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Questions Asked on March 11, 2013

13. A catapult launches a boulder with an upward velocity of 148 ft/s. The height of the boulder (h) in feet after t seconds is
1. 46 answers
2. asked by Jim
3. 16,971 views
Complete each sentence with the correct form of the verb in parentheses.1. La clase de matemáticas (terminar) a las cuatro. 2.
1. 5 answers
2. asked by kim
3. 12,693 views
1) A 20 kg rock is on the edge of a 100 m cliff.a. What potential energy does the rock possess relative to the base of the
1. 2 answers
2. asked by Isis
3. 12,108 views
Which kind of function best models the data in the table? Use differences or ratios.x y 0 1.7 1 6.8 2 27.2 3 108.8 4 435.2
1. 4 answers
2. asked by Cassie
3. 6,441 views
A pyramid has a height of 5 in. and a surface area of 90 in2. Find the surface area of a similar pyramid with a height of 10 in.
1. 11 answers
2. asked by peanut
3. 5,268 views
A rubber band has a"spring constant" of 45 N/m. When the rubber band is pulled by a force of 9.8 N , how far will it stretch and
1. 2 answers
2. asked by ryan
3. 5,099 views
A saline solution contains 1.1% NaCl by mass. How much NaCl is present in 87.2 g of this solution?
1. 3 answers
2. asked by Amee
3. 4,969 views
Given the following values, which number would be considered an outlier?0.9, 2.1, 3.2, 3.9, 7.4, 5.8, 7.2, 8, 9.1 2.1 9.1 8 7.4
1. 11 answers
2. asked by Not Sure
3. 4,589 views
How many kilojoules of heat are absorbed when 40.7g of MgO(s) is decomposed into Mg(s) and O2 (g) at constant pressure?
1. 3 answers
2. asked by Anonymous
3. 4,305 views
1) Which U.S. region has the smallest states by land area?a. West b. Midwest c. Northeast d. South My Answer: 1) C NORTHEAST
1. 62 answers
2. asked by Wendy
3. 4,042 views
1) The South is an excellent place to grow such crops as cotton, rice, tobacco, and sugar cane. Which of the following is NOT
1. 39 answers
2. asked by Dianna
3. 4,023 views
What mass of F2 is needed to produce 116 g of PF3 if the reaction has a 77.4% yield?
1. 2 answers
2. asked by bill
3. 3,909 views
A student throws two beanbags in the air, one straightup and the other one at a 30° angle from the vertical. Both beanbags are
1. 1 answer
2. asked by ella
3. 3,368 views
What is the oxidation state of Cr in each of the following compounds?(a) CrO (b) CrO3 (c) Cr2 O3
1. 5 answers
2. asked by Amee
3. 3,353 views
Imagine you are one of the factory workers at Lowell Mills tasked with creating the headline story for this month’s factory
1. 13 answers
2. asked by Anonymous
3. 3,109 views
A sound of constant frequency is produced by the si-ren on top of a firehouse. Compared to the frequen-cy produced by the siren,
1. 1 answer
2. asked by Iris
3. 2,884 views
The density of gas containing chlorine and oxygen has density of 2.875 g/l at 756.0 mm Hg and 11 degrees Celsius what is the
1. 1 answer
2. asked by Anonymous
3. 2,883 views
p w s a f m i xcopy the letters above on a piece of paper. cross out the second and last letters. replace all vowels with
1. 1 answer
2. asked by mary
3. 2,871 views
Eric plays piano and guitar. He practiced on both instruments for a total of 8 hours this week. He practiced the piano for 3/4
1. 7 answers
2. asked by Ms.Vargas
3. 2,672 views
Compare and contrast how the United States and Canada achieved independence.Why do you think the United States has 10 times more
1. 70 answers
2. asked by Sammy
3. 2,632 views
The length of a piece of fabric is 8y yards. Landon cuts 7 yards from it to make some cushion covers. He then cuts another 3y
1. 5 answers
2. asked by TB
3. 2,569 views
please help and explain.At a certain temperature, Keq = 10.5 for the equilibrium below. CO(g) + 2 H2(g) equilibrium reaction
1. 4 answers
2. asked by Julia
3. 2,470 views
How many grams of KO2 are needed to produce 370.0 L of O2 at 20.0 degrees Celsius and 1.00 atm?4KO2(s) +2CO2(g) --> 2K2CO3(s)+
1. 1 answer
2. asked by Anonymous
3. 2,470 views
melinda charges $4 per hour for babysitting. Mrs Garden does not want to spend more than $25 for babysitting. what is the
1. 6 answers
2. asked by haley
3. 2,331 views
A 250N force is applied at an angle of 32 degrees above the horizontal to a 96kg box causing it to slide along a floor. The
1. 1 answer
2. asked by Julia
3. 2,295 views
A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are,
1. 1 answer
2. asked by chel
3. 2,191 views
Your grandfather clock’s pendulum has a length of 0.9930 m. If the clock loses 95.6 seconds per day, by how many millimeters
1. 2 answers
2. asked by Andrew
3. 2,183 views
The area of a wetland drops by 1/4 every 8 years. What percent of its total area disappears after 40 years?Percent lost %?
