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Questions Asked on May 11, 2012

Using a swimming pool, two students decide to test the water by setting up an interference pattern at one end of the 50 m pool.
1. 1 answer
2. asked by Asif
3. 942 views
If you throw a ball against a wall, which of the three impulses is the greatest: throw, bounce, or catch?I think it would be the
1. 2 answers
2. asked by dreamygirl
3. 799 views
How is it possible for an object to obtain a larger impulse from a smaller force than from a larger force?i have no clue how
1. 1 answer
2. asked by dreamygirl
3. 887 views
How is it possible for an object to obtain a larger impulse from a smaller force than from a larger force?i have no clue how
1. 2 answers
2. asked by dreamygirl
3. 1,735 views
Two balls collide on a horizontal, frictionless table. Ball A has a mass of 0.175 kg and travelling at 1.20 m/s [E 40o S]. Ball
1. 1 answer
2. asked by myra
3. 702 views
I'm doing a unit on volume and surface area. So there's a diagram that shows a fish tank after a container of water is poured
1. 2 answers
2. asked by riley
3. 619 views
A 0.250 kg ball is thrown straight upward with an initial velocity of 38 m/s. If air friction is ignored, calculate the:(a)
1. 2 answers
2. asked by blue ivy
3. 993 views
The rate constant, k, for each reaction order is equal to _____ from the linear plot.Reaction Order Answer zero:___ first: ___
1. 0 answers
2. asked by jen
3. 393 views
For each reaction,which ion in the precipitate was responsible for the color1-reaction of Sodium Hydroxide and Copper(II)Sulfate
1. 1 answer
2. asked by Marie
3. 1,675 views
Which of the following represents a “soft” dimension of change? (Points : 1)Systems Strategies Employee motivation
1. 1 answer
2. asked by Nadne
3. 363 views
In this sentence: Ms. Evans asked,''Trish, do you know why clouds change shape? '' is the word you a subject pronoun or an
1. 1 answer
2. asked by India
3. 496 views
In the 1950s, an experimental train that had a mass of 3.30 104 kg was powered across level track by a jet engine that produced
1. 1 answer
2. asked by Haley
3. 1,188 views
A 4.00 103-kg car has a speed of 9 m/s. The car then hits a tree. The tree doesn't move and the car comes to rest.(a) Find the
1. 1 answer
2. asked by Haley
3. 563 views
A 15.0-kg test rocket is fired vertically from Cape Canaveral. Its fuel gives it a kinetic energy of 1961 J by the time the
1. 1 answer
2. asked by Haley
3. 7,050 views
An archer puts a 0.26-kg arrow to the bow-string. An average force of 200 N is exerted to draw the string back 1.4 m.(a)
1. 3 answers
2. asked by Haley
3. 718 views
A 1.60-g bullet, moving at 542 m/s, strikes a 0.249-kg piece of wood at rest on a frictionless table. The bullet sticks in the
1. 2 answers
2. asked by Alica
3. 634 views
A 1280-kg car starts from rest and accelerates to 80 km/h in 23.0 s. Friction exerts an average force of 449 N on the car during
1. 2 answers
2. asked by Alica
3. 745 views
survey showing the IQ of each person interviewed and the IQ of his or her mother. That is all the information you have. Your
1. 2 answers
2. asked by Anonymous
3. 904 views
what do macrophages have to do with coplement proteins
1. 1 answer
2. asked by Matt
3. 341 views
for WFE book i hve some questionsin chapter 8 jcob say he not ready to be old yet, tell what he mean by this, what determine
1. 5 answers
2. asked by Mohammad
3. 427 views
WFE questionin chap 8 jacob look at himself in mirror but he say he not find himself anymore. "when i stop being me?" how u
1. 2 answers
2. asked by Mohammad
3. 440 views
the length of a rectangle is 5 centimeters more than twice its width. if the perimeter of the rectangle is 94 centimeters, what
1. 1 answer
2. asked by Michael
3. 853 views
An 21.0 , 12.0 , and 5.0 resistor are connected in series with an emf source. The current in the 12.0 resistor is measured to be
1. 1 answer
2. asked by dan
3. 537 views
A beaker contains 100 mL of water. We add 112 mg of KOH(s). What is the concentration of H+ions?
1. 1 answer
2. asked by Sarah
3. 810 views
0.1 mol of HCl is added to 1 L of water.What is [H+] and [OH-]?
