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February
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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
3 answers
asked by
Cheryl
6,530 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
2 answers
asked by
Louis
4,149 views
Copper(II) chloride and lead(II) nitrate react in aqueous solutions by double replacement. Write the balanced chemical equation,
3 answers
asked by
jan
3,944 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
23 answers
asked by
Lisa
3,730 views
which of the following illustrates conduction as a mode of heat transfer 1 point
a microwave oven produces electromagnetic waves
15 answers
asked by
Denna
3,481 views
In a study, nine tires of a particular brand were driven on a track under identical conditions. Each tire was driven a
2 answers
asked by
Tracy
3,357 views
The cell diagram for the lead-acid cell that is used in automobile and truck batteries is
Pb(s) l PbSO4 (s) l H2SO4 (aq) l
3 answers
asked by
Bridget
3,313 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 answer
asked by
Kizzy
3,241 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 answer
asked by
Lucky
3,157 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 answer
asked by
John
3,096 views
the line passes through the points s(6,6) and T(0,-2) determine the gradient of the line
the equation of the line the midpoint of
3 answers
asked by
shanise
2,989 views
the African plate is moving toward the Eurasian plate at a rate few centimeters per year. how will this are change in 100
17 answers
asked by
Denna
2,848 views
Find the original price of a pair of shoes if the sale price is $56 after a 20% discount
3 answers
asked by
Brittany
2,720 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 answer
asked by
Grace
2,711 views
Discuss your opinion of the consequences of artificial selection and the advantages and disadvantages of using genetic
32 answers
asked by
Do_It_For_The_Vine
2,699 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 answer
asked by
Simone
2,671 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 answer
asked by
danielle
2,671 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?
2 answers
asked by
Krew
2,385 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
6 answers
asked by
Ty
2,383 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 answer
asked by
sunny
2,289 views
When copper(II) oxide is heated in the presence of hydrogen gas, elemental copper and water are produced. What mass of copper
2 answers
asked by
Grace
2,209 views
Which of these statements about saltwater is correct?
a. Saltwater freezes at a lowers temperature? b. Saltwater freezes at a
10 answers
asked by
Hannah
2,198 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 answer
asked by
sunny
2,142 views
Each user has a password 6 characters long where each character is an uppercase letter, a lowercase letter, or a digit. Each
2 answers
asked by
lisa
2,027 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 answer
asked by
shirly
1,980 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 answer
asked by
Elizabeth
1,873 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 answer
asked by
Kristen
1,852 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 answer
asked by
Maggie
1,830 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
4 answers
asked by
magen
1,780 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 answer
asked by
Anonymous
1,716 views
A volume of 80.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What
1 answer
asked by
carley
1,586 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 answer
asked by
shirly
1,584 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 answer
asked by
Tara
1,572 views
Given these standard reduction potentials at 25 C
1. Cr3+ + e- ===> Cr2+ E1=-0.407 V 2. Cr2+ + 2e- ===> Cr(s) E2=-0.913 V
3 answers
asked by
Bridget
1,524 views
Which of the following substances would be expected to be the strongest electrolyte (best conductor of electricity) in solution
1 answer
asked by
sara
1,512 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 answer
asked by
shanise
1,464 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
10 answers
asked by
Cassie
1,437 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 answer
asked by
Rian
1,422 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 answer
asked by
mercedes
1,410 views
• 1. Draw a segment and create a perpendicular bisector using the geometric construction techniques.
• 2. Draw an angle and
5 answers
asked by
Abby
1,396 views
1. Direct misconduct by a police officer, such as extorting money from drug dealers, would be an example of which of the
6 answers
asked by
Any
1,365 views
what mass(g) of NH3 must be dissolved in 475g of methanol to make a 0.25m solution
2 answers
asked by
Anonymous
1,340 views
6. Drag-race tires in contact with an asphalt surface have a very high coefficient of static friction. Assuming a constant
1 answer
asked by
SHAWN
1,292 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 answer
asked by
Bobby
1,193 views
If your heating generates soot on the bottom of the crucible, what is the origin of the soot? How will this soot collection
2 answers
asked by
Kelsey
1,176 views
1. What was described as the ' hardest work " slaves did ? ( 1point )
A. work in the rice fields B . Work in the tobacco fields
2 answers
asked by
lovey
1,167 views
1. Which of the following positions holds that moral beliefs vary from person to person, and that one person's beliefs and
3 answers
asked by
Any
1,153 views
Can someone please explain how to do this problem?
