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Questions Asked on February 23, 2012

Suppose you have a large supply of sponge balls with weights in the centre, so that when the balls are piled on each other the
1. 2 answers
2. asked by girl
3. 4,980 views
Find the lateral area of a regular hexagonal pyramid with base edge of 10 in and lateral edge of 13 in.
1. 2 answers
2. asked by Piggy
3. 3,932 views
Laser Pointers emit light waves whose wavelength is 670 nm. What is the frequency for this light?
1. 1 answer
2. asked by Charles
3. 3,143 views
Marion is observing the launch of a space shuttle from the command center. When she first sees the shuttle, the angle of
1. 3 answers
2. asked by Clare
3. 2,981 views
In basic solution, H2O2 oxidizes Cr+3 to Cro4^-2 and is reduced to OH-. What is the balanced equation?
1. 1 answer
2. asked by Cynthia
3. 2,943 views
What mass of oxalic acid dihydrate , H2C2O4•2H2O, is required to prepare 220.0 ml of a 1.28 M solution of oxalic acid ?
1. 2 answers
2. asked by Cynthia
3. 2,937 views
Speed of Sound. Sound travels through air as a result of collisions between the molecules in the air. The temperature of the air
1. 3 answers
2. asked by sarah
3. 2,752 views
rhombus ABCD has diagonals that intersect at E. DF is drawn perpendicular to DC and AD at D. With AB = 10cm, <BCD = 60 degrees
1. 2 answers
2. asked by Anonymous
3. 2,295 views
HELP PLEASEthe volume of a sample of oxygen is 200.0ml when the pressure is 3.00atm and the temp is 37.0 C. What is the new temp
1. 2 answers
2. asked by Kalei
3. 2,230 views
The ratio of zinc and copper in an alloy is 7:9. if the weight of copper in the alloy is 11.7 kg, find the weight of zinc in
1. 3 answers
2. asked by swagnik
3. 2,216 views
Two point charges, q1 and q2, are placed 0.30 m apart on the x-axis, as shown in the figure above. Charge q1 has a value of
1. 2 answers
2. asked by Kayberlynn
3. 2,145 views
How many capsules , each containing 250mg, are needed to provide 50mg/kg/day for 10 days for a person weighing 176 lbs?
1. 1 answer
2. asked by Vicki
3. 2,108 views
A passenger in a helicopter traveling upwards at 20 m/s accidentally drops a package out the window. If it takes 15 seconds to
1. 2 answers
2. asked by Anonymous
3. 2,087 views
For the given function, compute the missing values in the following table.f(x) = 8x i got the negatives wrong, but I know how to
1. 2 answers
2. asked by Ann
3. 2,018 views
Class scores: Write a program that calculates the total grade for N classroom exercises as a percentage. The user should input
1. 1 answer
2. asked by Abby
3. 1,916 views
1.) values of f(t) are given in the following table:t 0 2 4 6 8 10 f(t) 137 112 88 68 49 34 a. Does this function appear to have
1. 6 answers
2. asked by JJ
3. 1,864 views
A force of 2 kg weight acts on a body of mass 4.9 kg .Find the acceleration produced.
1. 1 answer
2. asked by anurag
3. 1,781 views
A student must prepare 2.00 L of 0.100 M Na2CO3 (106 g/mol) Which is the best procedure for preparing this solution ?
1. 1 answer
2. asked by Cynthia
3. 1,616 views
What is the net ionic equation for the reaction that occures between nitrouse acid and strontium hydroxide ?
1. 1 answer
2. asked by Cynthia
3. 1,511 views
sin(x) = 8/17 and 90 degrees < x < 180 degrees then find cos2(x)
1. 1 answer
2. asked by Harley
3. 1,503 views
A commuter airplane starts from an airport and takes the route shown in the figure below. The plane first flies to city A
1. 1 answer
2. asked by micheal
3. 1,474 views
Evaluate the integral S x/(sqrt(3x-1))dxUse U-Substitution method.
1. 2 answers
2. asked by John
3. 1,395 views
Could you plz help me to check if these two essays have thesis and thesis development?ESSAY 1:There has been much discussion
1. 2 answers
2. asked by Tianna
3. 1,393 views
How many liters of chlorine gas can be produced when 0.98 L of HCl react with excess O2 at STP?
