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2013
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Questions Asked on April 26, 2013

To estimate the height of a building, two students find the angle of elevation from a point (at ground level) down the street
1. 1 answer
2. asked by marie darling
3. 7,381 views
The four sequential sides of a quadrilateral have lengths a=3.6, b=5.3, c=8.4, and d=10.2 (all measured in yards). The angle
1. 2 answers
2. asked by marie darling
3. 6,801 views
it has been found that 85.6% of all enrolled college and university students in the U.S. are undergraduates. A random sample of
1. 4 answers
2. asked by Paula
3. 6,678 views
what pressure (in atm) would be exerted by 76g of fluorine gas in a 1.5 litre vessel at -37 degrees Celsius?
1. 3 answers
2. asked by jane
3. 5,072 views
Do you think it is more useful to have the percent by mass of water in hydrate or the percentage composition, assuming that you
1. 3 answers
2. asked by cazzy
3. 4,561 views
4) a student score is 83 and 91 on her first two quizzes. write and solve a compound inequality to find possible values for a
1. 3 answers
2. asked by hips
3. 3,944 views
1) the width of a rectangle is 33 centimeters. the perimeter is at least 776 centimeters. write an inequality to find the length
1. 1 answer
2. asked by hips
3. 3,900 views
A spherical shell of radius R carries a uniform surface charge density (charge per unit area) σ. The center of the sphere is at
1. 133 answers
2. asked by s
3. 2,795 views
which of the following molecules has a conformational isomer?CHCH CH2CH2 CH3CH2CH2CH3 CH2CCCH2 I think its either 2 or 4 but
1. 1 answer
2. asked by erin
3. 2,566 views
3) the ideal width of a safety belt strap for a certain automobile is 5 cm. an actual width can vary by at most 0.35 cm. write
1. 1 answer
2. asked by hips
3. 2,432 views
2 For a sample of n = 20 individuals, how large a Pearson correlation is necessary to be statistically significant for a
1. 1 answer
2. asked by Chioma
3. 2,300 views
1. All of the following are helpful techniques in effective speech delivery EXCEPT:A. pauses. B. voice inflection. C. filler
1. 1 answer
2. asked by Amy
3. 1,945 views
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.140 M HClO(aq) with 0.140 M KOH(aq).HClO is a
1. 1 answer
2. asked by Emma
3. 1,882 views
A quarter has a diameter of approximately 24 millimeters. What is the area of the quarter?Did I work this right? A= 3.14 (12)
1. 3 answers
2. asked by Daniel
3. 1,842 views
Calculate the heat of combustion of candle wax in kJ/mole. The standard heat of formation (∆Hf ) of candle wax (C20H42) is
1. 1 answer
2. asked by emma
3. 1,836 views
Acetaldehyde, CH3CHO, will decompose into methane and carbon monoxide according toCH3CHO (g) -> CH4 (g) + CO (g) At 450C the
1. 2 answers
2. asked by Anonymous
3. 1,784 views
the average 1-ounce chocolate chip cookie contains 110 calories. A random sample of 15 different brands of 1-ounce chocolate
1. 2 answers
2. asked by Paula
3. 1,721 views
Suppose that you did not completely convert the hydrate to dehydrate compound. Explain how would this affect the calculated
1. 2 answers
2. asked by mitchel
3. 1,649 views
An object of mass 20kg slides down an inclined plane at an angle of 30 degree to the horizontal. The coefficient of static
1. 3 answers
2. asked by Sbjjayo
3. 1,582 views
A rescue cable attached to a helicopter weighs 2 lb/ft. A 190 lb man grabs the end of the rope and is pulled from the ocean into
1. 2 answers
2. asked by Carl
3. 1,576 views
Two identical positive charges exert a repulsive force of 7.0 10-9 N when separated by a distance of 3.2 10-10 m. Calculate the
1. 2 answers
2. asked by Mat
3. 1,536 views
1.A decline in the number of U.S. manufacturing jobs was in part the result of *globalization. biotechnology. entrepreneurs.
1. 3 answers
2. asked by james
3. 1,514 views
Find the slope of a line that is perpendicular to the line containing the points (–2, –1) and (2, –3).can you tell me how
1. 2 answers
2. asked by Mr.Brain
3. 1,451 views
I'd like to know if I answered these correctly.1.Both the Whitman poem and the Dickinson poem are examples of poetry that? A.