A regional soccer tournament has 64 participating teams. In the first round,
1 answer
asked by
Jane
1,150 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 answer
asked by
Anonymous
1,135 views
Is the inequality sometimes,always,never,true -2(2x+9)>-4 x+9
2 answers
asked by
tina
1,100 views
Show all steps evaluate the expression for the given value of the variable 5a+5b,a=-6,b=-5thanks
2 answers
asked by
Lucky
1,069 views
1. With respect to religion and morality, the problem of common ground refers to the fact that religious commands and
1 answer
asked by
Any
1,067 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 answer
asked by
Cherie
1,037 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 answer
asked by
Carlos
1,020 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 answer
asked by
Mila
987 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
2 answers
asked by
Izzy
980 views
hi, can somebody pls check my work asap!??
1. Who was the African American who called the war with Mexico "disgraceful" and
15 answers
asked by
TTR+S<3
963 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 answer
asked by
Pam
955 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),
0 answers
asked by
robert
953 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 answer
asked by
Sonya
937 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
4 answers
asked by
Mike
933 views
A -kg block is initially at rest on a frictionless horizontal surface. It is pulled with a constant horizontal force N. How long
0 answers
asked by
cristy
923 views
4. which reference can help you find synonyms and antonyms for words ? ( 1point )
A. dictionary B . encyclopedia c. glossary d.
3 answers
asked by
::)))sfjslf
906 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
0 answers
asked by
hershi
899 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 answer
asked by
Bridget
896 views
Two poles are 20 feet tall and 30 feet tall, respectively. If they are 30 feet apart, how far is it
from the top of one pole to
4 answers
asked by
Amanda
863 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
2 answers
asked by
Gabby
833 views
Does anyone know if north central is hyphenated AP style? my book doesn't really specify.
1 answer
asked by
blaze
827 views
An aqueous solution is analyzed and found to contain potassium ions and sulfite ions. Write the equation for the dissolution of
1 answer
asked by
lebanon
818 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
3 answers
asked by
Kat
809 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
0 answers
asked by
Anonymous
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
0 answers
asked by
Frank
788 views
could anyone help me answer this question , plz , thank you
The following question is about the poem " We are cool " 3.
0 answers
asked by
lovey
788 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
0 answers
asked by
shanna
787 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 answer
asked by
sean
787 views
The entire region of Northern Africa and Southwest Asia is dominated by
A. climates in which the evaporation exceeds
1 answer
asked by
mariy
778 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
0 answers
asked by
lawrenvceshrenk
771 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 answer
asked by
Roxanne
771 views
Underline the direct objects in the sentences, or extracts from sentences.
1. The next day I visited a good friend of mine.
5 answers
asked by
Anonymous
771 views
Find the APR, or stated rate, in each of the following cases
EAR: 12.4 semianually 13.3 monthly 11.0 weekly 14.7 infintely
1 answer
asked by
Jade
768 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
0 answers
asked by
sana
764 views
wt can i study with maths and physical sciences and life sciences besides engeenering thngs ?please help
5 answers
asked by
masaka cindy
745 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
2 answers
asked by
Hanna Hyung
745 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 answer
asked by
shirly
743 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
2 answers
asked by
mercedes
743 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
2 answers
asked by
chris
742 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
6 answers
asked by
tricia
735 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
3 answers
asked by
sakiss
734 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
3 answers
asked by
#1Student
726 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 answer
asked by
Tevin
725 views
Where does LeVar Buton currently live?
2 answers
asked by
Anonymous
718 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 answer
asked by
Me
716 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 answer
asked by
Amanda
715 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 answer
asked by
cris
714 views
2. What was Mustafa Ataturk's contribution to modern Turkey?
A.He began the process of turning Turkey into a modernized, secular
3 answers
asked by
mariy
714 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 answer
asked by
helga
711 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
3 answers
asked by
James
707 views
Fill in the blanks with the appropriate raw score, z score, t scores . Mean =50, sd = 5. Raw 35
1 answer
asked by
Saf
706 views
Which of the following substances can act as a Bronsted acid in aqueous solution? (Select all that apply.)
NH41+ H2 O2 C4H10
1 answer
asked by
Julie
701 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
0 answers
asked by
Anonymous
692 views
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