Wednesday
December 7, 2016

# Posts by Kelly

Total # Posts: 1,710

Math
-8(t-3)-(t+1)=6
September 24, 2012

Physics
A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 3.20 s for the ball to reach its maximum height.
September 21, 2012

Physics
A ball is thrown vertically upward with a speed of 15.0 m/s. (a) How high does it rise? (b) How long does it take to reach its highest point? (c) How long does the ball take to hit the ground after it reaches its highest point? (d) What is its velocity when it returns to the ...
September 21, 2012

Physics
In 1865, Jules Verne proposed sending men to the Moon by firing a space capsule from a 220-m-long cannon with final speed of 10.97 km/s. What would have been the unrealistically large acceleration experienced by the space travelers during their launch? (A human can stand an ...
September 21, 2012

Physics
A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 205 mi/h in 3.00 s. (a) Find the average acceleration of the plane. (b) Assuming the acceleration is constant, find the distance the plane moves.
September 21, 2012

Physics
The average person passes out at an acceleration of 7g (that is, seven times the gravitational acceleration on Earth). Suppose a car is designed to accelerate at this rate. How much time would be required for the car to accelerate from rest to 59.1 miles per hour?
September 20, 2012

Physics
A tortoise can run with a speed of 0.13 m/s, and a hare can run 20 times as fast. In a race, they both start at the same time, but the hare stops to rest for 4.0 minutes. The tortoise wins by a shell (35 cm). (a) How long does the race take? (b) What is the length of the race?
September 20, 2012

Physics
A motorist drives north for 40.0 minutes at 61.5 km/h and then stops for 15.0 minutes. He then continues north, traveling 130 km in 1.70 h. (a) What is his total displacement? (b) What is his average velocity?
September 20, 2012

health
i think its B.
September 18, 2012

Math
1.d 2.a 3.c 4.b
September 13, 2012

science
I need helping locating information about the environment of Costa Rica so that I can analyze data about the country.
September 9, 2012

HSM/270
Last few weeks of class and struggling to keep up to graduate, can somebody help me if they have done this before, also i used the PEACE Program for my assignments in this Grant Proposal and Writing class. Thanks Identify where the program planning and evaluation process can ...
September 8, 2012

english
September 7, 2012

math
What are the step to help solve for 5r+30/20= 3r-36/3
September 7, 2012

math
How to write the ration as a fraction in lowest terms. Compare in hours. 22 hours to 3 days. The ratio is __.
September 7, 2012

math
The distance between city A and city B is 500 miles. On a certain wall map, this is represented by a length of 2.3 feet. On the map, how many feet would there be between city C and city D, two cities that are actually 800 miles apart? On the map, city C and city D are ___ feet...
September 7, 2012

math
If 5 sweaters cost \$39.40, how much would 8 sweaters cost? The cost is \$__.
September 7, 2012

math
Write the ratio as a fraction in lowest terms. compare in inches. 3ft to 31 inches. The ratio is__.
September 7, 2012

math
The sum of the measures of the angles of any triangle is 180 degrees. In triangle abc, angles a and b have the same measure, while the measure of angle c is 78 degrees larger than each of a and b. What are the measures of the three angles? angle a is __degrees.
September 7, 2012

math
If planet I is 31.8 million miles from the sun than planet II, then planet III is 25.6 million miles father from the sun than planet I. When the total of the distances for these three planets from the sun is 200.2 million miles, how far away from the sun is planet II? Planet ...
September 7, 2012

math
An electrician cuts a 26ft piece of wire into two pieces. One piece is 4ft longer than the other. How long are the pieces? What is the length of the shorter piece?__ft
September 7, 2012

Comunication Skills
Cultural history.
September 7, 2012

Math
Evaulate each expression: (-1/8)^1/3 Would you make it 3 square root of -1/8? I don't know how to go from there. (256/81)^1/4 Same thing, would it become 4 square root (256/81)?
September 6, 2012

Math
Factor out the common factor: −3x^4 y^2 + 18xy^3 + 9xy^4
September 5, 2012

Math
Factor the trinomial: 2x^2 +11x - 63
September 5, 2012

ENGLISH
yup! all were right! thanks so much!!:)
September 5, 2012

Algebra
August 30, 2012

Algebra
please help me solve my homework with all the work involved. i have trouble paying attention in class so it's hard for me to do my homework. here are a few of the questions. I need to find out what the letters equal. 1.) 10(-4+y)=2y 2.)9(b-4)-7b=5(3b-2) 3.)-(8n-2)=3+10(1-...
August 30, 2012