1. 6 answers
2. asked by Eri
3. 1,428 views
The height of a projectile launched into the air is given by h (t)= -16t^2 + 48t + 60, where h is the height of the projectile
1. 2 answers
2. asked by Brandy
3. 1,353 views
The manager of a local gym has determined that the length of time members spend at the gym is a normally distributed variable
1. 3 answers
2. asked by mk.
3. 1,299 views
In a gas mixture, the partial pressures are argon 393 mm Hg, neon 73 mm Hg, and nitrogen 119 mm Hg. What is the total pressure
1. 1 answer
2. asked by Kendyl
3. 1,274 views
If X = 3 units, Y = 5 units, and Z = 11 units, then what is the volume of the rectangular prism shown above?A. 206 cubic units
1. 2 answers
2. asked by Damani
3. 1,266 views
How much ice (in grams) would have to melt to lower the temperature of 53.4g of water from 65 C to 0C?I know there are more than
1. 4 answers
2. asked by Kim
3. 1,261 views
To avoid speaking in monotone, a strategy to use can include:A. changing pitch and tone of voice. B. voice inflection. C.
1. 1 answer
2. asked by Amy
3. 1,256 views
If X = 3 units, Y = 5 units, and Z = 11 units, then what is the volume of the rectangular prism shown above?
1. 3 answers
2. asked by Damani
3. 1,238 views
1. Verbal communication refers mainly to:A. vocal quality. B. pitch. C. use of words. D. tone. is it C 2. Nonverbal
1. 1 answer
2. asked by Amy
3. 1,201 views
A large storage tank, open to the atmosphereat the top and ﬁlled with water, develops a small hole in its side at a point 18 m
1. 0 answers
2. asked by Anonymous
3. 1,192 views
The percentage of physicians who are women is 27.9% in a survey of physicians employed by a large university health system, 45
1. 0 answers
2. asked by Paula
3. 1,186 views
Assume a family is planning to have three children.A. What is is the probablity of a family having 2 girls. B. The probablity of
1. 1 answer
2. asked by Angela
3. 1,179 views
On the moon, the acceleration due to gravity is -1.6 meters per second per second. A stone is dropped from a cliff on the moon
1. 2 answers
2. asked by Simon
3. 1,162 views
use the van der waals equation to calculate the pressure of 4.00 mol of H20 at 471K in a 4.60-L vessel. how do you solve?
1. 1 answer
2. asked by Katherine
3. 1,144 views
Choose which sentence is correctly punctuated.A."What kind of fruit," asked Betsy, "bears its seed on the outside"? B."What kind
1. 7 answers
2. asked by Cassie
3. 1,127 views
A company produces batteries whose lifetimes are normally distributed with a mean of 100 hours. It is known that 90% of the
1. 0 answers
2. asked by Ravi
3. 1,125 views
the Old Farmer’s Almanac stated that the average consumption of water per person per day was 123 gallons. To test the
1. 0 answers
2. asked by Paula
3. 1,104 views
In a test run, a new train travels along a straight-line track. Data obtained from the speedometer indicate that the velocity of
1. 3 answers
2. asked by Mimi
3. 1,094 views
Use the limit process to find the area of the region between the graph of the function and the x-axis over the indicated
1. 0 answers
2. asked by Simon
3. 1,071 views
Which of the following graphs of exponential functions corresponds to a geometric sequence with a 1st term of 6 and a ratio of
1. 3 answers
2. asked by Tifini
3. 1,068 views
A survey by Men’s Health magazine stated that 14% of men said they used exercise to reduce stress. Use a = 0.10. a random
1. 0 answers
2. asked by Paula
3. 1,024 views
Calculate the molar solubility of MgCO3 in a solution that already contains 1.7×10−3 M sodium carbonate.MgCO3 Ksp = 6.82 x
1. 1 answer
2. asked by Chloe
3. 1,024 views
Glass A has a composition of 90% SiO2 - 10% Na2O. Glass B has a composition of 99% SiO2 - 1% Na2O. Both glasses are cooled to
1. 2 answers
2. asked by Anonymous
3. 1,014 views
Four charges are placed at the four corners of a square of side 15 cm.The charges on the upper left and right corners are +3 uC
1. 0 answers
2. asked by daryl
3. 1,012 views
Math Problem: Find the area of a circle that has a radius of 14 feet. Round your answer to the nearest hundredth.Would someone
1. 1 answer
2. asked by John
3. 1,006 views
an object has a potential energy of 100 J when it is 10 m above the ground. if it were to fall without friction what would its
1. 1 answer
2. asked by desiree
3. 1,000 views
One environment or human factor that causes ill health or accidents in my community or any other community within South Africa.
