Thursday
December 8, 2016

# Posts by Coco

Total # Posts: 82

Physics
A car moving with a speed of 180km/h was brought uniformly to rest by the application of the breaks in 20s. How far did the car travel after the breaks were applied?
March 7, 2016

Physics
A particle is at x=+5m at t=0, x=-7m at t=6s and x=+2m at t=10s. Find the average velocity of the particle during the intervals. (a) t=0 and t=6s (b) t=6s to t=10s (c) t=0 to t=10s
March 7, 2016

Physics
An aircraft flies 800km due east and then 600km due north. Determine the magnitude of it's displacement
March 7, 2016

Physics
It took a car driver 30min to travel a distance of 50km. What is the average speed?
March 7, 2016

trig
given cotθ = (1/2) √7, find sinθ and cosθ in quadrant I cotθ = x/y would 1/2 be the x and √7 be the y?
October 10, 2015

trig
would*
October 10, 2015

trig
for #1 i mean (1/2) √7 which 1/2 be the x and √7 be the y?
October 10, 2015

trig
1) given cotθ = 1/2√7, find sinθ and cosθ in quadrant I 2) given tanθ = √5, find secθ and cotθ in quadrant III
October 10, 2015

Chemistry
The equivalence point of any acid titrated with a base occurs when the A. concentration of the acid and concentration of the titrant are equal. B. mass of the acid and the mass of the titrant are equal. C. pH of the mixture of the acid and titrant is 7.0. D. volume of the acid...
August 14, 2015

chemistry
write the balanced chemical equation for the reaction that would occur ewhen a base is added to a solution containing H2PO4-/HPO4^2- buffer system can you please help we write this balanced equation. thank you
August 14, 2015

Chemistry
Can you please explain to me how you would regulate the pressure to favor the products in the this equilibrium system. MgCO3(s)--><-- MgO(s)+CO2(g)
August 11, 2015

Chemistry
Which processes are taking place in the following reaction? 2CO(g) + O2(g) ⇌ 2CO2(g) A. displacement and reduction B. synthesis and decomposition C. ionization and recombination D. sublimation and evaporation Is B right?
August 9, 2015

Chemistry
What is the rate also what is k and Sr i am so confused
August 7, 2015

Chemistry
what information must you know to calculate the boiling point elevation of a solution of hexane in benzene. Is it the temp, Kb and the molality?
August 7, 2015

Chemistry
Ok I got .2799 moles, do i have to convert it to grams, how would I do that.
August 7, 2015

Chemistry
heating cyclopropane (C3H6) converts it to propane (CH2=CHCH3). The rate law is first order in cyclopopane. If the rate constant at a particular temp is 6.22x10^-4 s^1 and the concentration of cyclopropane is held at .0300 mol/L, what mass of propane is produced in 10.0 min in...
August 7, 2015

Math
Which is the best type of graph to show the number of markers in each classroom, if markers come in boxes of 20?
May 11, 2015

math
(3+1/3) * (1+1/4) = 10/3 * 5/4 = 25/6 = 4 1/6
March 5, 2015

Math - Algebra
our riding your bike to the park, sit to read for a while, and then ride your bike home. It takes you less time to ride from the park to your house than it took to ride from your house to the park. Draw a sketch of a graph that shows your possible distance traveled over time. ...
February 26, 2015

Chemistry
An automobile tire has a maximum rating of 38.0 psi (gauge pressure). The tire is inflated (while cold) to a volume of 11.8 Liters and a gauge pressure of 36.0 psi at a temperature of 12.0 Celsius. While driving on a hot day, the tire warms to 65.0 Celsius and it's volume ...
February 20, 2015

Consumer Math
Marta borrowed \$1,380 for 15 months at 13 percent APR. How much will she pay in interest?
February 11, 2015

Economics
Are these questions positive or normative? 1)Too many people smoke. 2)Lung cancer kills millions each year. 3)If government were to increase taxes on cigarettes, people would smoke less.
September 14, 2014

Math
The perimeter of rectangular garden is 40 feet. The width is 2 feet more than half the length. What is the length and width
April 16, 2014