1. 1 answer
2. asked by Sarah
3. 576 views
Initially, we place 2 mol of A and 4 mol of B in a 0.5 L flask. At equilibrium, the flask contains 0.3 mol of C. Determine the
1. 2 answers
2. asked by Sarah
3. 1,638 views
What are the similarities and differences between scroll paintings in China and Japan?
1. 0 answers
2. asked by Bella
3. 443 views
Who is the president of your club?1. It's Yun Seho. 2. He is Yun Seho. 3. Yun seho. (Are the answers all cocrrect? Which one is
1. 1 answer
2. asked by rfvv
3. 364 views
WFE questionin 9th chap agust say that women be problem, telling "it must be full moon" it actually be women or august that be
1. 3 answers
2. asked by Mohammad
3. 342 views
Describe features found in the early buildings of the International Style of architecture. Who was responsible for its start and
1. 0 answers
2. asked by Bella
3. 370 views
1. What is the name for the hat which a coook wears when he cooks?2. He is wearing swimming goggles. 2-2. He is wearing swimming
1. 1 answer
2. asked by rfvv
3. 409 views
WFE questionthe guy who owned rosie be4 call her dumb as bag oof hammer. he be right? give example i not think he be right
1. 3 answers
2. asked by Mohammad
3. 411 views
WFE questionin chap 11 y do walter change his opinion of jacb? y this be important? because he feel bad for him?
1. 2 answers
2. asked by Mohammad
3. 338 views
Calculate the solubility of CaCrO4 if its Ksp is 1.6 x 10-9 at 25°C, in mg/L.Ksp = 1.6 x 10-9
1. 2 answers
2. asked by Sarah
3. 1,227 views
7.8 g of calcium fluoride is dissolved in 100 L of water at 25°C. Will a precipitate be formed?
1. 1 answer
2. asked by Sarah
3. 867 views
Who main character Jacob referring himself to when he say I m their shephard, their protectr what do he mean by this?
1. 6 answers
2. asked by Mohammad
3. 373 views
Aluminum metal is used in many familiar objects, from frying pans to screen doorframes and jet aircraft. However, the bottle of
1. 1 answer
2. asked by David E.
3. 591 views
Aluminum metal is used in many familiar objects, from frying pans to screen doorframes and jet aircraft. However, the bottle of
1. 0 answers
2. asked by David E.
3. 405 views
WFE questionin chap 11 y do walter change his opinion of jacb? y this be important? because he feel bad for him?
1. 1 answer
2. asked by Mohammad
3. 331 views
Imagine that you have been hired as an IT consultant and have been asked to write a recommendation for an OS. This start-up
1. 2 answers
2. asked by Samantha
3. 557 views
How would you prove this identity?(sin^3(x)+cos^3(x))÷(1-2cos^2(x)) = (sec(x)-sin(x))÷(tan(x)-1)
1. 1 answer
2. asked by Anna
3. 443 views
A regular hexagon has an area of 96sqrt3. What is the length of each side of the hexagon?
1. 1 answer
2. asked by Piggy
3. 1,115 views
You work with the following system:2X(g) <--> Y(g) At, equilibrium, [Y]=3[X]. If K=10, calculate the [Y] at equilibrium.
1. 1 answer
2. asked by Katie
3. 617 views
An object is launched directly upward at an initial speed of 42.3 m/s. Assuming there is no air-resistance acting on the object,
1. 1 answer
2. asked by Anonymous
3. 545 views
A 3.60 kg book is initially on a shelf located 1.80 m above the floor. The book is moved from the shelf to a coffee table that
1. 1 answer
2. asked by Anonymous
3. 522 views
A 3.66 kg block is placed on an inclined surface that makes an angle of 18.5° relative to horizontal. The coefficients of
1. 1 answer
2. asked by Anonymous
3. 1,029 views
Verify this identity. How would you prove it(sin^3(x)+cos^3(x))÷(1-2cos^2(x)) = (sec(x)-sin(x))÷(tan(x)-1)
1. 1 answer
2. asked by Beatrice
3. 528 views
An object is situated so that its center of mass is located at the origin.Three forces X,Y, and Z act on the object at the same
1. 2 answers
2. asked by R
3. 725 views
the president has the power to appoint which of the following positions?a) members of the House of Representatives who resign
1. 3 answers
2. asked by tina
3. 1,389 views
How would you prove/Verify this Identity.x=theta (cosx+sinx-sin^3x)/(sinx)=cotx+cos^2x
1. 1 answer
2. asked by Beatrice
3. 550 views
A mixture of lead, magnesium, nitrate and chromate ions are present in a solution. What will the precipitate be?Question 2
1. 1 answer
2. asked by Katie
3. 1,329 views
What is the maximum concentration of Ca2+ ions in a solution containing 0.010 M of F- ions?