1. 3 answers
2. asked by Orla
3. 2,037 views
Ethanol, C2H5OH, is being promoted as a clean fuel and is used as an additive in many gasolinemixtures. Calculate the ΔH°rxn
1. 2 answers
2. asked by Anonymous
3. 1,927 views
nadia is pulling a tarp along level ground with a force of 25 pounds directed along the tarp. If the tarp makes an angle of 50
1. 2 answers
2. asked by Tori
3. 1,848 views
For the following demand equation compute the elasticity of demand and determine whether the demand is elastic, unitary, or
1. 1 answer
2. asked by Tay
3. 1,789 views
There are 16 cubic boxes of erasers in a case. What are all the possible dimensions for a case of erasers ? please help need in
1. 2 answers
2. asked by Chloe
3. 1,706 views
Suppose you have a standard deck 52 cards (4 suits: hearts, diamonds, clubs, and spades each suit has 13 cards (1/4 of the deck)
1. 1 answer
2. asked by Anonymous
3. 1,626 views
An equilibrium mixture of the following reaction was found to have [SO3] = 0.391 M and [O2] = 0.125 M at 600 °C. What is the
1. 2 answers
2. asked by Amee
3. 1,600 views
the team____ won the game is my favoritea. which b. whom c.who d. that
1. 1 answer
2. asked by mary
3. 1,549 views
A ladder is 25 ft long. The ladder needs to reach to a window that is 24 ft above the ground. How far away from the building
1. 1 answer
2. asked by Annie
3. 1,547 views
Minh is covering a necklace box with gift wrap. The necklace box is15 centimeters long, 8 centimeters wide, and 2 centimeters
1. 3 answers
2. asked by Math lady
3. 1,532 views
A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equationy = –0.04x2 +
1. 5 answers
2. asked by Cassie
3. 1,528 views
how a bleeder resistor (R = 260 k) is used to discharge a capacitor (C = 85.0 µF) after an electronic device is shut off,
1. 2 answers
2. asked by taryn
3. 1,513 views
1) From 1892 to 1954, millions of immigrants entered the United States through an immigration station in the Northeast calleda.
1. 34 answers
2. asked by Sandy
3. 1,496 views
The freezer is always less than 6 degrees Fahrenheit write an inequality for the temperature t in degrees. Graph the inequality
1. 2 answers
2. asked by Jared
3. 1,484 views
A 20 foot ladder is leaning aagainst a wall the base of the ladder is 7 feet away from the.wall hkw high up the wall will the
1. 2 answers
2. asked by Alyssa
3. 1,483 views
Given that a cell's structure reflects its function, what function would you predict for a cell with a large Golgi apparatus?
1. 1 answer
2. asked by Tevin
3. 1,458 views
If ABCDE and LMNOP are similar polygons, then the ratio of AB to LM must be equal to the ratio of CD to NO. (Assume and are
1. 1 answer
2. asked by Anonymous
3. 1,392 views
Write the following decimals as fractions and find the Quotients.4.5 divided by 0.9= 0.6 divided by 0.12= 1.2 divided by 0.5=
1. 2 answers
2. asked by Gabriel
3. 1,376 views
A ball is thrown into the air with an upward velocity of 28 ft/s. Its height (h) in feet after t seconds is given by the
1. 2 answers
2. asked by Cassie
3. 1,362 views
Zinc metal reacts with hydrochloric acid according to the following equation: Zn + 2HCl yields ZnCl2 + H2. How many grams of
1. 2 answers
2. asked by Raymond
3. 1,318 views
Water has an extremely high boiling point compared to other compounds of similar molar mass because of ?Hydrogen Bond Adhesive
1. 2 answers
2. asked by Shadow
3. 1,294 views
Determine the hydronium ion concentration in a solution that is 0.00018 M Ca(OH)2. Answer in units of M
1. 1 answer
2. asked by Ashleigh
3. 1,292 views
In right triangle ABC what is the arithmetic mean (average), in degrees, of the measures of the two smallest angles?Explain how
1. 2 answers
2. asked by Sally
3. 1,244 views
What is the silver ion concentration in a solution prepared by mixing 345 mL of 0.352 M silver nitrate with 443 mL of 0.511 M
1. 1 answer
2. asked by CP
3. 1,225 views
1L of a buffer composed of NaHC2O4 and Na2C2O4 has a pHof 4.0 and a total molarity of 1.a). what would the effect on the pH be
1. 5 answers
2. asked by Ashley
3. 1,169 views
Liquid Nitrogen boils at -196 degrees Celsius . What is the temperture on the Kelvin scale ?
