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2011
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Questions Asked on May 8, 2011

write the balanced equation for the ionization of the weak base pyridine, C5H5N, in water
1. 7 answers
2. asked by Kristin
3. 35,773 views
Which angle between 0° and 360° has the same cosine as the angle 58°?give your answer as an integer. how do i do this please?
1. 9 answers
2. asked by susan
3. 20,088 views
A 3.1-kilogram gun initially at rest is free to move. When a 0.015-kilogram bullet leaves the gun with a speed of 500. meters
1. 9 answers
2. asked by ashley --- HELP PLEASEE!!!
3. 16,446 views
A child, starting from rest at the top of aplayground slide, reaches a speed of 7.0 meters per second at the bottom of the
1. 2 answers
2. asked by ashley --- HELP PLEASEE!!!
3. 7,256 views
A 15.0-kilogram mass is moving at 7.50 meters per second on a horizontal, frictionless surface. What is thetotal work that must
1. 3 answers
2. asked by ashley --- HELP PLEASEE!!!
3. 6,619 views
What is the gradient of a line that has an angle of inclination of 75°?Enter the answer, rounded to 4 significant figures in
1. 3 answers
2. asked by elizabeth
3. 5,700 views
What is the probability oi rolling a total of 7 in two rolls of a standard die if you get an even number of the first roll?Could
1. 3 answers
2. asked by Ed
3. 5,584 views
what is the sp hybrid orbitals for carbon molecules in CH3-C=C-CH2OH?
1. 1 answer
2. asked by Kimmy
3. 4,875 views
A small electric motor is used to lift a0.50-kilogram mass at constant speed. If the mass is lifted a vertical distance of 1.5
1. 2 answers
2. asked by ashley --- HELP PLEASEE!!!
3. 4,760 views
H2C=C=CH2 molecule is linear, what are they hybridization states of the carbon atoms? draw diagrams to show sigma and pi bonds.
1. 1 answer
2. asked by George
3. 4,599 views
SiH3-planar or pyramidal geometric shape?
1. 1 answer
2. asked by George
3. 3,980 views
A student throws a baseball at a large gong 73 m away and hears the sound of the gong 1.7744 s later. The speed of sound in air
1. 1 answer
2. asked by Leslie
3. 3,791 views
The bear population increases at a rate of 2% per year. There are 1573 bear this year. Write a function that models the bear
1. 3 answers
2. asked by Anonymous
3. 3,052 views
What total mass must be converted into energyto produce a gamma photon with an energy of 1.03 × 10^–13 joule
1. 2 answers
2. asked by ashley --- HELP PLEASEE!!!
3. 2,766 views
Use the following reactions to arrange the elements A, B, C, and D in order of their redox activity, from greatest to least.2 A
1. 2 answers
2. asked by Rebekah
3. 2,608 views
Which of the following ions possess a dipole moment: ClF2+, ClF2-, IF2+, or IF4-?Please Help! :)
1. 1 answer
2. asked by Anita
3. 2,232 views
use a half angle formula to find the exact value of cos 75 degree
1. 1 answer
2. asked by lan
3. 2,174 views
Had to correct sentences so the parallel ideas are expressed1. Is it true that Superman could leap tall buildings, run faster
1. 12 answers
2. asked by Amor
3. 2,156 views
Find the exact values of the other trig functions of theta given sec theta=7 and sin theta is less than 0.
1. 2 answers
2. asked by Nick
3. 2,085 views
Which of the following ions possess a dipole moment: ClF2+, ClF2-, IF2+, or IF4-?
1. 1 answer
2. asked by Anita
3. 1,983 views
A mass 5kg is whirled in a horizontal circle @ 1 end of a string 50cm long,the other end being fixed. If the string when hanging
1. 1 answer
2. asked by Fate
3. 1,976 views
Calipers were set and verified at 5 mm.Question: what are all the verbs in the sentence?
