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Questions Asked on October 8, 2010

a weightlifter raises a 200-kg barbell with an acceleration of 3 m/s. How much force does the weightlifter use to raise the
1. 6 answers
2. asked by anoynomous
3. 6,638 views
Complete and balance each of the following equations for gas-evolution reactions. HNO3(aq) + Li2S produces ? Express your answer
1. 2 answers
2. asked by Anonymous
3. 4,314 views
The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 4.5 m/s, what is
1. 3 answers
2. asked by Jordan
3. 3,218 views
A bullet of mass 1.9×10−3 kg embeds itself in a wooden block with mass 0.987 kg, which then compresses a spring (k = 120 N/m)
1. 2 answers
2. asked by Bartholomew
3. 3,012 views
A 200 mL sample of 1.0 M nitric acid is added to 1.0 M water. What is the resulting pH?
1. 3 answers
2. asked by Anonymous
3. 2,931 views
A poorly designed playground slide begins with a straight section and ends with a circular arc as shown in the figure below.img7
1. 3 answers
2. asked by Genevieve
3. 2,908 views
an anti aircraft shell is fired vertically upward with a muzzle velocity of 200 m/sec. Compute theinstantaneous velocities at
1. 6 answers
2. asked by Rita
3. 2,898 views
1. On-the-scene coverage of a natural disaster is an example of the press’s role ofa. watchdog. b. signaler. c. partisan
1. 4 answers
2. asked by Anonymous
3. 2,830 views
A 747 jet, travelling at a speed of 70 m/s, touches down on a runway. The jet slows to rest at the rate of 2.0 m/s^2. Calculate
1. 6 answers
2. asked by elana
3. 2,803 views
an astronaut standing on a platform on the moon drops a hammer. if the hammer falls 6.0 meters vertically in 2.7 seconds, what
1. 2 answers
2. asked by elana
3. 2,796 views
A boat initially traveling at 10 meters per second accelerates uniformly at the rate of 5.0 meters per second squared for 10
1. 2 answers
2. asked by Josh
3. 2,514 views
parents donated fudge for the fund raiser for your classroom. 40 pounds of chocolate fudge sold for $2.15 per pound and vanilla
1. 4 answers
2. asked by pakeech
3. 2,442 views
A small, 300g cart is moving at 1.60m/s on an air track when it collides with a larger, 2.00kg cart at rest. After the
1. 2 answers
2. asked by mike
3. 2,245 views
Correct the error in this equation:6(2y+6)=4(9+3y) 12y+36=36+12y 12y=12y 0=0 y=0
1. 4 answers
2. asked by Roger
3. 2,237 views
A cat climbs 20 m directly up a tree.What is the horizontal component of the cat’s displacement? Answer in units of m.
1. 1 answer
2. asked by pauly
3. 2,111 views
A steel ball is dropped from a building's roof and passes a window, taking 0.13 s to fall from the top to the bottom of the
1. 1 answer
2. asked by monnie
3. 1,812 views
An interest group that focuses on policy benefits for senior citizens would be an example of a(n)a. philosophical interest
1. 3 answers
2. asked by Anonymous
3. 1,807 views
Your body deals with excess nitrogen by excreting it in the form of urea, NH2CONH2. The reaction producing it is the combination
1. 4 answers
2. asked by Joey
3. 1,785 views
you find it takes 200N of horizontal force to move an empty pickup truck along a level road at a speed of 2.4m/s. you then load
1. 4 answers
2. asked by ashley
3. 1,650 views
An antelope moving with constant acceleration covers the distance between two points 70.0m apart in 7.00 s. Its speed as it
1. 2 answers
2. asked by meera
3. 1,632 views
Is it possible to bend a 20cm length of wire into the shape of a rectangle which has an area f 30cm^2?I don't know how to
1. 1 answer
2. asked by Anonymous
3. 1,629 views
I need help with this question...A skateboarder, starting from rest, rolls down a 12.0-m ramp. When she arrives at the bottom of
1. 2 answers
2. asked by Nancy
3. 1,624 views
Disulfur dichloride, S2Cl2, is used to vulcanize rubber. It can be made by treating molten sulfur with gaseous chlorine:S8(l) +
1. 1 answer
2. asked by Megan
3. 1,588 views
12 light bulbs are tested to see if they last as long as claimed. 3 of them fail. 2 light bulbs are selected at random without
1. 1 answer
2. asked by Mark
3. 1,569 views
Could someone please walk me through step by step on how to do this.Propane (C3H8) burns in oxygen to produce carbon dioxide and
1. 3 answers
2. asked by Jennifer
3. 1,525 views
The reaction of methane and water is one way to prepare hydrogen:CH4(g) + H2O(g) --> CO(g) + 3 H2(g) [Molar masses: 16.04 18.02
1. 3 answers
2. asked by Rachel :)
3. 1,501 views
1. During 60mi of city driving, Jenna averaged 15mi/gal. She then drove 140mi on an expressway and averaged 25mi/gal for the
1. 2 answers
2. asked by Jessica
3. 1,454 views
what is the net ionic equation for FeSO4 + KCl = FeCl2 + K2SO4?
