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2014
February

Questions Asked on February 24, 2014

1. Ken bought a car last year to drive back and forth to work. Last year he spent $1,098 on gas. This year, it was $1,562. What
1. 3 answers
2. asked by Cheryl
3. 6,510 views
A football is thrown from the edge of a cliff from a height of 22 m at a velocity of 18 m/s [39degrees above the horizontal]. A
1. 2 answers
2. asked by Louis
3. 4,129 views
Copper(II) chloride and lead(II) nitrate react in aqueous solutions by double replacement. Write the balanced chemical equation,
1. 3 answers
2. asked by jan
3. 3,921 views
1. A 2.5 kg mass at rest on a horizontal surface is acted upon by an applied horizontal force of 150 N. A frictional force of
1. 23 answers
2. asked by Lisa
3. 3,714 views
which of the following illustrates conduction as a mode of heat transfer 1 pointa microwave oven produces electromagnetic waves
1. 15 answers
2. asked by Denna
3. 3,452 views
In a study, nine tires of a particular brand were driven on a track under identical conditions. Each tire was driven a
1. 2 answers
2. asked by Tracy
3. 3,340 views
The cell diagram for the lead-acid cell that is used in automobile and truck batteries isPb(s) l PbSO4 (s) l H2SO4 (aq) l
1. 3 answers
2. asked by Bridget
3. 3,293 views
The passenger section of a train has width 2x-7, length 2x+3 and height x-2 with all dimensions in metres. Solve a polynomial
1. 1 answer
2. asked by Kizzy
3. 3,227 views
Solve the inequality graph the solution set 26+6b>2(3b+4) answers are. All real numbers, b<11/2, b>11/2, no solution thanks
1. 1 answer
2. asked by Lucky
3. 3,143 views
In most geometry courses, we learn that there's no such thing as "SSA Congruence". That is, if we have triangles ABC and DEF
1. 1 answer
2. asked by John
3. 3,079 views
the line passes through the points s(6,6) and T(0,-2) determine the gradient of the linethe equation of the line the midpoint of
1. 3 answers
2. asked by shanise
3. 2,970 views
the African plate is moving toward the Eurasian plate at a rate few centimeters per year. how will this are change in 100
1. 17 answers
2. asked by Denna
3. 2,816 views
Find the original price of a pair of shoes if the sale price is $56 after a 20% discount
1. 3 answers
2. asked by Brittany
3. 2,698 views
In 1901, Thomas Edison invented the nickel-iron battery. The follwing reaction takes place in the battery.Fe(s) + 2 NiO(OH)(s) +
1. 1 answer
2. asked by Grace
3. 2,697 views
Discuss your opinion of the consequences of artificial selection and the advantages and disadvantages of using genetic
1. 32 answers
2. asked by Do_It_For_The_Vine
3. 2,668 views
A gaseous hydrogen and carbon containing compound is decomposed and found to contain 85.63% C and 14.37% H by mass. The mass of
1. 1 answer
2. asked by Simone
3. 2,653 views
If a 0.192 g sample of copper metal reacts with elemental sulfur to form 0.240 g of the sulfide product, (a) find the percent by
1. 1 answer
2. asked by danielle
3. 2,652 views
If I want to prepare 5.0 liters of a 0.25 M solution of NH4Cl, how many grams of the salt should I weight out?