Math.
A spinner is divided into 8 equal sections. There are 3 yellow sections and 5 green sections. The spinner is spun 32 times. Which proportion can be used to find the number of times, B, that the spinner could be expected to land on a green section?
August 23, 2012

English
Opps I mean dedicate*
August 10, 2012

English
I am writing a paragraph about why I want to participate in this school counsil thing and I was wobderi if the word choice for "deticate" in this sentence makes sense: I want to deticate myself to participate in more school activities.
August 10, 2012

English
Is this sentence right? I have never had a pet before.
August 9, 2012

Svience
I'm just courious what "ragweed mix" is/are. Is it one type of plant or a bunch?
August 9, 2012

history
the construction of Levitt Towns
August 9, 2012

stats 101
how do you find the lower class limit,upper class limit, class width, class midpoint, and class boundaries from a set of frequencies data
July 30, 2012

physics
Two positive charges, each of magnitude 2 10-6 C, are located a distance of 17 cm from each other. (a) What is the magnitude of the force exerted on each charge?
July 24, 2012

health and diseases
Im not sure how to do it? I need suggestions
July 14, 2012

health and diseases
I need help on doing a powerpoint presentation about trichomoniasis
July 14, 2012

Chemistry
I am stuck on this question: what mass of KCl in grams when 2.00 lbs KC10 3 is decomposed?
July 14, 2012

anth
why is anthropology necessary in a career/life?
June 25, 2012

abnornal psych
so what are the necessary reason for and aganist establishing a specific disorder related to suicide?
June 18, 2012

abnornal psych
should suicide be added to the DSM IV- TR and what are the reason for and aganist establishing a specific disorder related to suicide?
June 18, 2012

Math
If y is directly proportional to x and inversely proportional to z^2, by what value is y multiplied if x is doubled and z is multiplied by 3
June 18, 2012

physics
You have a mass of 71 kg and are on a 51-degree slope hanging on to a cord with a breaking strength of 165 newtons. What must be the coefficient of static friction to 2 decimal places between you and the surface for you to be saved from the fire? In the previous problem if the...
June 16, 2012

College physics
A skier traveling at 30.9 m/s encounters a 21.5 degree slope. If you could ignore friction, to the nearest meter, how far up the hill does he go?
June 16, 2012

Physics
I'm still a little confused. When I use the equation: W = k(x2^2 - x1^2)/2, I get 0.0216 J. This doesn't seem correct.
June 2, 2012

Physics
A spring with k = 54 N/cm is initially stretched 1 cm from its equilibrium length. (a) How much more energy is needed to further stretch the spring to 2 cm beyond its equilibrium length? (b) From this new position, how much energy is needed to compress the spring to 2 cm ...
June 2, 2012

Chemistry
Calculate the final pressure on the addition of 2.0 g He(g) to a vessel of 10.0 L fixed volume already containing O2(g) at 25°C and 740 mm Hg
May 29, 2012

Learning through Play
One of the parents in your school says, “I really enjoyed coming to Parents’ Night last week and seeing all the things the children are doing. I was particularly interested in your comments about the materials which enhance cognitive abilities. Why is it so much ...
May 25, 2012

Calc- Trig Substitution
integral of dx/square root(x^2-64) My answer is: ln (x/8 + square root(x^2-64)/8) +c is this right?
May 25, 2012

physics
A model of a helicopter rotor has four blades, each 3.40 {m} in length from the central shaft to the tip of the blade. The model is rotated in a wind tunnel at 580 {rev/min}. What is the radial acceleration of the blade tip, expressed as a multiple of the acceleration g due to...
May 22, 2012

chemistry
how many times a proton is heavier than an electron
May 19, 2012

Math
Write an addition problem in which, when the addends are rounded to the nearest ten, the sum is 90. Then explain how you use estimation to solve the problem.
May 15, 2012

physics
A skydiver jumps out of a hovering helicopter, so there is no forward velocity. Use this information to answer questions 1 to 9. Ignore wind resistance for this exercise. What is the skydiver's acceleration?
May 11, 2012