1. 1 answer
2. asked by Anonymous
3. 1,431 views
Aqueous sulfurous acid (H2SO3) was made by dissolving .200L of sulfur dioxide gas at 19 degrees C and 745 mmHg in water to yield
1. 1 answer
2. asked by Missy*
3. 1,421 views
After several drinks, a person has a blood alcohol level of 200 mg/dL (milligrams per deciliter). If the amount of alcohol in
1. 0 answers
2. asked by liz
3. 1,383 views
19. Burning coal and oil in a power plant produces pollutants such as sulfur dioxide, SO2. The sulfur-containing compound can be
1. 1 answer
2. asked by Megan
3. 1,357 views
He is the lightest noble gas component of air, and Xe is the heaviest. Perform the following calculations, using
1. 2 answers
2. asked by Missy*
3. 1,282 views
A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. The
1. 0 answers
2. asked by Bartholomew
3. 1,251 views
An open box contains 80cm^3 and is made from a square piece of tinplate with 3cm squares cut from each of its four corners. Find
1. 0 answers
2. asked by Anonymous
3. 1,248 views
The statement is If a number is divisible by 2 and by 3, then it is divisible by 6 and vice versa. Is this statement true? Give
1. 1 answer
2. asked by m
3. 1,242 views
Use proof by contraposition to prove the following statement:If A is the average of two positive real numbers then one of the
1. 1 answer
2. asked by Anna
3. 1,211 views
You are piloting a small plane, and you want to reach an airport 450 km due south in 2.0 hours. A wind is blowing from the west
1. 1 answer
2. asked by alivia
3. 1,210 views
A 25g sample of a compound composed of Carbon, Hydrogen, and Oxygen was combusted. 55grams of Carbon Dioxide and 30 grams of
1. 2 answers
2. asked by Olga
3. 1,204 views
There are 8 word cards on the blackboard. On one side there are English words, and on the other side, there are Korean words.
1. 1 answer
2. asked by rfvv
3. 1,202 views
A baker uses sodium hydrogen carbonate as the leavening agent in a banana nut quickbread. the baking soda decomposes according
1. 1 answer
2. asked by Missy*
3. 1,198 views
a 2000kg rocket has a rocket motor thast generates 3.0 x 10^5 N of thrust.What is the rockets initial upward acceleration ? ( I
1. 2 answers
2. asked by Psuedia
3. 1,196 views
Hi I have some graph problems I need help on.Sketch a graph of velocity vs. time. A cart is moving to the right on a horizontal
1. 0 answers
2. asked by jen
3. 1,164 views
Compute the number of vinyl tiles, measuring 8 in each side, needed to tile a kitchen measuring 24ft by 18ft.Area of
1. 3 answers
2. asked by Linda
3. 1,161 views
A baker uses sodium hydrogen carbonate as the leavening agent in a banana nut quickbread. the baking soda decomposes according
1. 1 answer
2. asked by Stacey
3. 1,150 views
In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the
1. 2 answers
2. asked by Joseph
3. 1,142 views
write a paragraph describing the location of the New York City on the map of the New York State using compass rose
1. 5 answers
2. asked by tim
3. 1,141 views
I have 2 problems that I need solved. Can someone please help me?t+36t=0 second problem T^2-7t+12=0 Can you show me the steps
1. 1 answer
2. asked by barbHELP!!!!