1. 1 answer
2. asked by Billy
3. 1,391 views
Umberto's mother expects an increase of 5% in her current salary of $36,000. What would her new salary be?
1. 1 answer
2. asked by Merid
3. 1,382 views
Hi is my thesis statement clear in the following paragraph, if nto how can i make it clearer. Basically I want to show that
1. 1 answer
2. asked by jon
3. 1,339 views
The following reaction represents the decomposition of hydrogen peroxide:Balanced equation: 2H2O2 -> O2 + 2H2O How many moles of
1. 3 answers
2. asked by Emma
3. 1,325 views
Biomedical measurements show that the arms and hands together typically make up 13.0% of a person's mass, while the legs and
1. 0 answers
2. asked by john
3. 1,273 views
Common ion effect;At some other temperature, a solid sample of Ca(OH)2 is shaken with 0.0100?Common ion effect;At some other
1. 1 answer
2. asked by Mahi
3. 1,271 views
There are 37 students in an algebra class. there are 9 more girls than boys. how many boys and how many girls are in the class?
1. 1 answer
2. asked by Jennifer
3. 1,266 views
A 2.00kg block is pushed against a spring with force constant k=400N(m^-1), compressing it 0.180m. The block is then released
1. 1 answer
2. asked by taylor
3. 1,249 views
The Sentosa High School's telephone number is an eight digit number. The sum of the two numbers formed from the first three
1. 4 answers
2. asked by Surya
3. 1,247 views
The system of checks and balances allows the Supreme Court toA. veto legislation passed in Congress. B. nominate candidates for
1. 1 answer
2. asked by lalt
3. 1,234 views
a student misses 2 days of school out of 25 days. what is the probability that the student will be absent on the 26th day of
1. 1 answer
2. asked by faith
3. 1,222 views
If 9x8=72, then 72 divided by 8 is what number? Explain how you know without actually finding the quotient?
1. 2 answers
2. asked by rosemary
3. 1,211 views
Why are gamma rays generally not shown when writing nuclear equations ?
1. 1 answer
2. asked by TJ
3. 1,208 views
build equationOf the 15 players on the boys' soccer team, 2/5 are 8th graders. On the girls' soccer team,1/3 of 18 are 8th
1. 1 answer
2. asked by Anonymous
3. 1,201 views
A 30.00-mL sample of weak acid is titrated with 0.0167 M NaOH. At the endpoint , it is found the 40.35 mL of titrant was used.
1. 1 answer
2. asked by Cynthia
3. 1,188 views
who is considered the primary author of the declaration of independence
1. 3 answers
2. asked by sammie doodles :-)
3. 1,173 views
A 0.168kg hockey puck slides at 11.4m/s. what is the work needed to stop the puck?
1. 1 answer
2. asked by Sheetal
3. 1,161 views
A wooden raft 3 m long x 2 m wide x 20 cm thick floats on a freshwater lake. A) Determine the buoyant force? B) If the raft
1. 2 answers
2. asked by Kendra
3. 1,158 views
Complete the following table for the firm below which is selling its product in a perfectly competitive market and hiring labor
1. 0 answers
2. asked by Anonymous
3. 1,145 views
The table shows the total number of emails that the Wright family received this morningMember Mr.Wright Mrs.Wright Cole Trinity
1. 0 answers
2. asked by J.C.
3. 1,136 views
A man pushes on a piano with mass 200 {\rm kg} so that it slides at constant velocity down a ramp that is inclined at 10.5^\circ
1. 0 answers
2. asked by lkn
3. 1,115 views
A club with 35 members is to select five officers (president, vice president, secretary, treasurer, and historian). In how many
1. 1 answer
2. asked by Matt
3. 1,093 views
A passenger in a helicopter traveling upwards at 20 m/s accidentally drops a package out the window. If it takes 15 seconds to
1. 1 answer
2. asked by Anonymous
3. 1,091 views
The concentration of Pb+2 in a sample of wastewater is to be determined by using gravimetric analysis. To a 100.0-mL sample of
1. 1 answer
2. asked by Cynthia
3. 1,084 views
Microfracture knee surgery has a 75% chance of success on patients with degenerative knees. The surgery is performed on 5
1. 0 answers
2. asked by Anonymous
3. 1,060 views
Ancient square root algorithm. The Babylonian algorithm to compute the square root of a number n is as follows:1. Make a guess
1. 1 answer
2. asked by aymee
3. 1,048 views
How should this be written to correct the dangling modifier?The cost of production can be reduced by purchasing an ultra-pure
1. 1 answer
2. asked by Mariah
3. 1,044 views
1. What country is due south of Egypt? Sudan2. Is Phnom Penh or Hanoi the capital of Vietnam? Hanoi 3. Besides the Soviet Union,
1. 1 answer
2. asked by Reed
3. 1,044 views
Why is only one egg produced during oogenesis while four sperm are produced during the parallel process of spermatogenesis?