1. 7 answers
2. asked by Leslie
3. 1,966 views
A triangle has sides 12 ft, 14 ft, and 20 feet. The smallest side of another similar triangle measures 8 ft. What is the
1. 1 answer
2. asked by Mary
3. 1,692 views
A flywheel rotates with an angular speed of 26 rev/s. As it is brought to rest with a constant acceleration, it turns 55 rev.Wha
1. 1 answer
2. asked by Maria
3. 1,682 views
The mass of a particular substance is known to grow exponentially at a rate of 0.5% per hour. Its initial mass was 25 grams and,
1. 2 answers
2. asked by Grace
3. 1,660 views
Need help on which formulas I use to solve problems?A coil of wire with 200 circular turns of radius 3.00 cm is in a uniform
1. 2 answers
2. asked by physicsclass
3. 1,505 views
Calculate the enthalpy of reaction from the standard enthalpies of formation of the reactant and product molecules.2C2H6+7O2-->4
1. 2 answers
2. asked by Betsie
3. 1,500 views
questions2) List the facts that have the most bearing on the decision. 4)Explain what each affected person would want you to do
1. 2 answers
2. asked by frank
3. 1,489 views
In order to determine the amount of liquid a spherical tank will hold, would you need to use volume or surface area?
1. 1 answer
2. asked by Stacey
3. 1,387 views
In the year 2000 there were 350 mobile phones users living in the small town of Phoneville. Since 2000 the number of residents
1. 2 answers
2. asked by Stephanie
3. 1,294 views
A satellite is placed between the Earth and the Moon, along a straight line that connects their centers of mass. The satellite
1. 2 answers
2. asked by Roberto
3. 1,269 views
A man jogs along at 1.2 m/s. His dog, playing 36 m behind him, waits for 5 s, then takes off after him at 3.1 m/s.How far apart
1. 2 answers
2. asked by Laura
3. 1,233 views
How many grams of magnesium oxide are produced when 40 grams of oxygen react with magnesium
1. 1 answer
2. asked by jordan
3. 1,218 views
The heights in centimetres of men in a sample selected at random may be modelled by a normal distribution with mean 180.5 and
1. 2 answers
2. asked by olek
3. 1,204 views
The spout heights in the container in the figure are 15 cm, 30 cm, 45 cm, and 60 cm. The water level is maintained at a 68 cm
1. 0 answers
2. asked by Bret
3. 1,169 views
Find a numerical value of one trigonometric function of x if secxcotx=4A.cscx=1/4 b.secx=4 c.secx=1/4 d.cscx=4
1. 1 answer
2. asked by lan
3. 1,164 views
SPARTAN:Using the bond lengths recorded in Table II determine bond order and the major resonance structures of the following: A.
1. 3 answers
2. asked by Sarah
3. 1,115 views
5 ways in which the HIV/AIDS problem impacts on the community
1. 1 answer
2. asked by dolley mojapelo
3. 1,114 views
Solar heating takes advantage of solar collectors such as the type shown in the figure . During daylight hours, the average
1. 0 answers
2. asked by Alice
3. 1,098 views
a physician provides an office consultation for a new patient. the history and examination levels are comprehensive and the
1. 1 answer
2. asked by billy
3. 1,098 views
High Knob Mountain is 4044 ft. high.What is this distance in meters?a. 6470 m b. 102.8 m c. 1233 m d. 4000 m I did it like this:
1. 3 answers
2. asked by MaS
3. 1,091 views
The velocity of the transverse waves producedby an earthquake is 5.08 km/s, while that of the longitudinal waves is 8.3312 km/s.
1. 2 answers
2. asked by Laura
3. 1,086 views
Hercules Films is deciding on the price of the video release of its film Bride of the Son of Frankenstein. Marketing estimates
1. 0 answers
2. asked by Angela
3. 1,086 views
I know that 'you' and 'I' are pronouns but are words like 'you're' and 'I'm still classed as perosnal pronouns?thanks
1. 1 answer
2. asked by Kaley
3. 1,080 views
Writing process teaching strategies used with first language learners are:a. the same for first and second language writers b.
1. 1 answer
2. asked by rj
3. 1,053 views
Which of the following would you want to evaluate for a middle school student?a. background knowledge b. word recognition and
1. 0 answers
2. asked by rj
3. 1,031 views
In a dramatic lecture demonstration, a physics professor blows hard across the top of a copper penny that is at rest on a level
1. 1 answer
2. asked by Chao
3. 1,024 views
An actress wears a blue dress. How could you use spotlights to make the dress appear black?I think you could use black spots. Is
1. 1 answer
2. asked by abster
3. 1,012 views
16. The best "measure" that a person has achieved high self-esteem isa. a record of strong academic performance b. confidence in
1. 3 answers
2. asked by Beth
3. 928 views
A hoop starts from rest at a height 3.0 m above the base of an inclined plane and rolls down under the influence of gravity.