3. 1,123 views
Between 11 P.M. and midnight on Thursday night, Mystery Pizza gets an average of 4.2 telephone orders per hour.Find the
1. 1 answer
2. asked by mnmn
3. 1,108 views
2. The overall message of "To Every Thing There Is A Season" isa. every human emotion and activity has an appropriate time in
1. 1 answer
2. asked by mysterychicken
3. 1,102 views
the vapour pressure of pure water at 110 degrees is 142.7kpa. a solution of ethylene glycol and water has a vapour pressure of
1. 3 answers
2. asked by lucylu
3. 1,068 views
A small rocket is launched vertically, attaining a maximum speed at burnout of 1.0 102 m/s and thereafter coasting straight up
1. 2 answers
2. asked by Preetha
3. 1,055 views
an iron ore contains 50.0% Fe2O3. How many grams of pure iron could be contained from 200 grams of this ore?
1. 3 answers
2. asked by vsk
3. 1,047 views
A toy rocket is launched upwards from rest. The rocket engine will cause the rocket to accelerate at 25 m/s^2 for 3.0 seconds.a)
1. 0 answers
2. asked by Sam
3. 1,037 views
Members of the Computer Club were assessed equal amounts to raise $1200 to buy some software. When 8 new members joined, the
1. 2 answers
2. asked by Jessica
3. 1,032 views
A bacteria culture starts with 1,000 bacteria and doubles in size every 2 hours. Find an exponential model for the size of the
1. 1 answer
2. asked by liz
3. 1,028 views
Juan says, "When you put together unequal groups, you can only add." Is he correct?
1. 3 answers
2. asked by Anonymous
3. 1,028 views
is it possible to construct a triangle with these given side lengths 6,10,15
1. 2 answers
2. asked by she
3. 1,020 views
A ship maneuvers to within 2500m of an island's 1800m high mountain peak and fires a projectile at an enemy ship 610m on the
1. 0 answers
2. asked by Sydney
3. 1,018 views
Find the average kinetic energy per molecule of He at 30 degrees C
1. 3 answers
2. asked by Stacey
3. 1,015 views
You propose to build a space ship that allows the entire population of the United States (280 million) to leave earth. Your
1. 0 answers
2. asked by math word problem
3. 1,012 views
A basketball is thrown at 45° to the horizontal. The hoop is located 4.5m away horizontally at a height of 1m above the point
1. 4 answers
2. asked by applebottom
3. 1,007 views
The motor of a ski boat generates an average power of 7.30 104 W when the boat is moving at a constant speed of 10 m/s. When the
1. 1 answer
2. asked by Tzana
3. 998 views
Members of the _____ generate more mail to Congress than any other group.a. NRA b. ACLU c. NAACP d. AARP e. NEA I cannot find
1. 6 answers
2. asked by Anonymous
3. 996 views
Outside lobbying does not include the use ofa. developing and maintaining close contacts with policymakers. b. campaign
1. 6 answers
2. asked by Anonymous
3. 985 views
At a production level of 1400 items, the total cost is $7250 and the marginal cost is $25. Use this information to estimate the
1. 1 answer
2. asked by ana
3. 978 views
please can you help me in this:Ethical Systems Table Ethical Systems Table Directions: 1. Fill in brief definitions of each
1. 1 answer
2. asked by Green grass
3. 968 views
what properties of sugar change when it is dissolved in water? what properties stay the same
1. 2 answers
2. asked by Jon
3. 966 views
Does culture have a relationship to health service utilization? Why?
1. 1 answer
2. asked by kit
3. 961 views
Jason walked 9/10 of a mile. Justin walked 5 3/10 of a mile. What is the difference?
1. 2 answers
2. asked by Lily
3. 947 views
A buffer solution is 1.00 M in NH3 and 1.10 M in NH4Cl. If 0.230 moles of NaOH are added to 1.00 L of the buffer, what is its
1. 1 answer
2. asked by nick
3. 942 views
A 72.0 kg piece of a satellite left over from an explosion with zero orbital velocity in space falls from a distance of 190
1. 6 answers
2. asked by marie
3. 936 views
You build a box that is 4 feet long, 5 feet wide, and 8 feet high. The distance from the top left front corner to the top right
1. 1 answer
2. asked by math
3. 930 views
express liquid pentanol and gaseous oxygen as a chemical reaction
1. 2 answers
2. asked by bob
3. 920 views
Let C(q) represent the cost, R(q) the revenue, and π(q) the total profit, in dollars, of producing q items.a) If C′(67) = 65
1. 1 answer
2. asked by molly
3. 910 views
Zach, whose mass is 69 kg, is in an elevator descending at 10 m/s. The elevator takes 2.5 s to brake to a stop at the first
1. 1 answer
2. asked by Anonymous
3. 909 views
I need to calculate the density, with work shown.50.0 mg of a gas which occupies a volume of 0.0064 L ?