1. 2 answers
2. asked by Krew
3. 2,374 views
A store sells used DVDs for $8 each and used videotapes for $6 each. Write a function rule to represent total selling price of
1. 6 answers
2. asked by Ty
3. 2,359 views
A small block has a horizontal velocity of 4.00 m/s as it slides off the edge of a table. The table is a vertical distance of
1. 1 answer
2. asked by sunny
3. 2,271 views
When copper(II) oxide is heated in the presence of hydrogen gas, elemental copper and water are produced. What mass of copper
1. 2 answers
2. asked by Grace
3. 2,185 views
Which of these statements about saltwater is correct?a. Saltwater freezes at a lowers temperature? b. Saltwater freezes at a
1. 10 answers
2. asked by Hannah
3. 2,175 views
The experiment done in lab is repeated, using a ball that has unknown mass m. You plot your data in the form of f 2 versus M/L,
1. 1 answer
2. asked by sunny
3. 2,132 views
Each user has a password 6 characters long where each character is an uppercase letter, a lowercase letter, or a digit. Each
1. 2 answers
2. asked by lisa
3. 2,013 views
A heat engine receives 7.0 x 10^3 J of heat and loses 3.0 x 10^3 J in each cycle. What is the efficiency?1-30% 2-43% 3-57% 4-70%
1. 1 answer
2. asked by shirly
3. 1,970 views
Which of the following substances can act as a Bronsted base in aqueous solution? (Select all that apply.)H2O NH3 H2 CH3NH2 O2
1. 1 answer
2. asked by Elizabeth
3. 1,858 views
The half-life for the first-order conversion of A to B is 56.5 hours. How long does it take for the concentration of A to
1. 1 answer
2. asked by Kristen
3. 1,837 views
If your heating generates soot on the bottom of the crucible, what is the origin of the soot? How will this soot collection
1. 1 answer
2. asked by Maggie
3. 1,816 views
the ratio of the height to the width of a packaging label is 5 to 19. if the height of the label is 1.5 inches, what is its
1. 4 answers
2. asked by magen
3. 1,771 views
An SRS of 40 San Diego County Schools graduates showed that 26 of the 40 enrolled in a college or university right out of high
1. 1 answer
2. asked by Anonymous
3. 1,701 views
A volume of 80.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What
1. 1 answer
2. asked by carley
3. 1,567 views
20.00 cm of space is available. How long a piece of brass at 20°C can be put there and still fit at 200°C? Brass has a linear
1. 1 answer
2. asked by shirly
3. 1,565 views
3. Yellow light travels through a glass block at a speed of 1.97x108 m/s. The wavelength of the light in this type of glass is
1. 1 answer
2. asked by Tara
3. 1,554 views
Which of the following substances would be expected to be the strongest electrolyte (best conductor of electricity) in solution
1. 1 answer
2. asked by sara
3. 1,501 views
Given these standard reduction potentials at 25 C1. Cr3+ + e- ===> Cr2+ E1=-0.407 V 2. Cr2+ + 2e- ===> Cr(s) E2=-0.913 V
1. 3 answers
2. asked by Bridget
3. 1,500 views
when y varies directly at the square of X, the variation equation is written y= kx square, where K is constitution(a) given that
1. 1 answer
2. asked by shanise
3. 1,449 views
Choose the best answer.1.) We like to eat. A.) Wir essen lieber. B.) Wir essen gern.******** C.) Wir essen am liebsten. D.) Wir
1. 10 answers
2. asked by Cassie
3. 1,412 views
4. A force of 48 N is required to start a 7.8 kg box moving across a horizontal concrete floor.(a) What is the coefficient of
1. 1 answer
2. asked by Rian
3. 1,403 views
An old battery with an emf of 9.0 V has a terminal voltage of 7.8 V when it is supplying a current of 1.5 mA. What is the
1. 1 answer
2. asked by mercedes
3. 1,395 views
• 1. Draw a segment and create a perpendicular bisector using the geometric construction techniques.• 2. Draw an angle and
1. 5 answers
2. asked by Abby
3. 1,381 views
1. Direct misconduct by a police officer, such as extorting money from drug dealers, would be an example of which of the
1. 6 answers
2. asked by Any
3. 1,350 views
what mass(g) of NH3 must be dissolved in 475g of methanol to make a 0.25m solution
1. 2 answers
2. asked by Anonymous
3. 1,328 views
6. Drag-race tires in contact with an asphalt surface have a very high coefficient of static friction. Assuming a constant
1. 1 answer
2. asked by SHAWN
3. 1,272 views
A ladder 25 feet long that was leaning against a vertical wall begins to slip. Its top slides down the wall while its bottom
1. 1 answer
2. asked by Bobby
3. 1,176 views
If your heating generates soot on the bottom of the crucible, what is the origin of the soot? How will this soot collection
1. 2 answers
2. asked by Kelsey
3. 1,156 views
1. What was described as the ' hardest work " slaves did ? ( 1point )A. work in the rice fields B . Work in the tobacco fields
1. 2 answers
2. asked by lovey
3. 1,141 views
1. Which of the following positions holds that moral beliefs vary from person to person, and that one person's beliefs and
1. 3 answers
2. asked by Any
3. 1,139 views
Can someone please explain how to do this problem?A regional soccer tournament has 64 participating teams. In the first round,