1. 4 answers
2. asked by Bella
3. 1,158 views
ABCD is a square with AB=25. P is a point within ABCD such that PA=24 and PB=7. What is the value of PD^2?
1. 1 answer
2. asked by Anonymous...please help!
3. 1,157 views
The swimming pool that sunny goes to has dimensions 20 meters long, 8 meters wide and 3 meters deep. What is the volume of water
1. 2 answers
2. asked by Anonymous...anyone please help!,
3. 1,128 views
the longer side of a parallelogram is 54cm and the corresponding altitude is 16cm. if the altitude corresponding to the shorter
1. 1 answer
2. asked by sa
3. 1,119 views
How many distinct 3 digit odd integers are there? Distinct meaning none of the digits repeat.
1. 3 answers
2. asked by Anonymous
3. 1,114 views
The reorder point [see equation 14.6] is defined as the lead-time demand for an item. In cases of long lead times, the lead tie
1. 1 answer
2. asked by Anonymous
3. 1,113 views
Describe the apparent motion of the stars and planets that is caused by the revolution and rotation of the earth.
1. 1 answer
2. asked by Aj
3. 1,112 views
A Chinook salmon has a maximum underwater speed of 3.0 m/s, and can jump out of the water vertically with a speed of 4.8 m/s. A
1. 0 answers
2. asked by Anonymous
3. 1,105 views
4. Landon is standing in a hole that is 6.5 ft deep. He throws a rock, and it goes up into the air, out of the hole, and then
1. 2 answers
2. asked by Jim
3. 1,098 views
If an object is dropped from a height of 144 ft, the function h(t) = –16t² + 144 gives the height of the object after t
1. 3 answers
2. asked by Cassie
3. 1,098 views
Identify the participle and the word it modifies in the following sentence.The boy’s hateful words caused the girl so much
1. 1 answer
2. asked by Cassie
3. 1,083 views
a 2.50mL sample of dry air in a cylinder exerts a pressure of3.00atm at room temperature. without changing the temperature, a
1. 2 answers
2. asked by jm
3. 1,079 views
Draw the graph of the linear equation whose solutions are represented by the points having the sum of the coordinates as 10
1. 2 answers
2. asked by anoynomous
3. 1,079 views
Aboard at a ship’s helm,A young steersman steering with care. Through fog on a sea-coast dolefully ringing, An ocean-bell—O
1. 3 answers
2. asked by Cheryl
3. 1,078 views
Two particles each have a mass of 5.5 10-3 kg. One has a charge of +4.8 10-6 C, and the other has a charge of -4.8 10-6 C. They
1. 0 answers
2. asked by Anonymous
3. 1,071 views
the decomposition of h2o2 is first order reation following up the decom position it was found that the remaining h2o2 after 45
1. 0 answers
2. asked by Anonymous
3. 1,063 views
How much work is required to stop a car that is 800.0 kg car that is traveling at 20.0 m/s?
1. 1 answer
2. asked by Kizzy
3. 1,058 views
Hello! I am here because I have a question. In math we are starting a new unit: Probability. One of the questions on my homework
1. 1 answer
2. asked by Curious
3. 1,021 views
when a diorite partially melts, which element(1)............ decreases in the melt as a(2).......... magma forms.I have few
1. 1 answer
2. asked by john
3. 1,020 views
In triangle cth angle c is 17 and c=12 and h=31How many distinct triangles CTH are possible? Find all measures of h to the
1. 0 answers
2. asked by mirielle
3. 1,018 views
what mass in grams of sodium hydroxide is produced if 20.0g of sodium metal reacts with excess water according ro the chemical
1. 1 answer
2. asked by Fatima
3. 1,001 views
castor brought 6 3/4 carat cakes to share with 26 students. did castor bring enough for each student to have 1/4 of cake?
