
which transformation is the image not congruentline reflection translation rotation dilation
1. 0 answers
2. asked by pavleen
3. 671 views
Find the area of the region shared by the circle r=2 and the cardioid r=2(1-cosx)(that x is supposed to be theta, and as you can
1. 1 answer
2. asked by Calculus
3. 670 views
LEt f and g be continous functions with the following propertiesi. g(x) = A-f(x) where A is a constant ii. for the integral of 1
1. 0 answers
2. asked by alex
3. 669 views
i am sorry ms.sue i just changed because i ashamed that i always posted question on my homework and i afraid that anyone might
1. 3 answers
2. asked by maria
3. 666 views
Q; Melissa plays with the same four girls every day. She has a lot of energy,is independent,and is concerned about what her
1. 3 answers
2. asked by alex
3. 661 views
I am writing a paper on environment and I wanted to know what all the environmental risks are out there.Also what type of
1. 1 answer
2. asked by Stefina
3. 659 views
Frank has a 65% chance of receiving an A grade in geology, a 60% chance of receiving an A grade in mathematics, and a 77% chance
1. 1 answer
2. asked by Rachal
3. 656 views
A front end of modern cars are designed to crumple in the event of head-on-collision. (a) why are cars now designed to crumple
1. 1 answer
2. asked by Myk
3. 646 views

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