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2011
March
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March 5, 2011
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Gas is escaping from a spherical balloon at the rate of 2ft^3/min. How fast is the surface area shrinking (ds/dt)
9 answers
asked by
Hannah
10,816 views
A 65-kg boy is sitting on a seesaw 0.6 m from the balance point. How far from the balance point should a 40-kg girl sit so that
2 answers
asked by
bhavana
3,347 views
Which of the following statements is true for an elastic collision?
A. Both momentum and kinetic energy are conserved. B.
1 answer
asked by
Joe
3,194 views
A spiral spring is compressed so as to add U units of potential energy to it.
When this spring is instead stretched two-thirds of
2 answers
asked by
Joe
2,964 views
A force of magnitude 7.50 N pushes three boxes with masses m1=1.30kg m2=3.20kg, and m3=4.90kg. find the magnitude of the contact
1 answer
asked by
Betty
2,526 views
how do I prepare 50% and 70% ethanol from 95% ethanol?
2 answers
asked by
michelle
2,519 views
Determine the delta H for the following reaction
C3H4(g) + 2H2(g) --> C3H8(g)
2 answers
asked by
belle
2,514 views
5. A tin nucleus has charge +50e. Find the potential V at a distance of 10-12 meters from the nucleus and the potential energy U
3 answers
asked by
ike
2,421 views
Which of the following statements is true for an inelastic collision?
A. Both momentum and kinetic energy are conserved. B.
1 answer
asked by
Joe
2,364 views
When the thigh is fractured, the patient's leg must be kept under traction. One method of doing so is a variation on the Russell
1 answer
asked by
nancy
2,158 views
The molecules water (H2O) and methane (CH4) have similar masses, but methane changes from a gas to a liquid at -161°C. Water
1 answer
asked by
Anonymous
2,142 views
Write an equation that forms a system of equations with x + y = 4, so that the system has:
a) No solution b) Infinitely many
3 answers
asked by
Rebecca
2,098 views
The peak value of the ac current in a circuit is 6.0 A, and peak value of the ac voltage applied to the circuit is 8.9 V. What
2 answers
asked by
YANA
1,935 views
You drop an egg from rest with no air resistance.
As it falls, a. only its momentum is conserved. b. only its kinetic energy is
1 answer
asked by
Joe
1,820 views
Two lumps of clay having equal masses and speeds, but traveling in opposite directions, collide and stick together. Which of the
2 answers
asked by
Joe
1,791 views
1)
You have opened your own word-processing service. You bought a personal computer, and paid $5,000 for it. However, due to the
2 answers
asked by
Michael
1,705 views
Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the
2 answers
asked by
Joe
1,642 views
8. Determine the acceleration of a proton in an electric field of 500 N/C. How many times is this greater than that due to
2 answers
asked by
ike
1,637 views
A picture measures 20 cm x 25 cm. The width of the matting and frame at the top and bottom is 5cm. What should be the dimensions
3 answers
asked by
Jenny
1,596 views
A water sample saturated in CaF2 has Ca2+ of 115 ppm (115g Ca2+ per 10^6g water sample). What is the F- ion content of the water
1 answer
asked by
Jenny
1,558 views
The products for the following: CaCl2(aq) + K2CO3(aq) �¨
A. CaCO3(s) + 2KCl(aq) B. CaCO3(aq) + 2KCl(s) C. none of these D. no
1 answer
asked by
Hellen
1,551 views
A garden has the shape of a right triangle with one leg 3 meters longer tha the other. The hypotenuse is 3 meters less than
2 answers
asked by
Achillies
1,520 views
Given a quadratic equation in the form y = ax2 +bx +c , and four choices of graphs representing that equation, how can you tell
2 answers
asked by
mimi
1,507 views
uestion: Five cards are dealt from standard deck of 52 cards, what is the probability of being dealt 3 kings?
Here is what I have
1 answer
asked by
marco
1,476 views
A glider airplane is coasting horizontally when a very heavy object suddenly falls out of it.
As a result of dropping this
1 answer
asked by
Joe
1,386 views
How many solutions does the following system have:
2x + 5y = 10 3x + 6y = 12 Explain how to determine the number of solutions
1 answer
asked by
Kathy camkat
1,381 views
1) What are the 3 basic forms of energy?
Since there are so many, I'm thinking of kinetic and potential, but what would be the
3 answers
asked by
kriti
1,381 views
multiple questions:
1- Computers are connected to the internet through a)direct connection b)dial up connections through modems
7 answers
asked by
sweety
1,302 views
A heavy rifle initially at rest fires a light bullet.
Which of the following statements about these objects is true? A. The
0 answers
asked by
Joe
1,250 views
A person's height, eye color, and skin tone are all examples of?
1 answer
asked by
Jess
1,238 views
if a 100g sample of water at 60.0 C is added to a 100.0 g sample of water at 10.0 C, determine the final temperature of the
2 answers
asked by
emily
1,194 views
So I posted something like this about my introductory paragraph. I have my conclusion and was wondering if you could tell me if
2 answers
asked by
Hans
1,190 views
I need an apa format paper about "How does smoking affect the environment"?