1. 1 answer
2. asked by Rebecca
3. 1,038 views
Display the final answer in correct scientific notation and show correct number of significant figures in the final answer:6.022
1. 3 answers
2. asked by Susan
3. 1,035 views
Tanya had $1.19 in coins. None of the coins were dollars or 50-cent pieces. Josie asked Tanya for change for a dollar, but she
1. 1 answer
2. asked by Elaina
3. 1,027 views
Can you tell me if everything is correct?Final Grammar Test Part I: True or False 1. The following word group is a FRAGMENT:
1. 3 answers
2. asked by Al
3. 1,023 views
Consider a spring and block systemk= 18 N/m x initial = o m x final = 0.08m Useing Hooke's law to calculate the force needed to
1. 1 answer
2. asked by GRISSELL
3. 1,003 views
What is the rotational speed of the minute hand on a clock?Convert from rad/s to rev/s
1. 1 answer
2. asked by brett
3. 997 views
find the percent of decrease. round to the nearest tenth if necessary from 49 cm to 34 cm
1. 3 answers
2. asked by jasmine
3. 995 views
I need help on how to write a compare and contrast essay on the topic of pre-school
1. 1 answer
2. asked by Anonymous
3. 989 views
A wheel 1 meter in diameter is rotating at 100 revolutions per minute without slipping along a level stretch of road and passes
1. 0 answers
2. asked by Maria
3. 982 views
B. Suppose there are two goods, Cloth and Food, and two factors of production, labourand capital. Suppose that the production
1. 1 answer
2. asked by John
3. 976 views
what is the cube root of -1/64
1. 1 answer
2. asked by Lisa
3. 976 views
Compare and Contrast Essay for Preschool Pre-school (Pre-K) and Kindergarten, on an equal level; when it comes to the
1. 1 answer
2. asked by Anonymous
3. 970 views
An atmospheric scientist interested in how NO is converted into NO2 in urban atmospheres carries out two experiments to measure
1. 7 answers
2. asked by help
3. 969 views
what is the answer to 9*1000 + 1890
1. 1 answer
2. asked by vick
3. 966 views
A meat market has ground beef that is 40% fat and extra lean ground beef that is 15% fat. How many pounds of each(ground beef
1. 1 answer
2. asked by mercy
3. 952 views
Suppose (x^2)*(e^(-2y))= ln(xy)Find dy/dx by implicit differentiation.
1. 1 answer
2. asked by Bob
3. 944 views
Cliff and Will are carrying a uniform 2.0m board of mass 69kg. Will is supporting the board at the end while cliff is 0.6m from
1. 1 answer
2. asked by brett
3. 943 views
sin2x+cosx=0 , [-180,180)= 2sinxcosx+cosx=0 = cosx(2sinx+1)=0 cosx=0 x1=cos^-1(0) x1=90 x2=360-90 x2=270 270 doesn't fit in
1. 1 answer
2. asked by Anonymous
3. 938 views
a small sphere whose m mass is 1.0 mg carries a charge q of 2.0*10^(-8)C. It hangs from a silk thread that makes an angle of 30d
1. 1 answer
2. asked by Jc
3. 934 views
A hot-water heater is operated by solar power. If the solar collector has an area of 5.8 m2 and the power delivered by sunlight
1. 1 answer
2. asked by halley
3. 934 views
We're reading "The World is Too Much with Us by Wordsworth. We have some questions to interpret-I understand about Wordsworth
1. 5 answers
2. asked by Thomas S.
3. 922 views
i post my biology questions here today and few days ago no teacher reply. there not any biology tutor on here?
1. 3 answers
2. asked by Shreya
3. 912 views
Find the lateral area of a right triangular prism with an equilateralbase length of 5cm and height of 10cm.
