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Questions Asked on October 16, 2010

The particle travels along the path defined by the parabola y=0.5(x^2). If the component of velocity along the x-axis is v=5t
1. 3 answers
2. asked by Claire
3. 8,606 views
a hedgehog wishes to cross a road without being run over. he observes the angle of elevation of a lamp post on the other side of
1. 3 answers
2. asked by Fiona
3. 6,103 views
Did I answer these correctly?1. What is the total number of principal energy levels or shells in an atom with an atomic number
1. 3 answers
2. asked by timmy123
3. 5,028 views
it takes 12 men to make 12 tables in 9 hours. how long will it take 8 men to make 32 tables?
1. 2 answers
2. asked by kelsey
3. 5,015 views
Write a balanced chemical reaction to show the dissociation of solid magnesium chloride (MgCl2) in water, indicate states of the
1. 1 answer
2. asked by Jessica
3. 3,856 views
Write the net ionic equation for this reaction occurring in water: Sodium phosphate and calcium chloride are mixed to form
1. 3 answers
2. asked by Elva
3. 3,359 views
what is the empirical formula for a compound whose molecular formula is C2Cl6
1. 1 answer
2. asked by angie
3. 2,840 views
An atom contains a total of 25 electrons. When the atom is in the ground state, how many different principal energy levels will
1. 4 answers
2. asked by timmy123
3. 2,839 views
The net ionic equation for ALL aqueous reaction of strong acids and strong soluble bases that form soluble salts is1. the
1. 2 answers
2. asked by Elva
3. 2,739 views
a patrol boat took 2.5 hours for a round trip 12km upriver and 12km back. the speed of the current was 2 km/h. what was the
1. 1 answer
2. asked by lawrence
3. 2,622 views
The total cost, c, in dollars of operating a factory that produces kitchen utensils is C(x)=0.5x^2+40x+8000, where x is the
1. 2 answers
2. asked by Anonymous
3. 2,559 views
Write a formula for the ionic compound that forms between each of the following pairs of elements.1. aluminum and oxygen Express
1. 3 answers
2. asked by Lisa
3. 2,540 views
If f has domain [0, infinity) and has no horizontal asymptotes, then lim_(x->infinity) f(x) = infinity or lim_(x->infinity) f(x)
1. 1 answer
2. asked by Tersa
3. 2,171 views
Classify each as a lewis acid or lewis base...A)H20 B)O2- C)Cu2+ D)SO3 E)AlCl3 Lewis acids are electron pair acceptors. Lewis
1. 1 answer
2. asked by Adam
3. 2,143 views
In the reaction2Mg + SnCl4 −> 2MgCl2 + Sn , how many electrons are involved in the conversion of SnCl4 to Sn? 1. three 2. one
1. 1 answer
2. asked by Elva
3. 2,075 views
find a such that f(x)= ax2-4x+3 has a maximum value of 12
1. 1 answer
2. asked by bob
3. 1,978 views
Nitric acid is a component of acid rain that forms when gaseous nitrogen dioxide pollutant reacts with gaseous oxygen and liquid
1. 2 answers
2. asked by Lisa
3. 1,973 views
The population, p in thousands of bacteria colony can be modelled by the function p(t)=200+20t-t^2, where t is the time, in
1. 2 answers
2. asked by Anonymous
3. 1,950 views
The red squirrel population, p, in a neighborhood park can be modelled by the function p(t)= srqt(210t+44t^2), where t is time
1. 1 answer
2. asked by Anonymous
3. 1,928 views
a soccer player kicks a stationary ball giving it a speed of 20m/s at an angle of 15degrees to the horizontal. what is the
1. 2 answers
2. asked by ruby
3. 1,909 views
0.5123 g KHP sample was dissolved in about 25 mL of distilled water, and titrated to the phenolphthalein endpoint with 28.75 mL
1. 1 answer
2. asked by Cynthia
3. 1,811 views
Classify each as a lewis acid or lewis base...A)H20 B)O2- C)Cu2+ D)SO3 E)AlCl3
1. 3 answers
2. asked by Adam
3. 1,750 views
A flatbed truck is carrying a heavy crate. The coefficient of static friction between the crate and the bed of the truck is
1. 1 answer
2. asked by Anne
3. 1,683 views
Use the Law of Detachment to write a valid conclusion for the given information.1.If two angles are supplementary, then their
1. 1 answer
2. asked by Shadow
3. 1,678 views
A builder needs to connect a partially built house to a temporary power supply. On the plan, the coordinates of the house are
1. 1 answer
2. asked by Ted
3. 1,662 views
Two wires with the same resistance have the same diameter but different lengths. If wire 1 has length L1 and wire 2 has length
1. 0 answers
2. asked by Max
3. 1,635 views
An automobile engine slows down from 3500 rpm to 1100 rpm in 4.5 s.(a) Calculate its angular acceleration, assumed constant.