Science
thanks big help
March 4, 2014

SS-1 question
is it right ?
February 5, 2014

Government
name three roles that interest groups play in American electionsl
November 14, 2013

physics
T₁=2πsqrt(m₁/k) T₂ =2πsqrt(m₂/k) T₂ /T₁ =sqrt{ m₂/m₁} T₂ = T₁sqrt{ m₂/m₁}= =3.5•sqrt(2/1) =4.95 s.
September 12, 2013

Science
August 21, 2013

Math
Okay I think I get it.. you just used the compliment to add up to 100? We are given 20%... did you say 100-20=80 and then turned 80 into a decimal ?
January 29, 2013

Math
Judy bought a coat at a 20% discount sale for \$68. What was the original price of the coat?
January 29, 2013

Physics
A 8.5 dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. He walks along the length of the canoe at 0.47 , relative to the water, and the canoe simultaneously moves in the opposite direction at 0.17 .What is the mass ...
November 22, 2012

Physics
A 1.2 -long steel rod with a diameter of 0.50 hangs vertically from the ceiling. An auto engine weighing 4.7 is hung from the rod. By how much does the rod stretch?
November 22, 2012

statistic
The time necessary to assemble a discount store display is normally distributed with μ = 5 minutes and σ = 30 seconds. A large number of potential employees are timed assembling a practice display. How much time (in minutes) should the personnel manager allow the ...
November 8, 2012

statistic
Suppose a random sample of 25 students is selected from a community college where the scores in the final exam (out of 125 points) are normally distributed, with mean equal to 112 and standard deviation equal to 12. Find the probability that the sample mean deviates from the ...
November 8, 2012

calculus
f(x)=1-3x g(x)=5x^2+3x+2 find f(g) g(f) and f(f) and their domains.
October 29, 2012

MATHS!!!!!!!!!!!!!!!!!!
20 sec to fill ten-litre bucket with water 60 / 20 = 3 3 x 10 = 30 litres per hour ?
August 29, 2012

History
so is it really c? because i've been stuck on this question for about 20 minutes
June 6, 2012

algebra
given the function k described by k(x)=x+20 find each of the following k(0)= k(-12)= k(-9)= k(15)= k(y+1)=
March 18, 2012

algebra
f(x)=x+19
March 18, 2012

math
Which of the following shows the next step using the least common denominator to simplify 7/8-5/6?
March 17, 2012

A ball is thrown downwards at a velocity of 14m/s from a bridge. One second earlier a rock is dropped from the same bridge. a)When will the ball meet up with the rock. b)When will the ball meet up with the rock? c)What is the initial minimum speed by the ball in order to catch...
February 12, 2012

Physics
Car A passes a light post moving at 25m/s and continues at this speed. Two seconds later, another car passes the light post moving at 40m/s. Assuming no acceleration of either car. a)How much time will it take for the second car to catch up with the first car? b)How far from ...
February 12, 2012

math
Ruth sells cars. She receives a commission of 12% on sales up to \$35,000 and a commission of %24 on sales over \$35,000. What is Ruth's commission if she sold a car for \$50,000?
March 28, 2011

AROBBERDUCKY
February 17, 2011

Math/Fractions
Tanisha has 2 new kittens. Together they weigh 3 5/8 pounds. If the male kitten weighs 5/8 pound more than the female kitten, how much does the male kitten weigh?
December 9, 2010

chemistry
Data collected from the calorimetry of a metal mass of the metal = 110.62g initial temperature of the water in the cup = 23.0 C initial temperature of the metal in the boiling water = 99.02 C final temperature of the metal AND water in the cup=25.54C volume of the water =100....
June 5, 2010

Chemistry
Well, Benedict's test detects reducing sugars (such as glucose). Benedict's reagent contains blue copper ions (Cu2+) which are reduced to copper (Cu+) in the presence of reducing sugars. These are precipitated as red copper(I) oxide which is insoluble in water. The ...
March 30, 2010

you multiply the bottom nunber
March 23, 2010

college physics
Two forces, of magnitudes F_1 = 80.0 N and F_2 = 25.0 N, act in opposite directions on a block, which sits atop a frictionless surface. Initially, the center of the block is at position x_i = -4.00 cm. At some later time, the block has moved to the right, and its center is at ...
February 25, 2010

