Eliza
Newest questions and responses by Eliza
Physics
A tennis ball of mass m = 0.060 kg and speed v = 15 m/s strikes a wall at a 45° angle and rebounds with the same speed at 45° (Fig. 729). What is the impulse given to the wall? I know the direction is normal and into the wall, but I cant get the
asked on January 11, 2019 
Social Studies
Q11 Americans began to notice growing differences between the northern and southern sections of the country. There were more people living in___________ in the north, which made it more urban.. More people lived on farms in the south, which made it more
asked on December 14, 2018 
Math
The ratio of the width to the length of a rectangular garden is 2:3 which of the following could be the width and length of the garden? PLEASE HELP THIS IS FOR MY ENED OF YEAR FINAL!!!!!! W=12 L=13 W=18 L=12 W=24 L=39 W=12 L=18
asked on April 28, 2018 
Social Studies
Which early civilization had a wellorganized, unified empire with an elaborate system of roads covering more than 10,000 miles? Iroquois Aztecs Mayan** Incas can someone check my answer please?
asked on August 31, 2017 
Chemistry
If 226 g of water is contained in a 311 g alu minum vessel at 11◦C and an additional 92 g of water at 91◦C is poured into the container, what is the final equilibrium temperature of the mixture? The specific heat of aluminum is 900 J/kg · ◦C and of
asked on August 26, 2017 
Chemistry
If 226 g of water is contained in a 311 g alu minum vessel at 11◦C and an additional 92 g of water at 91◦C is poured into the container, what is the final equilibrium temperature of the mixture? The specific heat of aluminum is 900 J/kg · ◦C and of
asked on August 26, 2017 
Chemistry
A 7 gallon bucket of water of mass 26.502 kg and temperature 100◦C is added to a 62 gallon gallon tub of water of mass 234.732 kg having a temperature of 10◦C. What is the final equilibrium temperature of the mixture? Assume there is no loss of heat to
asked on August 26, 2017 
Chemistry
A 300 g glass thermometer initially at 32 ◦C is put into 165 cm3 of hot water at 88 ◦C. Find the final temperature of the ther mometer, assuming no heat flows to the surroundings. The specific heat of glass is 0.2 cal/g ·◦ C and of water 1 cal/g
asked on August 26, 2017 
math
What is the area of a quadrilateral ABCD, if AB = 5 cm, BC = 13 cm, CD = 9 cm, DA = 15 cm, AC = 12 cm?
asked on May 29, 2017 
Chemistry
35.0mL of 0.050 M HCl is titrated with 0.050 M NH3 (Kb= 1.8 x 10^5). The pH of the analyte solution after 15.0mL addition of NH3 titrant is?
asked on April 11, 2017 
Physics
a) Rain drops hitting the side window of a car in motion often leave diagonal streaks if there is no wind. Why? b) For a certain projectile, the horizontal range is twice in magnitude of the maximum height attained by it. Find its angle of projection.
asked on November 3, 2016 
Chemistry
What is the salt most likely to be formed at the junction of the Fe2+ions and SiO4+
asked on March 26, 2016 
Chemistry
How can dilute a 1 M HCl solution to obtain 100 mL of HCl solution 0,1 M?
asked on March 25, 2016 
Please check Ms. Sue on math!
An ice cream shop offers the toppings shown below. How many 4topping ice cream sundaes can you make? chocolate chips walnuts strawberry sprinkles caramel hot fudge whipped cream gummy bears 11 28 ** 30 35
asked on February 26, 2016 
Probability! Check please!
An ice cream shop offers the toppings shown below. How many 4topping ice cream sundaes can you make? chocolate chips walnuts strawberry sprinkles caramel hot fudge whipped cream gummy bears 11 28 ** 30 35
asked on February 26, 2016 
Physical Science
A ferromagnetic material is A) always a magnet B) a magnet if it's domains are aligned C) a magnet if it's domains are not aligned D) never a magnet I think it is A....
asked on January 26, 2016 
Science
A ferromagnetic material is A) always a magnet B) a magnet if it's domains are aligned C) a magnet if it's domains are not aligned D) never a magnet I'm pretty sure it's A....
asked on January 26, 2016 
U.S. Gov. & Ec.