1. 1 answer
2. asked by mas
3. 1,528 views
A grinding wheel 0.62 m in diameter rotates at 2400 rpm.(a) Calculate its angular velocity in rad/s. rad/s (b) What are the
1. 1 answer
2. asked by mas
3. 1,498 views
zink and sulfur Express your answer as a chemical formula.I entered Zn+2,S-2 and it said this to me There is an error in your
1. 4 answers
2. asked by Lisa
3. 1,480 views
Piles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of snow at the ridge of a roof
1. 1 answer
2. asked by Anne
3. 1,466 views
Which African countries does the Tropic of Capricorn pass through? My answer is the African countries of Namibia, South Africa,
1. 1 answer
2. asked by Reed
3. 1,452 views
when are children first developmentally ready to begin learning science
1. 3 answers
2. asked by mike
3. 1,409 views
Find the range, standard deviation, and variance for the following sample data:98, 2, 53, 61, 15, 87, 63, 63, 91, 29, 96, 79,
1. 2 answers
2. asked by mary, can't figure out calculation, please show your calculations for all questions listed above a-e
3. 1,407 views
During the current year, Deborah Baronne, a single individual, paid the following amounts:Federal income tax $10,000 State
1. 1 answer
2. asked by austin
3. 1,372 views
A football is thrown with an initial upward velocity component of 15.0m/s and a horizontal velocity component of 18.0m/s .How
1. 2 answers
2. asked by Sam
3. 1,365 views
A carton lies on a plane tilted at an angle theta 29 degrees to the horizontal, with a friction of uk .12.If the carton starts
1. 1 answer
2. asked by Anne
3. 1,354 views
for english class i have to write a poem personifying something. I chose to personify a picture in a picture frame. I am not at
1. 1 answer
2. asked by claire
3. 1,340 views
Write a 200- to 300-word paper comparing long- and short-term financing. Describe situations in which each type of financing
1. 1 answer
2. asked by alexis
3. 1,327 views
i am located between the great lakes and the gulf of st. lawrence
1. 1 answer
2. asked by draculaura
3. 1,317 views
A grinding wheel 0.62 m in diameter rotates at 2400 rpm.(a) Calculate its angular velocity in rad/s. rad/s (b) What are the
1. 1 answer
2. asked by mas
3. 1,311 views
if 28x^3-36x^2+4x is divided by 4x then the quotient will be
1. 5 answers
2. asked by LaTrina
3. 1,307 views
sat scores around the nation tend to have a mean score around 500, a standard deviation of about 100 points and are
1. 4 answers
2. asked by please help in panic mode-mary
3. 1,295 views
Lithium hydride reacts with water as follows.LiH(s) + H2O(l) -->LiOH(aq) + H2(g) During World War II, U.S. pilots carried LiH
1. 1 answer
2. asked by amber
3. 1,282 views
A 20kg box rests on a rough floor. It takes a horizontal force of 40 N to keep the box sliding at a steady speed. Suppose a
1. 1 answer
2. asked by Nita
3. 1,270 views
A golf ball (mass 0.045 kg) is hit with a club from a tee. The plot shows the force on the ball as a function of time in
1. 1 answer
2. asked by Kaleigh
3. 1,248 views
What can be a qoute for scary sleepovers?
1. 5 answers
2. asked by Sumaiya
3. 1,229 views
If f is continuous on [-1, 1] and f(-1) = 4 and f(1) = 3, then there exists a number r such that |r| < 1 and f(r) = π. Can this
1. 1 answer
2. asked by sara
3. 1,228 views
i am having trouble writing the half reactions and the balancedequation for the galvanic cell Ag(s) |AgI(s) | I−(aq) ||
1. 1 answer
2. asked by brian
3. 1,222 views
Part BPiles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of snow at the ridge of a
1. 0 answers
2. asked by Anne
3. 1,198 views
Main mineral supplied by dairy products?