functions 12
after i solve for x then that is my answer? so x=1/3,-1
May 8, 2012

functions 12
so would it be (3sinx-1)(4sinx+4)=0?
May 8, 2012

functions 12
solve 12cos^2X=8+13sinX between the window of -360 ¡Ü x ¡Ü 360
May 8, 2012

chemistry
Why are hydrogen ions NEVER found in an aqueous solution?
May 7, 2012

geometry
the top of a giant slide is 30 ft off the ground. the slide rises at a 30 degree angle. to the nearst whole foot, what is the distance down the slide?
May 5, 2012

Science
I have a few questions if someone could please help with them: Which of the following is true: A.Relative dating tells us how long ago something existed B.Disconformities are less common but usually far more conspicuous because the strata on either side are essentially C....
April 27, 2012

Chemistry
A solution of .12 mol/L of phosphoric acid completely neutralizes .20L of a solution of sodium hydroxide with.a concentration of .15mol/L What is the neutralizing volume of the phosphoric acid?
April 27, 2012

ethics
I am doing a presentation on biomedical issues- abortion. My part is what issues involve problems with consent. Can you help please
April 26, 2012

Earth Science
Which of the following is true: -Relative dating tells us how long ago something existed -Disconformities are less common but usually far more conspicuous because the strata on either side are essentially -Estimates indicate that the North American continent is being lowered ...
April 25, 2012

Chemistry
Are these right? I didn't know some of them. 1. AgNO3 Soluble, rule 3 2. Ag2SO4 Insoluble, rule 4 3. HgCl2 Insoluble, rule 2 4. BaSO4 Insoluble, rule 4 5. CaCl2 Soluble, rule 2 6. NH4OH ? 7. PbCl4 Insoluble, rule 2 8. Mg(C2H3O2)2 Soluble, rule 3 9. HgCl Soluble, rule 2 10...
April 23, 2012

Chemistry
how do you determine the solubility of the following salts: 1. AgNO3 2. Ag2SO4 3. HgCl2 4. BaSO4 5. CaCl2 6. NH4OH 7. PbCl4 8. Mg(C2H3O2)2 9. HgCl 10. CaF2 11. CuO 12. AgI 13. Al(OH)3 14. Fe2(CO3)3 15. CrPO4 16. K2S
April 23, 2012

Chemistry
what are the rules used to determine the solubility of salt?
April 23, 2012

Honors Chemistry
1. What is the pH of a solution whose [H3O+] is 1 X 10^ -5 M? 2. What is the [H3O+] concentration of a solution with a pH of 9? 3. What is the pH of a solution whose [H3O+] concentration is 3 X 10^-3 M? 4. What is the pH of a solution with a [H3O+] concentration of 1 X 10^ -12...
April 19, 2012

Shurley English
What are Single Quotes and when do you use them?
April 17, 2012

Phsyics
A cannonball is fired into the air with a speed of 42 m/s from a height of 28 m, with what speed does the cannonball hit the ground?
April 16, 2012

physics
An unmarked police car traveling a constant 95km/h is passed by a speeder traveling 14km/h .Precisely 2.50s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.30m/s^2 , how much time passes before the police car ...
April 15, 2012

Science
The object distance for a convex lens is 15.0 cm, and the image distance is 5.0 cm. The height of the object is 9.0 cm. What is the height of the image?
April 13, 2012

Math
a.16 inches by 16 inches b.15 inches by 15 inches c.19 inches by 19 inches d.17 inches by 17 inches
April 12, 2012

Math
Janna is creating a multi-tiered cupcake display for a party. She plans on having 16 cupcakes on each tier. -There is a 1-inch space between all cupcakes. -The cupcakes have a uniform width [diameter] of 3 inches. -Each tier will display the cupcakes in either 2 rows of 8, or ...
April 12, 2012

what are the methods of computing the veolicty of a particle in one- dimensona motion from a graph ?
April 10, 2012

physcis ! HELP !!!!
which of collowing situations describe a particle that might have a non-zero velocity? canbe more than one A) a particle that has a constant position as a function of time B) a particle that has its position changing as a fnction of time c)when you graph the particle's ...
April 10, 2012

physics
which of collowing situations describe a particle that might have a non-zero velocity? canbe more than one A) a particle that has a constant position as a function of time B) a particle that has its position changing as a fnction of time c)when you graph the particle's ...
April 10, 2012

physics
what are the methods of computing the veolicty of a particle in one- dimensona motion from a graph ?
April 10, 2012