1. 1 answer
2. asked by Anonymous
3. 921 views
If it takes a particle in SHM 0.20 s to travel from the equilibrium position to the maximum displacement (amplitude), what is
1. 1 answer
2. asked by Amy
3. 885 views
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the
1. 1 answer
2. asked by laura
3. 856 views
For the following balanced equation: 2 Ag+ (aq) + Cu(s) <<->> Cu2+ (aq) + 2 Ag(s)Which letter corresponds to the correct cell
1. 1 answer
2. asked by Tom
3. 842 views
A sine wave function f(x) = a sin(bx) has amplitude 10 and period 40. What are thevalues of a and b? (A) a = 10 and b = 20/pi (
1. 3 answers
2. asked by dat
3. 836 views
Which of the following statements best describes the instructional level achieved in an Informal Reading Inventorya. the student
1. 0 answers
2. asked by rj
3. 834 views
If 0.045 kg of ice at 0 C is added to 0.390 kg of water at 34 C in a 0.150 kg aluminum calorimeter cup, what is the final
1. 1 answer
2. asked by Anonymous
3. 820 views
Which of the following Acid+Base titration combinations would have a buffering region in their plot?1)Strong Acid+Strong base
1. 2 answers
2. asked by Anonymous
3. 803 views
A 3.8 kg object is supported by an aluminum wire of length 1.9 m and diameter 2.2 mm. How much will the wire stretch?
1. 1 answer
2. asked by Maria
3. 778 views
how do you say break camp in latin
1. 1 answer
2. asked by Anonymous
3. 777 views
The chance of getting a particular disease sometime during your lifetime is estimated at 1 in 20.Smoking increases the risk of
1. 1 answer
2. asked by Beth
3. 744 views
good dental hygiene for young children is most dependent on:a) regular checkups every 6 months b) use of toothpaste containing
1. 1 answer
2. asked by Anonymous
3. 732 views
Ways in which the human or environment problem impacts on the community
1. 17 answers
2. asked by pearl
3. 731 views
A race car makes two and a half laps around a circular track in 4.5 min. What is the car's average angular speed?
1. 1 answer
2. asked by Anonymous
3. 713 views
:Explain why a prime number must be deficient.
1. 1 answer
2. asked by Stacey
3. 710 views
The gravitational forces of the Earth and the Moon are attractive, so there must be a point on a line joining their centers
1. 1 answer
2. asked by Anonymous
3. 690 views
In nuclear reactors, subatomic particles called neutrons are slowed down by allowing them to collide with the atoms of a
1. 2 answers
2. asked by Brian
3. 682 views
Sorry for reposting this but I'm still confused with the last part...You have been sent in a small spacecraft to rendezvous with
1. 0 answers
2. asked by Catherine
3. 673 views
Name two institutions/community organisations that are involved in supporting or giving redress teenage pregnancy.Explain how
1. 4 answers
2. asked by Kenosi
3. 670 views
Who was Miles Macdonnel?He was first governor of Red River Colony and had a share in the HBC company. He bought land in the Red
1. 2 answers
2. asked by Emma
3. 670 views
Vicki measured the length of 8 leaves. The lengths were 10 cm, 12 cm, 15 cm, 15 cm, 19 cm, 11 cm, 18 cm, and 15 cm.What is the
1. 2 answers
2. asked by MATH HELP PLEASE
3. 667 views
If sinx= 5/13, and x is a positive acute angle, find sin (x + 3pi/2)
1. 3 answers
2. asked by Ju
3. 663 views
You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a
1. 0 answers
2. asked by Catherine
3. 656 views
A 89.0 kg person stands on one leg and 90% of the weight is supported by the upper leg connecting the knee and hip joint-the
1. 1 answer
2. asked by Bret
3. 654 views
1. You are planning to spend no more than $10,000 and no less than $8,000 on your landscaping project.a. Write an inequality
1. 2 answers
2. asked by Girlee
3. 642 views
A proton of mass m moving with a speed of 2.5×106 m/s undergoes a head-on elastic collision with an alpha particle of mass 4m,
1. 1 answer
2. asked by Brian
3. 642 views
A student reading his physics book on a lake dock notices that the distance between two incoming wave crests is about 0.65 m,
1. 3 answers
2. asked by Josh
3. 635 views
Here is a demonstration Pascal used to show the importance of a fluid's pressure on the fluid's depth : An oak barrel with a lid
1. 0 answers
2. asked by Catherine
3. 635 views
The number of vehicles entering each of 15 junctions from a motorway during a 20-minute period on a Sunday morning is given
1. 1 answer
2. asked by olek
3. 635 views
Is the capital word used right in this sentence, if not how can i use it with the same meaning of the sentenceHis song was
1. 2 answers
2. asked by Hannah
3. 632 views
I have a table to complete.Given that points A and B belong to a circle with centre O; If the area of the sector bounded by
1. 1 answer
2. asked by Br
3. 630 views
Which of the following does not show a difference between the wave theory and particle theory of light; reflection, refraction,
1. 1 answer
2. asked by abster
3. 626 views
For the SAT online course, when I was going o buy it, they asked for shipping information, so I'm confused... are they going to
1. 0 answers
2. asked by Amy~
3. 622 views
If 39.2 of 0.177 is required to neutralize completely 22.0 solution, what is the molarity of the acid?