What is the main feature of publicinterest groups? A. They cannot collect dues, so membership is free. B. They have special access to elected officials. C. They benefit most people, even those not in the group. D. They are supported by everyone,
asked on January 22, 2016 
Science
a. A human cell is placed in a container of sugar water. Explain what would occur, if the cell membrane is impermeable to sugar. b. Another cell is placed into a container of sugar water. However, this cell has the capability to allow large molecules such
asked on October 11, 2015 
Biology
a. A human cell is placed in a container of sugar water. Explain what would occur, if the cell membrane is impermeable to sugar. b. Another cell is placed into a container of sugar water. However, this cell has the capability to allow large molecules such
asked on October 3, 2015 
Chemistry (Solutions)
Since 1991, house paint produced in Canada must contain no more than 600 ppm of lead. What is the maximum mass of lead permitted ion a 2.50 kg can of paint
asked on December 16, 2014 
math
sqrt(2(13.7)/9.8)
asked on October 10, 2014 
Algebra
Bill can mow his mother's lawn in 45 minutes. His brother Jim can mow it in 75 minutes. How long will it take them to do it together? Can someone help with with the work? But also an explanation of how it works? I want to understand this so I don't miss it
asked on September 6, 2014 
Algebra
Suppose that A = D + E and that D/A = 0.80. Solve for D/E. These are the steps I have taken, but I don't know how to proceed. 1. Divide A = D + E by A. 2. 1 = .80 + E/A 3. .20 = E/A 4. A/A = 1, D/A = .80, E/A = .20.
asked on September 6, 2014 
physics
A certain transverse wave is described by the equation y(x,t) = (6.50 mm)sin2pi((t/0.0360 s)(x/0.280m)) Determine the wave's (a) amplitude (b) wavelength (c) frequency (d) speed of propagation and (e) direction of propagation
asked on July 9, 2014 
Chemistry
A 26.0 g sample of ice at 17.0°C is mixed with 124.0 g of water at 81.0°C. What is the equilibrium temperature?ºC.
asked on April 4, 2014 
american history
in the election of 1860, the won the electoral votes of all y the free states, except a fraction of t he new jersey votes. a)constitutional union b)Whigs c)democrats d)republican
asked on December 17, 2013 
Maths
Show that 8^x =square root 2 5^x=1/square root 25 (3)
asked on December 1, 2013 
Chem
Give three examples each of household items that have: a. different structures and exhibit different properties b. same chemical makeup composition but a different structure, hence, different properties c. the same properties but with different chemical
asked on July 11, 2013 
Chemistry
Give three examples each of household items that have: a. different structures and exhibit different properties b. same chemical makeup composition but a different structure, hence, different properties c. the same properties but with different chemical
asked on July 11, 2013 
Chemistry
What is the mass of a cylinder of lead that is 2.50 cm in diameter and 5.50 cm long. The density of lead is 11.4 g/mL. Find the volume of the cylinder.
asked on July 8, 2013 
algebra
A coin is tossed 3 times. Find the probability of obtaining the following: a) heads on the first and last toss, and tails on the other toss b) at least 2 heads c) at most 2 heads
asked on July 7, 2013 
algebra
A computer repair shop has estimated the probability that a computer sent to the shop has a bad modem is 1/8, the probability that the computer has a bad CPU is 1/5, and the probability that it has a bad drive is 1/3. If we assume that modems, CPUs, and
asked on July 7, 2013 
math
The sales of a certain product after an initial release can be found by the equation where s represents the total number of units sold and t represents the time in weeks after release. How many weeks will pass before the product sells about 150 units?