1 answer
asked by
Kami
1,189 views
Find the volume in liters.
6.5kg of a substance with a density of 7.96g/mL Im confused about how it would come out in liters.. if
1 answer
asked by
tammie
1,186 views
5: You are attending a professional conference and are privileged to be introduced to Caroline Peters. You know nothing about
4 answers
asked by
Jay
1,181 views
How did India experience that arrival of the British, in light of the past?
How did India experience the British domination? How
3 answers
asked by
Jenny
1,154 views
What is the [OH-] for a solution at 25°C that has [H3O+] = 8.23 × 10-2 M?
0 answers
asked by
richard
1,149 views
For the reaction: C4H10 + O2 �¨ CO2 + H2O ( is this balanced?) , how many moles of CO2 is formed when 5.00 moles C4H10 reacts
1 answer
asked by
Ivy
1,136 views
You pull a short refrigerator with a constant force across a greased (frictionless) floor, either with horizontal (case 1) or
1 answer
asked by
karim
1,130 views
how will u prepare 500g of aqueos solution which is 10% NaOH by mass?(%W/W)
1 answer
asked by
yui
1,101 views
Three small lamps are connected to a 24 V
battery, as shown in the figure. Assume the battery is ideal (has no internal
1 answer
asked by
Anonymous
1,095 views
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 27 m/s, the block
0 answers
asked by
Julius
1,080 views
Determine the equivalent capacitance between A and B for the group of capacitors in the drawing. Let C1 = 12 µF and C2 = 4.0
2 answers
asked by
YANA
1,073 views
"For Richard, a life's meaning is in the independence of the individual. Thtat means that Richard sees life as a quest for
2 answers
asked by
Aesha
1,054 views
A proton with a speed of 4.20×104 km/s makes an elastic head-on collision with a stationary carbon nucleus. We can look up the
1 answer
asked by
Joe
1,046 views
Please review the following case and use it as the basis for your analysis for this unit. Pay careful attention to the situation
0 answers
asked by
lee
1,034 views
So first off i want to say writing essays are not in my strengths. so i was wondering if someone could read my intro paragraph
1 answer
asked by
jim
1,015 views
A 1220 kg car rounds a circular turn of radius 19.2 m. If the road is flat and the coefficient of static friction between the
4 answers
asked by
Jen
980 views
in a exothermic reaction ________ energy is converted to ________ energy.
A. potential, kenetic B. kinetic, potential C. thermal,
1 answer
asked by
emily
964 views
How do I find how many grams of CH3COOH are present in cm^3 of vinegar? Also, how many moles of CH3COOH are present in 2.5 cm^3
1 answer
asked by
Steven
959 views
Calculate the distance (in km)that Larry runs if he maintains an average speed of 8km/hr for 45 minutes.
1 answer
asked by
Roger
935 views
What is the maximum area of a rectangle area with a fixed perimeter of 80 ft?
2 answers
asked by
Anonymous
931 views
I am doing a formal paper about the book The Great Gatsby and how the character's American Dreams cause them to have pain when
3 answers
asked by
Hans
930 views
Explain how you would create the users for the sales organization unit and how to set up
work groups in this particular
0 answers
asked by
diann
896 views
what is a standard solution? and what is a function of an indicator in a titration?
2 answers
asked by
Nancy
886 views
Express y=[4x-x^3]/[3x^2+2)^2 as a product and then differentiate. Simplify your answer using positive exponents. Help Please!
1 answer
asked by
lo
872 views
Consider the illustration, which shows a rotating beam of light located 0.5 mile from a shoreline. The beam rotates at a rate of
5 answers
asked by
Tori
862 views
Suppose the tangent of an acute angle in a right triangle is less than 1. How does the side opposite the angle compare to the
1 answer
asked by
Naomi
839 views
A 20.0 ml sample of an unknown HCl solution requires titration with 15.0ml of 0.1MNaOH solution to reach equivalent point. What
0 answers
asked by
Aaron
810 views
What is the molar solubility of Fe(OH)3(s) in a solution that is buffered at pH 2.75? The Ksp of Fe(OH)3 is 6.3 × 10-38.
1 answer
asked by
Sarah
799 views
A computer is reading data from a rotating CD-ROM. At a point that is 0.032 m from the center of the disc, the centripetal
4 answers
asked by
Julius
784 views
The equilibrium constant for the reaction is 37 at a certain temperature.
2H2(g) + CO(g)<==> CH3OH(g) If there are .0293 moles of
2 answers
asked by
Raeyna
734 views
For the reaction: H2(g) + Cl2(g) �¨ HCl(g) (is this balanced?) calculate the mass, in grams of H2 needed to react with 25.0g
0 answers
asked by
Anthony
721 views
assess an infant,Discuss at least two social factors that are impacting the health of your client. Be certain to specifically
1 answer
asked by
Sree
720 views
Calculate the mass in grams for a gold sample that absorbs 245J to change its temperature from 19 degrees to 49 degrees
1 answer
asked by
Wendy
719 views
A mini-computer system contains two components, A and B. The system will function so long
as either A or B functions. The
1 answer
asked by
Paula
716 views
An unknown gas has a molecular weight of 30.07 g/mol. What is the density of the gas at STP?
