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2012
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Questions Asked on May 11, 2012

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. 11,537 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. 7,068 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. 5,943 views
For the oxidation-reduction reaction equation given here,2Rb+Br2 --> 2RbBr Indicate how many electrons are transferred in the
1. 1 answer
2. asked by Jematormal91
3. 3,827 views
A hair dryer draws a current of 9.7 A.(a) How much charge passes through the hair dryer in 3.5 min? 1 C (b) How many electrons
1. 4 answers
2. asked by Alice
3. 3,496 views
For the following battery:Cd(s) | CdCl2(aq) || Cl–(aq) | Cl2(l) | C(s) Write the reduction half reaction for the C(s)
1. 1 answer
2. asked by Jematormal91
3. 2,951 views
A 17-kg rock is on the edge of a 103-m cliff.(a) What potential energy does the rock possess relative to the base of the cliff?
1. 5 answers
2. asked by Brianna
3. 2,705 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. 2,601 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. 1,843 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. 1,746 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. 1,697 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. 1,697 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. 1,647 views
Four resistors are connected to a battery with a terminal voltage of 12.0 V, (R1 = 40.0 , R2 = 80.0 , R3 = 140.0 and R4 = 15.0 )
1. 1 answer
2. asked by Amelia
3. 1,550 views
a mean score on a standardized test is 50 with a standard deviation of 10. What are the following:1. what scores fall between -1
1. 1 answer
2. asked by erica
3. 1,473 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. 1,400 views
volcanic activity that formed much of the Malay Archipelago also created what?typhoons, tropical rainforests, fertile soil, all
1. 3 answers
2. asked by poisoned thorn
3. 1,388 views
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a
1. 2 answers
2. asked by chelsea
3. 1,380 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. 1,342 views
A hard rubber ball is dropped from a moving van with a height of 5 metres. The ball rises to 80% of the previous height after
1. 1 answer
2. asked by Steven
3. 1,284 views
a final exam in statistics has a mean of 73 with a standard deviation of 7.73. Assume that a random sample of 24 students is
1. 2 answers
2. asked by erica
3. 1,282 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. 1,239 views
Table salt has a solubility of 36 g of salt in 100 g of water at 40°C. If 15 g of the salt are added to 50 g of water at the
1. 2 answers
2. asked by Andrew
3. 1,233 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. 1,231 views
Find the volume of the given prism 17m 2m 1m
1. 1 answer
2. asked by Eduardo
3. 1,206 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. 1,202 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. 1,193 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. 1,129 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. 1,128 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. 1,088 views
a balloon is filled to a volume of 7.00 x 10 to the second mL at a temperature of 20.0 degrees celcius. the balloon is then
1. 1 answer
2. asked by karen
3. 1,079 views
A research center claims that 50% of people believe that drivers should be allowed to use cellular phones with hands free
1. 1 answer
2. asked by Amber
3. 1,078 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. 1,042 views
Calculate the cost of operating a 65 W light bulb continuously for a 30-day month when electrical energy costs $0.23/kW·h.$ 1
1. 1 answer
2. asked by Alice
3. 1,027 views
You are interested in buying a new car and Bob let's you borrow one of the new cars on his lot for a week to test drive. You
1. 1 answer
2. asked by Anonymous
3. 1,025 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. 1,016 views
A ball is kicked from ground level into the air. Its height y, in feet, after x seconds can be represented by the equation y =
1. 1 answer
2. asked by Jane
3. 1,015 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. 979 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. 974 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. 966 views
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. 964 views
Explain the concepts of phyletic gradualism and punctuated equilibrium.What predictions about the fossil record does punctuated
1. 2 answers
2. asked by kamelia
3. 963 views
You are walking down the street and in looking around, you can’t help but notice that half or more of the people you see are
1. 3 answers
2. asked by sarah
3. 963 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. 954 views
Solve the following polynomial inequalities.4x - 5 ≤ 2(x - 7)
1. 2 answers
2. asked by rick
3. 949 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. 921 views
5 ways in which human problem impacts on community.and the relavent sources to support claims.
1. 1 answer
2. asked by Nelly
3. 919 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. 915 views
how do You suppose to start an email using a word pad i m not sure how to start it off
1. 1 answer
2. asked by hazel
3. 910 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. 898 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. 892 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. 874 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. 868 views
Each fence section has a post at each end. How many posts are needed to build a fence with 10 sections?Is it 8, 11, 10 or 9
1. 3 answers
2. asked by Mack
3. 862 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. 825 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. 822 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. 812 views
A bag of hard candy contains 8 cherry candies, 6 grape candies, 7 pineapple candies, and 4 lime candies. Juan takes one candy
1. 2 answers
2. asked by Christ B
3. 800 views
Can you proofread my writing?Wrong Place, Wrong Time On February 26, a 17-year-old boy named Trayvon Martin was murdered. Why?
1. 4 answers
2. asked by Stonie
3. 771 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. 767 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. 752 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. 748 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. 741 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. 733 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. 719 views
in triangle abc ad is bisector of angle a and angle b is twice of angle c prove that angle bac is equal to 72
1. 1 answer
2. asked by priyanka
3. 714 views
A bowl contains 3 apples, 4 pears, 2 bananas, and 1 peach. Hal chooses a piece of fruit without looking. What is the probability
1. 1 answer
2. asked by cindy
3. 714 views
A steam iron draws 6.5 A when connected to a potential difference of 120 V.(a) What is the power rating of this iron? 1 W (b)
1. 1 answer
2. asked by Amelia
3. 713 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. 697 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. 686 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. 684 views
The base of a 6-inch long ice cream cone with a diameter of 2 inches, is cut 0.25 inches from the base. The left over shape
1. 1 answer
2. asked by kelle
3. 670 views
A net charge of 47 mC passes through the cross-sectional area of a wire in 19.0 s.(a) What is the current in the wire? 1 A (b)
1. 1 answer
2. asked by Alice
3. 664 views
You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies,
1. 0 answers
2. asked by Jane
3. 662 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. 655 views
A 330- piano slides 3.8 down a 23 incline and is kept from accelerating by a man who is pushing back on it parallel to the
1. 1 answer
2. asked by Daisy
3. 645 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. 644 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. 639 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. 634 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. 634 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. 0 answers
2. asked by Brianna
3. 628 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. 627 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. 625 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. 622 views
What is the probability that 3 will be spun on the spinner below?The sections in the circle are 8 sections with numbers,
1. 1 answer
2. asked by Missy
3. 604 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. 601 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. 594 views
Hi, I have a outline homework to do. The problem is I don't know a thing about this topic. The topic is about "Financial Crisis
1. 3 answers
2. asked by Willy
3. 591 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. 588 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. 585 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. 585 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. 576 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. 575 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. 572 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. 571 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. 1 answer
2. asked by Brianna
3. 569 views
What is Art therapy?What do you do as a art therapist? Do you get paid a lot? (curious) How does it change people lives?
1. 1 answer
2. asked by Laruen
3. 566 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. 565 views
How much charge passes through a cross-sectional area of a copper wire in 0.8 s if I = 3.5 A?1 C -Work equation?
1. 1 answer
2. asked by Alice
3. 563 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. 558 views

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