asked on June 13, 2013 
Physics
A car with a mass of 1815 kg is traveling down a road for 50 meters. It takes the car five seconds to travel this distance. Calculate the velocity, momentum, and kinetic energy of the car.
asked on January 14, 2013 
MATH
A NICKLE HAS A MASS OF 5G AND A VOLUME OF APPROXIMALEY 0.689 CM3. WHAT IS THE APPROXIMATE DENSITY OF A NICKLE?
asked on December 11, 2012 
Calculus
ind the derivative of y= (2x^2+1)/(x3)
asked on November 28, 2012 
chemistry (molecular calculations)
If you had 106.35 grams of Cl, how much Na would be required to convert i all to NaCl. I worked this problem and got 41.83 grams of Na, but I'm not sure if this is correct.
asked on November 13, 2012 
Molecular calculations (chemistry)
If you had 19 grams of F, how much Ca would you need to convert all of the F to CaF2?
asked on November 13, 2012 
algebra
Bad boy is fleeing the scene of a crime at 75 mph. Half an hr. later the police chase after him following his same routetraveling at 90 mph. Bad boy thought he got away... but he didn't... How long had Bad boy been traveling when the police caught him?
asked on October 15, 2012 
Basic Math
How can absolute value help one to understand the size of a quantity? Give an example. I'll appreciate anyone's help thanks. :)
asked on October 10, 2012 
Basic Math
How can absolute value help one to understand the size of a quantity? Give an example. I'll appreciate anyone's help thanks. :)
asked on October 10, 2012 
Chemistry
Upon decomposition, one sample of magnesium fluoride produced 1.65kg of magnesium and 2.58kg of fluorine. A second sample produced 1.50 kg of magnesium. How much fluorine (in grams) did the second sample produce?
asked on October 9, 2012 
Chemistry
Can someone please help me solve this homework problem for my chemistry class.It's my last problem and I'm stuck!:/ Thanks :) A 4.0*10^1kg sample of water absorbs 308KJ of heat. If the water was initially at 25.5 C, what is its final temperature?
asked on September 17, 2012 
Science
Can someone please help me solve this homework problem for my chemistry class.Thanks A 4.0*10^1kg sample of water absorbs 308KJ of heat. If the water was initially at 25.5 C, what is its final temperature?
asked on September 17, 2012 
Chemistry
When 47.3J of heat are added to 13.0g of a liquid, its temperature rises by 1.76C. What is the heat capacity of the liquid?
asked on September 17, 2012 
math
Oops,first question was wrong. Sorry. There are 30 kids in a class room.3/5 of them are girls. How many are boys and how many are girls.
asked on June 5, 2012 
math
There are 30 kids in a class. 3/5 are girls, how many of the are girls
asked on June 5, 2012 
math
Suppose the weekly use of gasoline for motor travel by adults in North America is approximately normally distributed, with a mean of 14 gallons and a standard deviation of 6 gallons. What proportion of adults use more than 18 gallons per week?
asked on April 16, 2012 
Math
if the length of a rectangular pyramid is made seven times longer, how many times the volume of the original figure is the volume of the new figure?
asked on February 16, 2012 
pharmaceutical calculations
1. A chemical crystal weighs 3.630 grams in air and 1.820 grams when immersed in an oil. If the specific gravity of the oil is 0.837, what is the specific gravity of the chemical? 2. A piece of wax weighs 42.65 grams in air, and a sinker weighs 38.42 grams
asked on February 1, 2012 
calc
The top half of a storage tank is a circular cylinder that is 5 meters tall and has a diameter 2 meters. The bottom half of the tank is shaped like an 8meter inverted cone (pointed down). Let h represent the depth of the tank's contents. At t = 0 minutes,
asked on December 28, 2011 
calc
Suppose the function f(x)=4/x a) Use the definition of the derivative to show that f ' (2) = 1. b) Write an equation for the line tangent to the graph of f at x = 2.
asked on December 28, 2011 
calc
Suppose the function a) Use the definition of the derivative to show that f ' (2) = 1. b) Write an equation for the line tangent to the graph of f at x = 2.