1. 1 answer
2. asked by Jane
3. 1,131 views
A 72- kg ice hockey player standing on a frictionless sheet of ice throws a 5.6- kg bowling ball horizontally with a speed of
1. 1 answer
2. asked by Anonymous
3. 1,114 views
Is the inequality sometimes,always,never,true -2(2x+9)>-4 x+9
1. 2 answers
2. asked by tina
3. 1,086 views
1. With respect to religion and morality, the problem of common ground refers to the fact that religious commands and
1. 1 answer
2. asked by Any
3. 1,058 views
Show all steps evaluate the expression for the given value of the variable 5a+5b,a=-6,b=-5thanks
1. 2 answers
2. asked by Lucky
3. 1,054 views
Please Help!!,The dimensions of a photo of a mountain bike are 15cm by 12cm. An enlargement is to be made for a poster with
1. 1 answer
2. asked by Cherie
3. 1,021 views
A particle is moving along the curve y = 4x^2 + 1 in such a way that the y coordinate is increasing at a rate of ½ units per
1. 1 answer
2. asked by Carlos
3. 1,009 views
several friends each had 2/3 of a bag of peanuts left over from the basketball game. they realized that they could have bought 2
1. 2 answers
2. asked by Izzy
3. 964 views
An investor must invest a total of $15,000 in two accounts, one paying 4% annual interest, and the other 3%. If he wants to earn
1. 1 answer
2. asked by Mila
3. 960 views
hi, can somebody pls check my work asap!??1. Who was the African American who called the war with Mexico "disgraceful" and
1. 15 answers
2. asked by TTR+S<3
3. 947 views
If 1.87 g of acetic acid(CH3CO2H) reacts with 2.31 g of isopentyl alcohol(C5H12O) to give 2.96 g of isopentyl acetate(C7H14O2),
1. 0 answers
2. asked by robert
3. 937 views
An architect has allocated a rectangular space of 589ft^2 for a square dining room and a 12ft wide kitchen. Find both the width
1. 1 answer
2. asked by Pam
3. 933 views
Linda jogs every 3rd day and swims every 4th day. If she is jogging on Monday, what day of the week will she end up jogging and
1. 4 answers
2. asked by Mike
3. 917 views
Determine [Zn2 ], [CN–], and [HCN] in a saturated solution of Zn(CN)2 with a fixed pH of 2.640. The Ksp for Zn(CN)2 is 3.0 ×
1. 1 answer
2. asked by Sonya
3. 914 views
A -kg block is initially at rest on a frictionless horizontal surface. It is pulled with a constant horizontal force N. How long
1. 0 answers
2. asked by cristy
3. 899 views
4. which reference can help you find synonyms and antonyms for words ? ( 1point )A. dictionary B . encyclopedia c. glossary d.
1. 3 answers
2. asked by ::)))sfjslf
3. 896 views
My teacher went over it really fast and now I'm just really confused about how to do my homework =(Calculate the cell potential
1. 1 answer
2. asked by Bridget
3. 883 views
CaO has a face-centered cubic unit cell in which the O2- anions occupy corners and face centers, while the cations fit into the
1. 0 answers
2. asked by hershi
3. 876 views
Two poles are 20 feet tall and 30 feet tall, respectively. If they are 30 feet apart, how far is itfrom the top of one pole to
1. 4 answers
2. asked by Amanda
3. 845 views
Does anyone know if north central is hyphenated AP style? my book doesn't really specify.
1. 1 answer
2. asked by blaze
3. 807 views
A 500. mL sample of hydrogen gas is collected over water at 27 °C. The pressure of the hydrogen and water vapor mixture is 78.5
1. 2 answers
2. asked by Gabby
3. 806 views
An aqueous solution is analyzed and found to contain potassium ions and sulﬁte ions. Write the equation for the dissolution of
1. 1 answer
2. asked by lebanon
3. 796 views
The activation energy of a certain reaction is 34.9kJ/mol . At 23 ∘C , the rate constant is 0.0190s−1. At what temperature
1. 3 answers
2. asked by Kat
3. 789 views
Can someone explain to me the difference between angry about and angry for (when a verb follows)?I think "about" is used in
1. 0 answers
2. asked by Frank
3. 773 views
could anyone help me answer this question , plz , thank youThe following question is about the poem " We are cool " 3.
1. 0 answers
2. asked by lovey
3. 773 views
A penny is placed at the outer edge of a disk (radius = 0.119 m) that rotates about an axis perpendicular to the plane of the
1. 0 answers
2. asked by Anonymous
3. 771 views
A 7 kg purse is dropped from the top of the Leaning Tower of Pisa and falls 53 m before reaching the ground with a speed of 17
1. 0 answers
2. asked by shanna
3. 767 views
Sighting the top of a building, a surveyor measured the angle of elevation to be 60°. The measurement is taken 200 feet from
1. 1 answer
2. asked by sean
3. 767 views
A planet has a mass of 5.71 × 1023 kg and a radius of 3.93 × 106 m. (a) What is the acceleration due to gravity on this
1. 0 answers
2. asked by lawrenvceshrenk
3. 762 views
The entire region of Northern Africa and Southwest Asia is dominated byA. climates in which the evaporation exceeds
1. 1 answer
2. asked by mariy
3. 760 views
Underline the direct objects in the sentences, or extracts from sentences.1. The next day I visited a good friend of mine.