1. 2 answers
2. asked by Katie
3. 2,588 views
A solution contains I-, Br- and OH- ions. If Ag+ is added, what will the precipitate(s) be?
1. 1 answer
2. asked by Katie
3. 585 views
Which of the following pairs of compounds will give a precipitate in a diluted solution?Question 4 options: A) Cu(NO3)2 and
1. 1 answer
2. asked by Katie
3. 952 views
The Kc for the following reaction at 940oC is 1.38.Given the concentrations [CO2] = 0.500 M, [H2] = 0.425 M, [CO] = 0.610 M and
1. 2 answers
2. asked by Katie
3. 1,822 views
What mass of NaOH(s) must be added to 300 mL of HCl 0.25 M in order to completely neutralize this acid?
1. 1 answer
2. asked by Katie
3. 469 views
If the major axis is vertical and has a length of 10 units,the minor axis has a length of 8 units,and the center C=(4,-2).Fill
1. 1 answer
2. asked by Daniel
3. 945 views
Calculate the [H+] of a solution obtained by mixing 1 L of hydrochloric acid 1.0 M with 1 litre of sodium hydroxide 0.990 M.
1. 1 answer
2. asked by Katie
3. 817 views
How many grams of NaOH must be dissolved in water to make 750ml of 1.7 M solution? (molecular weight of NaOH = 4Og/mol)
1. 1 answer
2. asked by nero
3. 612 views
1. We sing beautiful songs together.2. We learn classical songs and present at the school festival. 3. We sing pop songs and
1. 1 answer
2. asked by rfvv
3. 540 views
1. At the singing club, we meet at 9 every Saturday and sing classical songs together. We have to present somee songs before
1. 1 answer
2. asked by rfvv
3. 487 views
"¿Conoces a mi amigo Alfredo?" "Sí, pero no ___ muy bien."a. lo conoces b. la conozco c. lo conozco d. la conoce C? "¿Se
1. 1 answer
2. asked by mysterychicken
3. 1,183 views
The owner-manager of Good Guys Enterprises obtains utility from income (profit) and from having the firms behave in a socially
1. 0 answers
2. asked by Ashaki
3. 958 views
Give the numbers of elements in the regions marked I, II, III, IV, V, VI, VII, VIII in the figure.|U| = 220, |A| = 20, |B| = 14,
1. 1 answer
2. asked by Monic
3. 879 views
1. What is the name for the hat which a coook wears when he cooks?2. He is wearing swimming goggles. 2-2. He is wearing swimming
1. 1 answer
2. asked by rfvv
3. 550 views
Calculate the volume of NaOH 0.5 mol/L necessary to neutralize 300 mL of HCl 0.2 M.
1. 1 answer
2. asked by Katie
3. 579 views
25 mL of NaOH 0.16 M is added to 50 mL of 0.1 M HCl.What is the concentration of hydroxide ions in the solution?
1. 1 answer
2. asked by Katie
3. 603 views
A fair die is tossed and the number facing up is noted. If the probability of getting at least one ‘six’ is to exceed 0.9,
1. 1 answer
2. asked by Nesa
3. 669 views
A construction zone on Kings Road has a posted speed of 45 kilometers per hour. The speeds of vehicle passing through this
1. 2 answers
2. asked by Nesa
3. 1,070 views
In 2002, the average price of new homes in a certain suburb was $145,000. Assume that this mean is based on a random sample of
1. 1 answer
2. asked by Nesa
3. 610 views
A random sample of 16 mid-sized cars tested for fuel consumption gave a mean of 26.4 kilometers per liter with a standard
1. 1 answer
2. asked by Nesa
3. 1,214 views
1. Write "Do not come in" on the star on the paper.2. Write "Do not come in." on the star on the paper. (Do we have to add 'a
1. 1 answer
2. asked by rfvv
3. 740 views
In a computer monitor, an electron beam with a current of 4x10^-6 A is directed at the screen. How many electrons are
1. 1 answer
2. asked by Yvonne
3. 457 views
What are your future academic and career aspirations?what does this mean?