asked on December 28, 2011 
calculus
How long will it take an investment that pays 5% compunded annually to double in value?
asked on November 2, 2011 
Algebra
(5y3)/3  (2y1)/2=1 note: the divide signs are the fraction bars. 5(2(x1)  (x+1))=9 .08n.09(n2)=5.08 2(3(x1)+3x) + 2(x35(x3)x)=10 please show me how you got the answers thanks
asked on November 2, 2011 
math
find the length of a side of a square whose area is 400 cm^2
asked on August 30, 2011 
PHYSICS
A thundercloud has an electric charge of 43.2 C near the top of the cloud and 38.7 C near the bottom of the cloud. The magnitude of the electric force between these two charges is 3.95 x 106 N. What is the average separation between these charges? I'm
asked on March 15, 2011 
ALGEBRA II
In circle O, chords AB and CD are congruent. AB measures 2x + y, while CD has a length of 16.5. Two smaller chords, GH and KL, are also congruent. GH measures x + 2y, while KL has a length of 13.5. Find the values of x and y.
asked on March 9, 2011 
Physics
I was walking through my local home supply store the other day carrying a 10 ft length of plastic pipe. The pipe was horizontal and my hand was supporting the middle of the pipe. I noticed that when I took two steps each second the ends of the pipe would
asked on March 2, 2011 
geometry
In right triangle ABC, angle A=3, angle B=60, and angle C=90. Find AB with AC is 12 ?
asked on December 6, 2010 
12th Grade Calculus
1. a.) Find an equation for the line perpendicular to the tangent curve y=x^3  9x + 5 at the point (3,5) [* for a. the answer that I obtained was y5 = 1/18 (x3) ] b.) What is the smallest slope on the curve? At what point on the curve does the curve
asked on November 28, 2010 
social studies (regions)
Regions are a way to describe and compare places. A region is identified by its common characteristics and/or features. Identify five common five common regions throughout the world accoarding to their common characteristics, (ex. Deserts: the Sahara and
asked on September 29, 2010 
social studies (latitude & longitude)
what is the city and continent name of these : 34° S and 58° W 34° S and 18° E 51° N and 0° 30° N and 31° E 40° N and 2° W 36° N and 4° W °°°° Please please help ! i have been trying to find the answer to these for a long time but i just
asked on September 8, 2010 
12th grade  Math
Solve by Factoring: 1.) x² x + 12 = 0 2.) 4x³ + 21x²  18x = 0 3.) x³ x²  x + 1
asked on September 1, 2010 
12th grade  Math
1.) Explain why 815i = 17
asked on September 1, 2010 
Physics
An iceboat is at rest on a frictionless frozen lake when a sudden wind exerts a constant force of 220 N, toward east, on the boat. due to the angle of the sail, the wind causes the boat to slide in a staraight line for a distance of 8.5 m in a direction
asked on July 22, 2010 
language arts
in this sentence what is the contrast " Water like fat raindrops that fall from skinny trees "
asked on May 10, 2010 
S.S
What did Europe begin in the mid1400s?
asked on April 19, 2010 
S.S
Is the Renaissance the beginning of the Modern Age?
asked on April 19, 2010 
Reading
In the sentence "Each autumn, some hurricanes track directly through the Bermuda Triangle." would definition 1.a path along which something travels 2.observe the progress of or 3. move over or along, fit for the word travel?
asked on April 18, 2010 
Reading
In the sentence "Ships have sunk for no apparent reason", would the word obvious, general,or simple best fit the word apparent?
asked on April 18, 2010 
Reading
Which word would fit best for the word endangered, suffering, disappearing,or menacing in the sentence "With fewer than 100 Vancouver Island marmots living in the wild, it is one of the world's most endangered animals." ?
asked on April 16, 2010 
math
solve each system of equations by substitution. y=3x9 please help explain how to solve this using substitution.