1. 2 answers
2. asked by Anna
3. 1,193 views
can someone show me how to do it step by step please!Use a graph and table to solve each system. check your answer {y+x=5
1. 2 answers
2. asked by Ren
3. 1,186 views
I am having a really hard time figuring this problem out. I need to see how it is worked. THANKS!
1. 3 answers
2. asked by Kasey
3. 1,169 views
Use Simpson's Rule with n=10 to estimate the arc length of the curve. Compare your answer with the value of the integral
1. 1 answer
2. asked by Morgan
3. 1,160 views
A study conducted by the Metro Housing Agency in a midwestern city revealed the information below concerning the age
1. 2 answers
2. asked by jack
3. 1,152 views
A sample of 300 is taken and the sample mean is computed to be 7.65 and the sample standard deviation is 5. Assume the data is
1. 0 answers
2. asked by Meh
3. 1,148 views
The escalator that leads down into a subway station has a length of 28.5 m and a speed of 1.6 m/s relative to the ground. A
1. 1 answer
2. asked by phillip
3. 1,132 views
tom scores 83,88,75, and 90 on the first 4 tests in algebra. what does he need to get on the 5th test to have an average of 85?
1. 2 answers
2. asked by matt
3. 1,130 views
Can someone please help to come up with a thesis statment for the "Great Gatsby" i wanna talk about alluring apperience and
1. 0 answers
2. asked by rainy
3. 1,125 views
what is the galvanic cell for the redox reaction between sodium dichromate and mercury(I) nitrate in an acidic solution.
1. 4 answers
2. asked by brian
3. 1,118 views
A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 15.5 m long. The bowler hears the sound
1. 2 answers
2. asked by Lynmarie
3. 1,107 views
Wolunteering at an orphanage.I have worked at an orphanage. There were a lot of work to do. I talked with children there and
1. 1 answer
2. asked by rfvv
3. 1,104 views
How will the relative number of moles of Mg and O be affected if the following procedural errors are made? Briefly explain(1)
1. 0 answers
2. asked by mariex3
3. 1,096 views
Given the following list from the activity series of metals (from most active to least active)K, Na, Al, Mn, Cr, Cd, Co, Pb, Hg
1. 2 answers
2. asked by Elva
3. 1,079 views
Please check itShaharzad is very brave and daring woman. She put her life on the death line to prove her point. Everyone has
1. 2 answers
2. asked by mujahid
3. 1,077 views
a train moving west at a velocity of 15m/s is accelerated steadily to 17m/s over a 12 second period what is the acceleration of
1. 2 answers
2. asked by cindy
3. 1,048 views
Which of the following is best described as anacid-base reaction? 1. 2HgO -> 2 Hg + O2 2. NH3 + H2O -> NH+4 + OH− 3. KCl +
1. 1 answer
2. asked by Elva
3. 1,031 views
y4 + xy = x3 – x + 84(a) Find dy/dx at the two points on the graph with x-coordinate 0. Hint: Set x=0 in the equation and
1. 1 answer
2. asked by pav
3. 1,004 views
In the triangle ABC, angle a=46 degrees and angle B=83 degrees. How large is the exterior angle at C?
1. 1 answer
2. asked by Maria
3. 983 views
use the normal distribution to approximate the desired probability.find the probability that in 200 tosses we will obtain at
1. 1 answer
2. asked by monique
3. 975 views
questions reads as follows:sat scores around the nation tends to have a mean score around 500, a standard deviation of 100
1. 1 answer
2. asked by mary
3. 965 views
The tension at which a fishing line snaps is commonly called the line's "strength." What minimum strength is needed for a line
1. 1 answer
2. asked by Anonymous
3. 957 views
What is the molarity of an unknown acid if 40.5 ml of the acid can be titrated to an end point by 20.5 ml of 0.2250 M NaOH?