1. 1 answer
2. asked by bkue
3. 438 views
5.6 x 10-6 mol of A and 5 x 10-5 mol of B are mixed in a 200 mL flask. The system is represented by the equation:2A(g) + B(g)
1. 1 answer
2. asked by Sandra
3. 572 views
A 100 mL container is filled with 0.01 mol of A2B3. At equilibrium, it also contains 0.006 mol of B. Find the value of K.A2B3(g)
1. 1 answer
2. asked by Sandra
3. 958 views
A system is represented by the following equation:2A(aq) + B(aq) --> 3C(aq) At equilibrium, [C]=0.6 M. Calculate the value of K
1. 2 answers
2. asked by Sandra
3. 518 views
what is the net electrostatic force on the charge q3 -48ìc due to charges q1 (+78µC) and q2 (+50µC)
1. 1 answer
2. asked by Rodney
3. 514 views
Given the consentration of either hrgrogen ion or hydroxide ion, use the product constant of water to calculate the
1. 1 answer
2. asked by Liz
3. 621 views
I have to put characters into groups and explain why ?
1. 1 answer
2. asked by mich
3. 471 views
Now calculate Kb the base dissociation constant for [C2H3O2-], acetate anion, for each of your trials from the concentrations of
1. 1 answer
2. asked by Tim
3. 5,916 views
How many moles of oxygen in a litre of air which has 21% oxygen by volume?
1. 0 answers
2. asked by Kanika
3. 360 views
A sequence is called an arithmetic progression of the rst order if thedi erences of the successive terms are constant. It is
1. 1 answer
2. asked by Bhupendra
3. 677 views
Two persons A and B are walking with a speed of 4 km/h and 5 km/h respectively in the same direction. Find how far will B be
1. 1 answer
2. asked by Catherine
3. 377 views
As a technician in a large pharmaceutical research firm, you need to produce 200 mL of 1.00 M a phosphate buffer solution of pH
1. 1 answer
2. asked by teja
3. 738 views
what happened if I add ch3cooh to hypochlorite?
1. 0 answers
2. asked by hoor
3. 351 views
One molecule of water (H2O) contains two atoms of hydrogenand one atom of oxygen.A hydrogen atom has a mass of 1.0 u and an atom
1. 0 answers
2. asked by teja
3. 895 views
ice forms on a refrigerator ice box at the rate of (4-06t)g per minute after t minutes. if initially there were2g of ice, find
1. 1 answer
2. asked by chima
3. 471 views
two objects of masses m1 and m2 fall freely from height h1 and h2 in a vertical plane respectively.The ratio of time taken by
1. 2 answers
2. asked by snigdha
3. 566 views
how-do-i-make-hydrochloric-acid-more-concentrated
1. 1 answer
2. asked by joy
3. 333 views
What are the similarities and differences between scroll paintings in China and Japan?
1. 0 answers
2. asked by Bella
3. 527 views
Describe features found in the early buildings of the International Style of architecture. Who was responsible for its start and
1. 1 answer
2. asked by Bella
3. 428 views
A satellite, B, is 17,000 miles from the horizon of Earth. Earth’s radius is about 4,000 miles. Find the approximate distance
1. 26 answers
2. asked by aYaMe ;)
3. 11,493 views
A skydiver jumps out of a hovering helicopter, so there is no forward velocity. Use this information to answer questions 1 to 9.
1. 1 answer
2. asked by kelly
3. 1,112 views
What are the factors contributing to lack of physical fitness and proper nutrition in the adolescent
1. 2 answers
2. asked by Faith
3. 508 views
A drag-racing car accelerates forward because of the force exerted on it by the road. Why, then, does it need an engine?
1. 1 answer
2. asked by MHD
3. 1,683 views
the area of a parallelogram is 36 in squared and its height is 3 in . How long is the corresponding base?
1. 1 answer
2. asked by Hdjdhdhdhs
3. 633 views
In the experiment of electroplating of copper, how could I remove the copper plate from my key a) Electrically? b) Chemically
1. 1 answer
2. asked by Chamy
3. 365 views
Find the volume of the given prism 17m 2m 1m
1. 1 answer
2. asked by Eduardo
3. 1,195 views
A square piece of foil with area A = 5.0 × 10^-4 m^2 and mass m = 5.0 × 10^-5 kg is suspended along one edge and hangs under
1. 0 answers
2. asked by Rams
3. 670 views

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