asked on May 13, 2009 
Managerial Economics
Which of the following cost functions exhibits cost complementarity? A. 4Q1Q2 + 8Q1 B. 4Q2 + 8Q1 C. 6Q1Q2  Q1 D. 4Q2Q1 + 8Q1
asked on February 6, 2009 
Math
I cant figure this out, does 235+z=xy/3 or does 354+z=xy/3? thanks!
asked on January 24, 2009 
Algebra
How can this be? I am supposed to solve (38i)(29i). Once it is broken down, you get (3+2)(8i9i) I got 1+1i, but my book said the answer is 1+i. Thanks for your help.
asked on November 20, 2008 
Algebra
How do you do the quadratic equation when there are only two numbers, such as 5x and 15, not the three needed?
asked on November 19, 2008 
Math
Hi everyone. Would someone be able to help me with this problems? I know it's a lot, if you only want to help with one or two, that is fine!! 9. Could you show how to use factoring and the zeroproudct property to find the zeros of each quadratic function?
asked on November 19, 2008 
Chemistry
A mole of pennies stackd on top of one another would reach from here to the sun and back how many times?
asked on February 7, 2008 
MATHMATICS
can anyone help me with parcial products?
asked on September 12, 2007 
Pre algerba
Name the property shown by each statment. 9+(5+35)=(9+5)+35
asked on August 27, 2007 
Physics check my answers!
Check my answers thanks! 1. A diesel automobile outputs ThermE, RadE, ElectE and KinE from an input of a. NuclE b. ChemE c. ElectE d. KinE I think its b Two race cars cross the finish line at exactly the same time but the first car is twice as massive as
asked on February 25, 2007 
science
does anyone know what the effects of low level ozone is on animals and plants? Moderate to high levels of ozone causes respiratory problems in animals. it also slowly kills trees. This can be seen in portions of the San Bernardino Mountains affected by Los
asked on September 10, 2006

Math
1.B 2.B 3.D 4.C 5.B 6.B 7.A 8.D 9.A 10.A 11.D 12.B 13.C 14.D 15.C 16.D 17.A 18.C 19.A 20.D 21.A
posted on December 3, 2018 
LA
Lair and Liar, to tell them apart isn't that hard... Except if you're not to smart.
posted on May 9, 2018 
LA
Btw never trust someone who can't tell the difference between Liar, and Lair. Just saying.
posted on May 9, 2018 
LA
Okay just remember that even if they have perfect grammar doesn't always mean that they're right, or if it looks formalmight not be right so fact check it, and everything look at the replies and make sure who's correct because there are some people that
posted on May 9, 2018 
LA walk two moons
Yikes, I feel like a mom
posted on May 9, 2018 
LA walk two moons
Okay they were trying to get their answers checked, she meant that she wanted us to C H E C K the answers, not tell her. You are all acting incredibly immature for a mistake in vocabulary. Ms. Sue, and Writeacher you had no right to do that, they simply
posted on May 9, 2018 
Math PLZZ
okay i cant stand people lying, so for the 8th grade practice it is D D A C
posted on November 21, 2017 
help please english
I only got 7/10 with Kiera's answers.
posted on October 13, 2017 
Math
p=2s
posted on April 27, 2017 
English
CORRECT ANSWERS ARE: 1D 2B 3D 4A 5A 6B 7A 8D 9D 10C 11A 12B 13C 14A 15C 16C 17B 18D 19A
posted on April 24, 2017 
Chemistry
Thanks :)
posted on March 26, 2016 
Physical Science
Oh gosh...then would it be B?
posted on January 26, 2016 
LANG ARTS
Now you'll "know" next time :)
posted on January 26, 2016 
Science
Your question makes no sense, try providing a more detailed question.
posted on January 26, 2016 
LANG ARTS
That's not what this site is for....please don't ask those kinds of questions...because they definitely won't be answered, so don't waist your time and the teachers' time asking them.
posted on January 26, 2016 
Technology
Correct
posted on January 26, 2016