2 answers
asked by
lauren
711 views
What is the molar solubility of Fe(OH)3(s) in a solution that is buffered at pH 2.75? The Ksp of Fe(OH)3 is 6.3 × 10-38.
2 answers
asked by
Sarah
706 views
Look for two programs that appeal to you at Education Planner and complete the chart below for each program.
Program Name 1:
1 answer
asked by
Anonymous
685 views
What are some things that start with or have x and y in them that can be found in Sudan? I've looked EVERYWHERE. Except Sudan
3 answers
asked by
Catherine
684 views
If the current is composed of Na+ ions (q = +e), how many such ions flow in 0.7 s?
1 answer
asked by
YANA
681 views
What is the midpoint of the line segment connecting the points (2,- 3)and (4,9)?
1 answer
asked by
may
681 views
3 pipes are used to fill apool with water .Individually they can fill that pool in 9hr ,6hr ,3hr .how many minutes will it take
1 answer
asked by
rob
665 views
Cart A, of mass 3.00 kg, approaches and collides with cart B, which has a mass of 7.00 kg and is initially at rest.
When the
1 answer
asked by
Joe
660 views
Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the
0 answers
asked by
Joe
659 views
What events and factors have contributed to problems in South East Europe? IS there a website for this?
3 answers
asked by
Alyonka
656 views
How did India experience that arrival of the west, in light of the past?
How did India experience the western domination? How did
2 answers
asked by
Jenny
655 views
Complete the following statements about the measures of angles in the figure shown, where and state the generalization that
1 answer
asked by
Brandi
653 views
(Part 2) Include the steps involved in transmitting the impulse “microscopically” through an individual neuron, from one
1 answer
asked by
Kristy
648 views
a)If the Keq for the esterification of acetic acid with isopentyl alcohol is 3.0, what is the maximum amount of isopentyl
1 answer
asked by
Tony
646 views
A 5.10-g sample of iron is heated from 36.0 C to 75.0 C. The amount of energy required is 89.5 J. the specific heat capacity of
1 answer
asked by
emily
643 views
I have this one question that is giving me some trouble trying too figure out. Could one please help me with this one question.
B
2 answers
asked by
David
639 views
Which statement about Attorney General Palmer is true?
A) He criticized President Wilson's decision to release Eugene Debs B) As
1 answer
asked by
sharice
627 views
Examples of how are critical thinking skills affected by long term memory?
1 answer
asked by
mistagirl1124
626 views
Tarzan tries to cross a river by swinging from one bank to the other on a vine that is 8.8 m long. His speed at the bottom of
1 answer
asked by
Ryan
619 views
Hey guys just needed to clarify on some key points on Artificial Intelligence.
What are the types of AI? I think it's weak and
1 answer
asked by
Shivi
611 views
Please review the following case and use it as the basis for your analysis for this unit. Pay careful attention to the situation
0 answers
asked by
lee
604 views
Calculate the volume of distiled water to prepare 10%w/v solution of solute if 8g of the solute is to be used.
0 answers
asked by
yui
602 views
I'm doing a project for social studies, and I want to know if the African Queen Lily grows in Sudan. Please help!
3 answers
asked by
Catherine
602 views
IF A HYPOTENUSE HAS A RATIO OF 1;2 AND THE ALTITUDE IS SIX WHAT DO I DO TO SLOVE THIS PROMBLEM
1 answer
asked by
Anonymous
593 views
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 27 m/s, the block
0 answers
asked by
Julius
590 views
A student score 78 on his statistics test where the average score was 90 the the standard deviation was 7.
1 answer
asked by
Barbara
588 views
whaen comparing the flow of lymph in the lymphatic system with the flow of blood in the circulatory system, it can be said that
0 answers
asked by
lillian
587 views
What is the molarity of CuCl2 solution that completely reacts with 10.0g of zinc , if the volume of the solution is 360mls?
Zn(s)
0 answers
asked by
Tim
586 views
10. A length L of wire has a charge density of C/m. What is the electric field at an axial distance r from the wire if L is
1 answer
asked by
ike
573 views
what is the variance and standard deviation for the group of numbers:
28 27 48 52 77 29 30 31 60
1 answer
asked by
Barbara
570 views
Can you help me define persuasive thinking?
1 answer
asked by
patiance
568 views
what is your opinion of leadership?
I think leadership isn't always about being outspoken and holding a high position in an
1 answer
asked by
Amy
567 views
It is known from experience that in a certain industry 40 percent of all labour-management disputes are over wages, 40 percent
0 answers
asked by
Paula
563 views
I was on the CIA world factbook and it said that interethnic warfare was a problem...what does that mean?
15 answers
asked by
Alyonka
561 views
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