1. 2 answers
2. asked by bev
3. 951 views
Communist Prison CampIn such prisons the total regimen, consisting of physical privation, prolonged interrogation total
1. 3 answers
2. asked by Rob
3. 951 views
what is the equation forC6H12O6+NaOH+Cu(OH)2 C6H12O6+AgNO3+NH4OH AgNO3+NH4OH+ galactose when heated
1. 0 answers
2. asked by flans
3. 947 views
A centrifuge rotor rotating at 13,000 rpm is shut off and is eventually brought uniformly to rest by a frictional torque of 1.30
1. 1 answer
2. asked by mas
3. 941 views
write a balanced chemical reaction for the reaction of aqueous magnesium chloride with aqueous potassium phosphate to form solid
1. 0 answers
2. asked by Jessica
3. 937 views
Jim Tree borrowed $1,000 at 10 percent for one year. He paid a $45 processing fee and $100 in interest. He calculated the APR to
1. 1 answer
2. asked by Ram
3. 933 views
sat scores around the nation tend to have a mean score of about 500, a standard deviation of 100 points and are approximately
1. 1 answer
2. asked by mary
3. 931 views
for a particular sample of 77 scores on a psychology exam the following results were obtained:first quartile=44 third quartile=
1. 1 answer
2. asked by please help in panic mode-mary
3. 931 views
really confused, A 2kg box is sliding east at 50m/s on a frictionless floor when it collides with a 4kg box sliding east at
1. 2 answers
2. asked by justin
3. 914 views
Atom A- 6 protons, 6 electrons, 7 neutronsAtom D- 6 protons, 6 electrons, 8 neutrons Atom X- 7 protons, 7 electrons, 8 neutrons
1. 3 answers
2. asked by timmy123
3. 913 views
FOR HOMEWORK I HAVE TO DO A NUMBER TRICK BY PICKING A NUMBER ADD 5 DOUBLE THE RESULT SUBTRACT 4 THEN DIVIDE THE RESULT BY 2 AND
1. 3 answers
2. asked by Alicia
3. 904 views
points P(4,12), Q(9,14), and R(13,4)are the three vertices of a rectangle.a. find the coordinates of the fourth vertex, S. b.
1. 0 answers
2. asked by Ted
3. 863 views
Locate the discontinuities of the function.y = 2/(1 + e^(1\/x))
1. 1 answer
2. asked by Tersa
3. 861 views
an iron ore sample was dissolved in Hydrochloric acid the iron was obtained as Fe2+. The solution was titrated with 41.08 mL of
1. 1 answer
2. asked by Laura
3. 856 views
This is my last exam, and I'm done with English!'At different times in A Separate Peace the weather seems to signal a change in
1. 2 answers
2. asked by mysterychicken
3. 855 views
3 M HCl solution was used to generate CO2 from the CaCO3 . What will bethe effect on the value reported for the molar volume of
1. 2 answers
2. asked by Megan
3. 850 views
The following details relates to the two machines X and Y:Machine X Machine Y Cost Estimated Life Estimated salvage value
1. 1 answer
2. asked by Neeraj
3. 832 views
A 4.52 kg block slides down a smooth, fric-tionless plane having an inclination of 31◦ . The acceleration of gravity is 9.8
1. 1 answer
2. asked by Alejandra
3. 830 views
find the range,standard deviation, and variance for the following sample date:98,2,53,61,15,87,63,63,91,29,96,79,93,40,5,62
1. 3 answers
2. asked by please help in panic mode-mary
3. 818 views
iatrochemistry-what is it? -who created it? (facts about him/her)
1. 1 answer
2. asked by Regina
3. 813 views
calculate the force on an airplane which has acquired a net charge of 180 C and moves with the speed of 180 m/s perpendicular to
1. 2 answers
2. asked by Anonymous
3. 805 views
One-fourth of length L is hanging down over the edge of a frictionless, table. The rope has an uniform, linear density (mass per
1. 2 answers
2. asked by Leshawn
3. 794 views
an item on sale for 30% off costs $179.99. what was the original price?
1. 3 answers
2. asked by man
3. 786 views
Liver alcohol dehydrogenase (ADH) is a nonspecific enzyme. Its normal substrate is ethanol but it will oxidize other primary
1. 2 answers
2. asked by LostonEnzymes
3. 783 views
describe different coping and support strategies for dealing with stress related medical issues. Include the following
1. 1 answer
2. asked by mari
3. 773 views
When calcium oxelate is treated with an acidic solution of potassium permanganate, the following reaction occurs:CaC2O4(s) +
1. 2 answers
2. asked by Sheila
3. 771 views
A school's administrators are concerned about absenteeism at their schooland the e ect it has on students' grades. The following
1. 1 answer
2. asked by lisa
3. 766 views
Four people, each with a mass of 72.7 kg, are in a car with a mass of 1110 kg. An earthquake strikes. The driver manages to pull
1. 0 answers
2. asked by tom
3. 759 views
A 70.8mL sample of "wet" O2(g) is collected over water at 29.9 degrees Celsius at a barometric pressure of 743 mmHg. The vapour
1. 2 answers
2. asked by Jon
3. 757 views

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