1. 1 answer
2. asked by Ivy
3. 618 views
Just an instant before reaching the very bottom of a semicircular section of a roller coaster ride, the automatic emergency
1. 0 answers
2. asked by Jason
3. 618 views
0.560g of potassium hydroxide is added to 25.0 cm^3 of 1.00 mol dm^-3 of hydrochloric acid.Find the limiting reagent & please
1. 1 answer
2. asked by ALIYAH
3. 606 views
HC2H3O2 + CH3(CH2)4OH (H2SO4)=?
1. 1 answer
2. asked by Sandy
3. 586 views
single braces are used in the tabular list toA. connect terms on both sides of the braces. B. include nonessential modifiers and
1. 0 answers
2. asked by billy
3. 584 views
1st-the reason i keep change my name because some of my friends are using my computer by their own name to asked questions. we
1. 1 answer
2. asked by minh
3. 577 views
if sec theta=-5/4 and 180degree < theta< 270degree, find tan thetaa.-3/5 b 4/5 c.3/4 d.3/5
1. 1 answer
2. asked by minh
3. 576 views
Hi, I'm sure I'm doing something wrong here, I'm coming up with an exorbant amount of rainfall for ONE ROOF in a school. Somehow
1. 2 answers
2. asked by URGENT help plz plz plz plz
3. 567 views
Using the readings in Ch. 2 of the text, identify and explain at least one real-world application of algebraic concepts for one
1. 1 answer
2. asked by Anonymous
3. 566 views
Find the roots of the equation.4x to the second power plus 9=12x
1. 1 answer
2. asked by Loren
3. 563 views
If 0.045 kg of ice at 0 C is added to 0.390 kg of water at 34 C in a 0.150 kg aluminum calorimeter cup, what is the final
1. 0 answers
2. asked by Anonymous
3. 562 views
Could you please check these sentences on a school trip? Thank you very much.1) Next summer I'm going on holiday from 7 July to
1. 1 answer
2. asked by Henry1
3. 561 views
A 180 kg object is taken to a height of 350 km above the Earth's surface. The object's mass of height is 180 kg.What is the
1. 0 answers
2. asked by Katie
3. 560 views
A right triangle has sides of length 5, 12 and 13. What is the sine of the angle opposite the hypotenuse?(A) 1 (B) 5/12 (C) 5/13
1. 1 answer
2. asked by lan
3. 560 views
A 3.8 kg object is supported by an aluminum wire of length 1.9 m and diameter 2.2 mm. How much will the wire stretch?
1. 0 answers
2. asked by Catherine
3. 559 views
A 669 g sample of water at 83 degrees celsius is mixed with 486 g of water at 23 degrees celsius. What is the final temperature
1. 1 answer
2. asked by Maria
3. 555 views
insurance matrix,Insurance Matrix Type of Insurance Functions Example of Company Coverage Characteristics Auto Home Health
1. 2 answers
2. asked by Tracy
3. 553 views
How might the following affect blood volume (increase or decrease) (note: refer to physiology of kidney):High protein
1. 0 answers
2. asked by ivy
3. 548 views

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