college physics
Suppose that the coefficient of friction between your feet and the floor, while wearing socks, is 0.250. Knowing this, you decide to get a running start and then slide across the floor. If your speed is 3.00 m/s when you start to slide, what distance, d, will you slide before ...
February 25, 2010

physics, plehase help
The force of gravitation between two objects. Is 500 Newton's. What would the force of gravitation be if the distance between these two objects increased by 10 times?
January 30, 2010

biology
The continue to photosynthesize to have a spare storage of energy in case anything should happen. Like in humans for example humans store energy in ATP sacks. These bursts of extra energy are used when one is tired and so on.
October 11, 2009

Chemistry
May 19, 2009

Chemistry
An acid is comprised of 0.2g hydrogen, 7.1g chlorine and 12.8g oxygen. What is the most likely formula for this acid.
May 19, 2009

chemistry
Define the following concepts a. standard solution b. mole c. molar mass
May 19, 2009

chemistry
Define the term 'polymer' and then name two examples of naturally occurring polymers.
May 19, 2009

Biology
If pure-breeding tall plants are self-fertilized what kind of plants always grow from the seeds that are produced?
March 25, 2009

Oh my gosh! I didn't think of that!!! thank you SO much for the idea!
March 17, 2009

does anyone have any suggestions or words that apply to this area that i could try to work together?
March 17, 2009

Haha, thank you; I was considering using that one if i couldn't find anything better. :)
March 17, 2009

I am doing a history project on marketing inventions from the 1800s. I have to create a poster that includes a catchy slogan for a factory system. (remember that it is from the 1800s.) If you could help give me some ideas that would be great!!! thank you so much! If possible, ...
March 17, 2009

thank you, and sorry that it took me so long to reply, my computer froze up and wouldn't allow me to reboot it for a while. :) Once again, thank you!!!
March 8, 2009

I'm writing a research report on the very first stagecoaches. The information that I cannot find is: Who invented it who has improved it over the years how and where was it originally used If not used today, why is it not used, and what replaced it? Thank you SOOOOOO much ...
March 8, 2009

civics (history)
specifically what does 'incriminating' mean?
February 15, 2009

civics (history)
oh ok. well I think it implemented the 14th amendemnt by creating the 'miranda warning' where that you have the right to remain silent; that anything you say may be used as evidence against you and the right to know you have the right to an attourney. but i'm nnot ...
February 15, 2009

civics (history)
excuse me?
February 15, 2009

civics (history)
Miranda v. Arizona case how is the 14th amendment implicated in this case? how did the court go beyond its usual practice in coming to a decision?
February 15, 2009

science
I cant really locate it but these rivers are originat at the Appalachion Mountains.
February 9, 2009

Math
If m2 = m1*d1/d2 what is d1 and d2 when m1 is 50 and m2 is 84
February 4, 2009

chemistry
What is the chemical name for Salt Water
February 2, 2009

math
Evaluate the following. Remember to use the order of operations. 4-(-3) + 1 ______________ 2-2/(-2)
September 15, 2008

HELP! pre-algebra
THNX SO MUCH U ROCK!lol
September 5, 2008

HELP! pre-algebra
i have a word unscramble that i need help with i have to turn this word in unscrambled so this is the word scrambled: Seprororpit p.s. please relply asap thnx :]
September 5, 2008

math
Write 8% as a fraction or a mixed number.
September 4, 2008

Pre Algebra
p.s it is supposed to be a algebra word
June 5, 2008

Pre Algebra
random question: i have a pre-algebra unscramble and i need help to unscramble the word the word they gave me was: Seproropit can any of u help me?
June 5, 2008

Math
A cyclist bikes x distance at 10 miles per hour and returns over the same path at 8 miles per hour. What is the cyclist’s average rate for the round trip in miles per hour?
August 22, 2007

the big idea of energy
omg wat is th ebig idea thing grat help
December 5, 2006

the big idea of energy
this is so hard i'm doin the iron and sulphur reaction and its do in tomorro and we got dis stupid teacher (tba)
December 5, 2006

the big idea of energy
omg!! lol i got da ear defenders hw now!! ive gt no idea ov wat 2 do!! HELP!!
December 5, 2006

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