1. 1 answer
2. asked by Zanele
3. 996 views
The current circulation of a particular magazine is 3,000 copies per week. The editor projects a growth rate ofg(t) = 4 + 5t^2/3
1. 1 answer
2. asked by Karen
3. 991 views
a model for a proposed computer chip measures 3/4 inch by 1 1/4 help me find the area
1. 3 answers
2. asked by tanyelle
3. 990 views
Estimate the percentage savings in the fuel bill if the thermostat is set back from 68 degrees F to 50 degrees F for 12 hours of
1. 1 answer
2. asked by Samuel
3. 961 views
hinew to economics, and struggling with some of its concepts. got this posed as a homework question, and i have to admit stumped
1. 0 answers
2. asked by john
3. 953 views
A current I=2.3 A flows around a continuous path that consists of portions of two concentric circles of radii a and a/2,
1. 0 answers
2. asked by s
3. 934 views
11. An object with a charge of +6.0 µC is 0.30 m from a second object and experiences an attractive force of 1.80 N. What is
1. 1 answer
2. asked by Ginger
3. 933 views
how can i address water pollution
1. 1 answer
2. asked by thandeka
3. 928 views
To avoid speaking in monotone, a strategy to use can include:A. changing pitch and tone of voice. B. voice inflection. C.
1. 6 answers
2. asked by Martha
3. 908 views
ic LogicWrite two arguments in English, one in the form of modus ponens and one in the form of modus tollens. Then, write the
1. 0 answers
2. asked by yolanda
3. 882 views
A spherical shell of radius R carries a uniform surface charge density (charge per unit area) \sigma. The center of the sphere
1. 9 answers
2. asked by Phy
3. 862 views
Frank and Mary are buying a home for $187,500. Their Good Faith Estimate indicates they will be paying $2200 in closing costs
1. 0 answers
2. asked by tmouery
3. 857 views
At 25 °C only 0.0390 mol of the generic salt AB3 is soluble in 1.00 L of water. What is the Ksp of the salt at 25 °C?
1. 1 answer
2. asked by madeline
3. 856 views
A block of mass 8.50 is sliding along a smooth surface when it encounters a 0.800 long region of roughness with =0.310. The
1. 1 answer
2. asked by lauren
3. 831 views
At the end of each year a self-employed person deposits $1,500 in a retirement account that earns 10 percent annually. a) How
1. 0 answers
2. asked by carolyn
3. 826 views
In a test run, a new train travels along a straight-line track. Data obtained from the speedometer indicate that the velocity of
1. 1 answer
2. asked by Mimi
3. 808 views
a bullet of mass 0.015kg strikes ballistic pendulum of mass 2.0kg .the center of mass of the pendulum rises a vertical distance
1. 1 answer
2. asked by lonia
3. 798 views
A school psychologist reports that the mean number of hours the students at this school sleep each night is 8 hours. The
1. 1 answer
2. asked by Anonymous
3. 771 views
13.The trouble with being a(n) (underscore pessimist) is that you are so taken up with what is going wrong that you are unaware
1. 1 answer
2. asked by Jerald
3. 760 views
If the probability of an event happening is 2/5, then the probability of the event not happening is 3/5? This is False. The
1. 1 answer
2. asked by rick
3. 745 views
Ethanol (C2H5OH) has been produced since antiquity by the fermentation of fruits and vegetables. Given the following data, if
1. 1 answer
2. asked by Johnny
3. 737 views
Calculate the density of atoms in (001) in lithium. Express answer in atoms/cm.
1. 10 answers
2. asked by anonyms
3. 725 views
I have these words left beacon celestial detract precaution retaliate sham uncouth wholesome wistful2.Though many people doubted
1. 1 answer
2. asked by Jerald
3. 720 views
The Young’s modulus for steel is 20.7*1010 N/m2. How much will a 2.5 mm diameter wire 12 cm long, be strained when it supports
1. 5 answers
2. asked by Anonymous
3. 719 views
An independent-measures research study computes three treatment conditions with a sample of n=10 in each conditions. The sample
1. 1 answer
2. asked by kisha
3. 716 views
What is the rectangular form of the complex number z^4 if z = 2cis 60°?