World History
because
April 9, 2012

algebra
Using the formula for BMI: B = 703(w)/ h² When the weight is 100 lbs and the BMI is 20, how do I figure out the persons height?
April 9, 2012

physics
An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What is the time if the...
April 8, 2012

physics
An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What is the time if the...
April 8, 2012

physics
i got answers to some of the questions Q1: 3.3 mins Q2: ?km <- still need help with Q3:23.3 Q4:?km still need help with
April 8, 2012

physics
An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What is the time if the...
April 8, 2012

Science
Identify 5 different materials that you encounter or use on a daily basis, and identify a mineral that is mined to supply each of those materials.
April 5, 2012

Math
Thank you for the help :)
April 3, 2012

Math
The Longhorns punted the ball from the 5-yard line. The punt was caught at the 41-yard line and returned to the 19-yard line. The ball did not cross the 50-yard line. What was the net yardage on the play?
April 3, 2012

Physics Help!!!
its wrong :/
April 3, 2012

Physics Help!!!
One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its fundamental mode. Part A- If the tension in this string is increased by 3.2 , what will be the new fundamental frequency of the string? F= ? Hz i understood ...
April 3, 2012

Physics Help!!!
One of the 79.0 -long strings of an ordinary guitar is tuned to produce the note (frequency 245 ) when vibrating in its fundamental mode. Part A- If the tension in this string is increased by 3.2 , what will be the new fundamental frequency of the string? F= ? Hz i understood ...
April 3, 2012

physics
Two point charges are fixed on the y axis: a negative point charge q1 = -23 µC at y1 = +0.23 m and a positive point charge q2 at y2 = +0.33 m. A third point charge q = +7.8 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other ...
March 29, 2012

math
A cylinder shaped sculpture is 24 meters high with a diameter of 6.8 meters. An artist plans to spray paint the entire surface with silver paint. If 1 can of spray paint covers 50 square meters, how many cans does the artist need to paint the sculpture?
March 28, 2012

Chemistry III
I'm sorry thank you so much for all your help but I seem to be getting the wrong answer for part c and I don't understand how to get the individual ion's moles for part b. I have the correct volume of 0.00197L. For part c I am doing as you say and I get a pOH of 5....
March 27, 2012

Chemistry III
Assume you dissolve 0.240 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 1.16 102 mL of solution and then titrate the solution with 0.153 M NaOH. C6H5CO2H(aq) + OH -(aq) C6H5CO2-(aq) + H2O(l) (a) What was the pH of the original benzoic acid solution? (b) ...
March 27, 2012

Chemistry II
You place 1.234 g of solid Ca(OH)2 in 1.00 L of pure water at 25°C and it partially dissolves. The pH of the solution is 12.40. Estimate the Ksp for Ca(OH)2.
March 27, 2012

Chemistry
A 20.2 mL sample of a weak monoprotic acid, HX, requires 50.0 mL of 0.060 M NaOH to reach the equivalence point. After the addition of 30.0 mL of NaOH, the pH is 5.50. What is the Ka of HX?
March 27, 2012

arithmetic
The pet shop owner told jean to fill the new fish tank 3/4 full of water.Jean filled the tank 9/12 full.What fraction of the tank does she still need to fill?
March 21, 2012

statistics
A student is interested in whether students who study with music playing devote as much attention to their studies as do students who study under quiet conditions (he believes that studying under quiet conditions leads to better attention). he randomly assigns participants to ...
March 18, 2012

CHEMISTRY HELP NEEDED!!
Given info: Reaction: 3A+2B--->2C+D {A] (mol/L) 1.0 ×10^-2 1.0 ×10^−2 2.0 ×10^−2 2.0 ×10^−2 3.0 ×10^−2 [B] (mol/L) 1.0 3.0 3.0 1.0 3.0 Rate of appearance of C (mol/L-hr) 0.30×10^−6 8.10×10^−6 3....
March 11, 2012