1. 10 answers
2. asked by dee
3. 998 views
How might the damming of an river affect an estuary at the river's mouth
1. 1 answer
2. asked by Anonymous
3. 994 views
Based on data from 1999 to 2001, the rate of change in the annual net sales of Pepsi-Cola North America may be modeled byR(t) =
1. 0 answers
2. asked by GERRY
3. 986 views
A 1.00 kg block of ice at zero degrees celsius is added to a picnic cooler. How much heat will the ice remove as it melts to
1. 1 answer
2. asked by Asia
3. 982 views
the angles of pentagon are(3x+5)(x+16)'(2x+9)'(3x-8) and (4x-15) find the value of x?
1. 2 answers
2. asked by Cabdirizak
3. 981 views
Two circular holes, one larger than the other, are cut in the side of a large water tank whose top is open to the atmosphere.
1. 0 answers
2. asked by chel
3. 973 views
A linear model can be used to describe the relationship between fuel economy(mpg) and horsepower (hp) for certain automobile
1. 1 answer
2. asked by Melissa
3. 964 views
Write about how you would compute this problem. 432 - 49I need some suggestions because I do not know what to write.
1. 5 answers
2. asked by Anonymous
3. 950 views
a 1.00 vessel at 0 degrees celcius contains 0.17 mols n2 1.0 mols h2 and 1.0 mols CH4 calculate the pressure of the gas mixture
1. 1 answer
2. asked by Anonymous
3. 935 views
I'm working on a problem dealing with calculating the heat of vaporization for vapor pressures problem.By substituting the
1. 1 answer
2. asked by Marcus
3. 892 views
* Simplify.a to the power of 4/3 times c ^1/6 all over 9b^3..... everything is in the parenthesis and is raised to the power of
1. 1 answer
2. asked by Anonymous
3. 890 views
What is cyclopentane with a butane called?
1. 1 answer
2. asked by Jenni
3. 887 views
There are a total of 116 foreign language students in a high school where they offer Spanish, French, and German. There are 22
1. 1 answer
2. asked by Sarah
3. 879 views
How many positive integers, a, are there such that 2027 divided by a leaves a remainder of 7?
1. 2 answers
2. asked by SOMEONE HELP ME!!
3. 876 views
JOHN is planting a garden. He wants to put a fence around it. If the garden is 3,000cm wide and 6,500 cm long, how much fence
1. 3 answers
2. asked by sam
3. 872 views
20mL ethanol(density=o.789g/mol) is dissolved in sufficient water to produce a 200mL solution. the density of the solution is
1. 2 answers
2. asked by mj
3. 864 views
Calculate the temperature (K) at which the equation as written is at equilibrium. Express your answer to three significant
1. 1 answer
2. asked by Penny
3. 856 views
Simplify.(Is this problem more clear than the previous post?)First part.. a^4/3 times c^1/6 all over 9b^3...everything is in the
1. 1 answer
2. asked by Anonymous
3. 823 views
You are concerned about the high rate of school droupouts in your community and have recentky addressed the youth at a local
1. 4 answers
2. asked by Anikie
3. 819 views
A farmer had a plot in the shape of a parallelogram. He divided into three equal parts, each of which was a separate
1. 0 answers
2. asked by anoynomous
3. 817 views
how to substitute 3x+y=114x-5y= -22
1. 1 answer
2. asked by Anonymous
3. 798 views
For the following demand equation compute the elasticity of demand and determine whether the demand is elastic, unitary, or
1. 0 answers
2. asked by Tay
3. 794 views
the height of a flagpole if a student stands 37 feet from it and determines the angle of elevation to be 34 degrees and her eyes
1. 1 answer
2. asked by David
3. 786 views
A 5.00-mL sample of an H3 PO4 solution of unknown concentration is titrated with a0.1003 M NaOH solution. A volume of 6.55 mL of
1. 1 answer
2. asked by Amee
3. 778 views
using substitution to solve-3x+y= -17 2x-3y=23
1. 1 answer
2. asked by Anonymous
3. 774 views
A 20 foot ladder is leaning aagainst a wall the base of the ladder is 7 feet away from the.wall hkw high up the wall will the
1. 1 answer
2. asked by Alyssa
3. 773 views
A sinusoidal voltage Δv = (65 V) sin (140t) is applied to a series RLC circuit with L = 100 mH, C = 175 μF, and R = 42 Ω.(a)
1. 1 answer
2. asked by Anonymous
3. 752 views

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