1. 5 answers
2. asked by Anonymous
3. 760 views
Find the APR, or stated rate, in each of the following casesEAR: 12.4 semianually 13.3 monthly 11.0 weekly 14.7 infintely
1. 1 answer
2. asked by Jade
3. 759 views
If 3.943 g of anhydrous salt remains after heating 5.00 g of CuCℓ2·xH2O, determine the number of molecules of water of
1. 1 answer
2. asked by Roxanne
3. 753 views
A partly-full paint can has 0.40 gallons of paint left in it. (a) What is the volume of the paint, in cubic meters? (b) If all
1. 0 answers
2. asked by sana
3. 741 views
Brad is paid time-and-a-half if he works over 40 hours in a week. one week he worked 55 hours and earned $697.50.Write and solve
1. 2 answers
2. asked by Hanna Hyung
3. 735 views
1500 cm^3 of ideal gas at STP is cooled to -20°C and put into a 1000 cm^3 container. What is the final gauge pressure?1-11 kPa
1. 1 answer
2. asked by shirly
3. 729 views
An old battery with an emf of 9.0 V has a terminal voltage of 7.8 V when it is supplying a current of 1.5 mA. What is the
1. 2 answers
2. asked by mercedes
3. 728 views
wt can i study with maths and physical sciences and life sciences besides engeenering thngs ?please help
1. 5 answers
2. asked by masaka cindy
3. 725 views
A large stone block has been loaded in the bed of a dump truck. The bed is slowly raised until it makes an angle of 30 degrees
1. 2 answers
2. asked by chris
3. 720 views
You have saved $15,000 for down payment on a car costing $55,000, and plan to finance the rest with a 5-year loan. The dealer is
1. 3 answers
2. asked by sakiss
3. 720 views
My motorcycle has a capacity of 4.5 gal of gasoline. If I combust all of the octane to power my motorcycle, what is the volume
1. 6 answers
2. asked by tricia
3. 712 views
I need help, i'm not sure if i have the correct answers and i'm scared to submit them.A man carries a 10 kg sack of groceries in
1. 1 answer
2. asked by Me
3. 709 views
2. What was Mustafa Ataturk's contribution to modern Turkey?A.He began the process of turning Turkey into a modernized, secular
1. 3 answers
2. asked by mariy
3. 705 views
1. Based on what you have read so far, what is the one thing that always changes when a scene changes in The Diary of Anne
1. 3 answers
2. asked by #1Student
3. 705 views
A 0.670 g sample of impure Al2(SO4)3 reacts with excess BaCl2. If the sample produces 0.760 g of BaSO4, what is the mass percent
1. 1 answer
2. asked by Tevin
3. 703 views
Consider the function f(x)=x^n for positive integer values of n.(a) For what values of n does the function have a relative
1. 1 answer
2. asked by helga
3. 701 views
Where does LeVar Buton currently live?
1. 2 answers
2. asked by Anonymous
3. 700 views
A block with a mass of 126 kg is pulled with a horizontal force of F applied across a rough floor. The coefficent of friction
1. 1 answer
2. asked by cris
3. 694 views
Fill in the blanks with the appropriate raw score, z score, t scores . Mean =50, sd = 5. Raw 35
1. 1 answer
2. asked by Saf
3. 691 views
Which of the following substances can act as a Bronsted acid in aqueous solution? (Select all that apply.)NH41+ H2 O2 C4H10
1. 1 answer
2. asked by Julie
3. 690 views
1. A buffer was prepared by dissolving 11.7 g of KH2PO4 in 400 mL of water, and with the addition of concentrated solution of
1. 3 answers
2. asked by James
3. 689 views
A very long wire carries an I1 = 7.80 A current along the x axis and another long wire carries an I2 = 5.13 A current along the
1. 1 answer
2. asked by Amanda
3. 686 views
A woman is riding a Jet Ski at a speed of 20 m/s and notices a seawall straight ahead. The farthest she can lean the craft in
1. 0 answers
2. asked by Anonymous
3. 680 views

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