1. 0 answers
2. asked by Chris
3. 712 views
1.The youth center that the charity organized was like a (precaution beacon) to many young people desperately needing help and
1. 3 answers
2. asked by Jerald
3. 708 views
Can you please help me?I think the first question I posted the answer is 3G+30
1. 9 answers
2. asked by Brooke
3. 695 views
1.Which of the following is an example of metaphor? (1 point) an overwhelming wave of embarrassment as harmless as a newborn
1. 5 answers
2. asked by Delilah
3. 673 views
A 2.70 m long pole is balanced vertically on its tip. What will be the speed (in meters/second) of the tip of the pole just
1. 1 answer
2. asked by Nicole
3. 669 views
two charges originally separated by 10cm are moved further apart untill the force between them has decreased by a factor of 10.
1. 0 answers
2. asked by radiant
3. 643 views
A paper cone is to be formed by starting with a disk of radius 9cm, cutting out a circular sector, and gluing the new edges
1. 1 answer
2. asked by lisa
3. 641 views
Given the thermochemical equation below, calculate the amount of energy released when 250. g of NaOH (molar mass = 40.0 g/mol)
1. 1 answer
2. asked by sarah
3. 634 views
What is the relationship between revision and content?A. Correct content makes revision unnecessary. B. Revision links content
1. 0 answers
2. asked by Ms. Sue Please Help (Sandy)
3. 629 views
A Bainbridge mass spectrometer is shown in the figure. A charged particle with mass m, charge |q|=3.2 ×10−19C and speed v=3
1. 1 answer
2. asked by sat
3. 626 views
(a)what is the magnitude of the gravitational force of the earth on a surveillance satellite of mass 1040kg that is in a grazing
1. 2 answers
2. asked by lonia
3. 618 views
A pilot flying at an altitude of 3500 feet sees a baseball field at an angle of depression on 35 degrees. what is the pilot's
1. 2 answers
2. asked by Omar
3. 610 views
Which functions of x and y in terms of time t can be derived from this rectangular equation? (x^2/4)+y^2=1A. x = 2sin t, y =
1. 1 answer
2. asked by Chris
3. 608 views
Lithium metal is a highly reactive metal that oxidizes instantly in water or air. Given the data below, calculate the energy
1. 1 answer
2. asked by Johnny
3. 603 views
A specimen of LaNi5 containing hydrogen is placed in a vacuum furnace. After 1 hour, at what depth from the surface of the
1. 1 answer
2. asked by Anonymous
3. 597 views
N-type silicon (Si) has been produced by doping with phosphorus (P). The charge-carrier population based on electrical
1. 3 answers
2. asked by Anonymous
3. 589 views
Helen determined she walks about 1,800 steps per 4/5 of a mile. How many steps did she take if she walked 3 miles
1. 1 answer
2. asked by sese
3. 587 views
Why is the ability to draw conclusions important in research?A. To discover the effect of the topic B. To enable further
1. 2 answers
2. asked by Sandy
3. 578 views
The perimeter of rectangle Z is equal to its area.Rectangle Y has the same perimeter as rectangle Z.The length of rectangle Y is
1. 1 answer
2. asked by Iveth
3. 570 views
Three moles of nitrogen gas, N2, at 26.8◦C are contained in a 35.8 L cylinder. Find the pressure the gas exerts on the
1. 0 answers
2. asked by Anonymous
3. 568 views
Explain "the larger the denominator the smaller the fraction?"
1. 1 answer
2. asked by Tina
3. 568 views
Two voltmeters, Vright and Vleft, each with an internal resistance of 106 Ω are connected through wires of negligible
1. 0 answers
2. asked by s
3. 565 views
a circle is formed with a center (-3,5) and a radius.of 4 write the circle as a pair of parametric equations. then show how you
1. 1 answer
2. asked by gggggg
3. 561 views
The energy of vacancy formation in palladium (Pd) is 1.5 eV. At 888C there is one vacancy for every million (106) atom sites.
1. 4 answers
2. asked by ssss
3. 559 views
CAN YOU PLEASE HELP ME WITH THE ANALYSIS OF THE POEM HIROSHIMA BY ANGELA CLIFTON
1. 2 answers
2. asked by MARANQA
3. 558 views
how to prepare 40% of Nitric acid from 70% of the Nitric acid solution
1. 1 answer
2. asked by meena
3. 557 views

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