1. 1 answer
2. asked by Piggy
3. 911 views
A thin condicting spherical shell of outer radius 20cm carries a charge of +3 muC. Sketch (a) magnitude of the electric field E
1. 0 answers
2. asked by Jc
3. 909 views
An object moves in a straight line. Its velocity, in m/s, at time t is v(t)=4t^2/(4+t^3), t>(greater or equal)0. Determine the
1. 1 answer
2. asked by Jake
3. 907 views
How many liters of chlorine gas can be produced when 0.98 L of HCl react with excess O2 at STP?
1. 1 answer
2. asked by Billy
3. 895 views
A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 290 kg) that is also at rest. The
1. 1 answer
2. asked by Elizabeth
3. 890 views
What is the new pressure of 150ml of a gas that is compressed to 50ml, when the orginal pressure was 3.0atm?
1. 2 answers
2. asked by Micki
3. 877 views
how do i write 9.8 multiplied by 10 to the forth power into standard notation
1. 1 answer
2. asked by ikiya
3. 871 views
Explain the rise of the republicans and the international challenges faced following world war I?
1. 0 answers
2. asked by Sonja
3. 858 views
The base of a pyramid is a square. The perimeter of the base is 20ft, and the surface area of the pyramid is 65ft^2. Find the
1. 3 answers
2. asked by Piggy
3. 848 views
a *blank* is a tool that measure speed in an vehicle.
1. 1 answer
2. asked by Bella
3. 835 views
Consider a point charge with q= 1.5*10^-8 C. (a) what is the radius of an equpotential surface having a potential of 30 V?(b)Are
1. 0 answers
2. asked by Jc
3. 823 views
Biomedical measurements show that the arms and hands together typically make up 13.0% of a person's mass, while the legs and
1. 0 answers
2. asked by john
3. 819 views
construct an equilateral triangle ABC in which altitude drawn from opposite vertex is 3.5 cm.Also construct a triangle APR
1. 1 answer
2. asked by upasna
3. 819 views
The surface area to volume ratio of a cube is 2 to 5. Find the length of each side.
1. 2 answers
2. asked by Piggy
3. 811 views
Consider an ideal pulley system. Pull one end of a rope downward by 1 meter with 50 N of force, and you'll lift a 200-N load a
1. 1 answer
2. asked by britches
3. 809 views
George has a bag of marbles. Inside the bag are 5 red marbles, 3 red marbles, and 2 blue marbles. He draws out two marbles in a
1. 1 answer
2. asked by Piggy
3. 799 views
Karen took 1hour 45mins to drive from Town A to Town B. She took another 25 mins drive from Town B to Town C. After that, she
1. 0 answers
2. asked by billygoatman
3. 795 views
Umberto's mother expects an increase 5% increase in her current annual salary of $36,000. What would her new annual salary be?
1. 3 answers
2. asked by Merid
3. 795 views
a car starts from a stop. at the end of 30 seconds its speed is 20 meters per second. what is the acceleration of the car?
1. 1 answer
2. asked by morgan
3. 794 views
a file with the extension of .bmp is an audio file? true or false?I say true
1. 2 answers
2. asked by Elizabeth
3. 793 views
A Chinook (King) salmon (Genus Oncorynchus) can jump out of water with a speed of 5.95 m/s. (See Problem 4.9, page 111 for an
1. 0 answers
2. asked by micheal
3. 790 views
When only the front wheels of an automobile are on a platform scale, the scale balances at 7.8 kN; when only the rear wheels are
1. 1 answer
2. asked by sara
3. 788 views
A shipping clerk wishes to determine the weights of each of the 4 boxes. Each box weighs a different integer amount less than 70
1. 1 answer
2. asked by Jackie
3. 768 views
the charges an coodinates of two points charges located in x-y palne are : q1=+3*10^-6 C ; x=+3.5 cm . y=+0,5 cm and q2=-4*10^-6
1. 0 answers
2. asked by Jc
3. 752 views
Cells are specialized in structure to match their function. Compare cell specialization in gametes with other examples of cell
1. 1 answer
2. asked by joe
3. 750 views
5. An object that has kinetic energy must have ____________________.A) momentum. B) acceleration. C) a force applied to it. D)
1. 0 answers
2. asked by britches
3. 746 views
Balance this equation:I2+HNO3 = HIO3+NO2+H2O
1. 1 answer
2. asked by Hannah
3. 742 views

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