1. 1 answer
2. asked by alisha
3. 897 views
You deposit $70 in a savings account that pays an annual interest rateof 3%. How much simple interest would you earn in 2.5
1. 2 answers
2. asked by peaches
3. 891 views
After several drinks, a person has a blood alcohol level of 200 mg/dL (milligrams per deciliter). If the amount of alcohol in
1. 0 answers
2. asked by liz
3. 883 views
What is the frequency of a photon resulting from the transition of n = 7 �¨ n = 1 ?
1. 2 answers
2. asked by John
3. 882 views
The following table gives the cost and revenue, in dollars, for different production levels, q. Answer the questions below.q 0
1. 0 answers
2. asked by ana
3. 881 views
what numbers have both of the given numbers as factors 3 and 5
1. 1 answer
2. asked by Ricky
3. 868 views
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 25.0° below the horizontal. The negligent
1. 0 answers
2. asked by Anonymous
3. 864 views
A price (in dollars) and demand for a product are related by2x^2-5xp+50p^2=21200 If the price is increasing at a rate of 2
1. 0 answers
2. asked by Michelle
3. 862 views
Functions are a lot like equations. In a function we look at the relationship of the variables. Does one variable depend on the
1. 2 answers
2. asked by trudy
3. 848 views
I really need help... You are on a treasure hunt and your map says "Walk due west for 52 paces, then walk 29.0° north of west
1. 1 answer
2. asked by Angie
3. 846 views
if the measure of two pairs of supplementary angles are added together, then the sum will equal 360 degree.true or false? then
1. 0 answers
2. asked by Skylar
3. 846 views
give five examples of idiomatic sentences
1. 1 answer
2. asked by Anonymous
3. 842 views
Is this a scientific theory or scientific law?Heating the air in a hot-air balloon causes the balloon to rise.
1. 1 answer
2. asked by Tech Tiger
3. 835 views
I am a 2 digit numberI am a multiple of 6 My 10's digit is one 1/2 my units digit
1. 5 answers
2. asked by Missy
3. 825 views
John Leo's article,"when life imitates video"argure whether or not he makes a persuasive case that video games are responsible
1. 2 answers
2. asked by purvi
3. 821 views
An arrow is launched vertically upward from a crossbow at 98.2 m/s. Ignoring air friction, what is its instantaneous
1. 3 answers
2. asked by Connie
3. 821 views
In the Haber-Bosch process, nitrogen and hydrogen gas are reacted under high temperature 500 degrees C and pressure 200 atm to
1. 1 answer
2. asked by Missy*
3. 818 views
The boy on the tower of height h = 20 m in the figure below throws a ball a horizontal distance of x = 56 m. At what speed, in
1. 3 answers
2. asked by V
3. 816 views
A new software company wants to start selling DVDs with their product. The manager notices that when the price for a DVD is 20
1. 0 answers
2. asked by kim
3. 799 views
Find an example of application of Normal Distribution (or approximately Normal Distribution) in your workplace or business (or
1. 1 answer
2. asked by Kathy
3. 783 views
from Sinners in the Hands of an Angry God- according to the sermon, what keeps sinners out of the fiery "pit of hell"?
1. 0 answers
2. asked by elana
3. 782 views
2. The excursion boat Holiday travels 35km upstream and then back again in 4h 48min. If the speed of the Holiday in still water
1. 1 answer
2. asked by Jessica
3. 780 views
can you answer this please about sums and differences of a rational algebraic expression this is the problem 5/x-7 - x-1/x-7 -
1. 2 answers
2. asked by jazmin
3. 780 views
1. Scholars have done the least study into the political influence of _____ on American citizens.a. churches b. families c.
1. 1 answer
2. asked by kenji
3. 776 views
Find the requested function and state its domain:f(x)= 4x+3 g(x)=4x-5 Find f/g and its domain. So I did 4x+3/4x-5, so the 4x's
1. 1 answer
2. asked by Hannah
3. 768 views

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