pablo
Most popular questions and responses by pablo
Physics
Two electrostatic point charges of +60.0 uC and +50.c uC exert a repulsive force on each other of 175 N. What is the distance between the two charges?
asked on January 16, 2011 
Math
1. Write a rule for the sequence. 3,3,9,15.... Start With 3 and add 6 repeatedly Start with 6 and add 3 repeatedly •• Start with 3 and add 6 repeatedly Start with 3 and subtract6 repeatedly 2. Find the next three terms of the sentence.
asked on March 31, 2016 
Math
The formula V=lwh is used to calculate the valume of a rectangular prism. What is the equation solved for h? A. Vlw = h B. lw/V = h C. V/lw = h•• D. Vh = lw Correct me
asked on March 30, 2016 
Physics Work related
If 2.0 J of work is done in raising 180 g apple how far is it lifted? I would assume that 2/180 = x but I divided it and it does not sound right.. please someone help.
asked on October 27, 2010 
Math
Write an expression to describe a rule for the sequence then find the 100th term in the sequence. 4,9,14,19,24,29.... A. 4+5n;504•• B. 5n1;498 C. 5n;500 D. 4n+5;405 Correct me
asked on March 31, 2016 
physics
what potential difference is required to pass 3.0 A through 28 ohm's
asked on February 22, 2011 
Math
A bank offers two interest account plans. Plan A gives you 6% interest compound annually. Plan B gives you 13% annual simple interest. You plan to invest $2,000 for the next 4 years. Which account earns you the most interest (in dollars) after 4 years? How
asked on March 29, 2016 
science
Complete the following sentence with the best phrase below. Removing just one species from an ecosystem B.would have little effect; unless it was a key stone D.would have a negative effect; especially if it was a keystone species
asked on December 11, 2013 
Physics ( check answers)
Question 1 A 0.50 kg football is thrown with a velocity of 15 m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.020s . What is the force exerted on the receiver? So I used mvfmvi/change(t) I got 375 for that one...
asked on December 9, 2010 
science
Which of the following pairs of terms could describe a bullfrog that is active at night and enters a state of complete inactivity during cold months? cooperation and hibernation aggression and circadian rhythm circadian rhythm and hibernation courtship and
asked on December 11, 2013 
Math
You borrow 1,200 at a rate of 4.5% for a period of 6 months How much will you repay at the end of 6 months? A. 27 B. 54 C. 1,173 D. 1,227•• Correct me
asked on March 28, 2016 
Physics Work
A worker pushes a 1.50*10^3 N crate with a horizontal force of 345 N a distance of 24.0 m. Assume the coefficient of kinetic friction between the crate and the floor is 0.220. a. How much work is done by the worker on the crate? b. How much work is done by
asked on October 27, 2010 
chemistry
To half of it (500. mL), you add 0.0100mol of hydrogen ions without changing the volume. What is the pH of the final solution?
asked on July 22, 2013 
Math
Do bloods watch blues clues ??
asked on December 9, 2018 
math
Select the equation in which the graph of the line has a positive slope, and the yintercept equals 8. Question 1 options: x  2y = 10 10x  5y = 40 5x + y = 50 5x  10y = 12
asked on June 5, 2017 
tigonometry
expres the following as sums and differences of sines or cosines cos8t * sin2t sin(a+b) = sin(a)cos(b) + cos(a)sin(b) replacing by by b and using that cos(b)= cos(b) sin(b)= sin(b) gives: sin(ab) = sin(a)cos(b)  cos(a)sin(b) Add the two equations:
asked on November 26, 2006 
chem
A beaker with 120mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 5.70mL of a 0.450M HCl solution to the beaker. How much will the pH change? The
asked on July 22, 2013 
Algebra
Can someone check my work I have to find the value of x^3 + 2x^2  3 My answer: 27 + 18  3
asked on December 14, 2018 
social studies
how did the geography and climate of the pacific Northwest affect the American Indian there?
asked on October 17, 2009 
History
hi, i really need help with this question you don't need to tell me the answer but please just help me out!!! Which of the following best describes the terms of the Treaty of GuadalupeHidalgo? A.) Mexico paid the U.S. two million dollars and gave up
asked on June 12, 2015 
Social Studies
Illustrate the reasons for conflict between the superpowers by dragging and dropping the descriptions to the appropriate label. Soviet Cold War economy:: Government planners make all decisions. Private property is not allowed. command economy Private
asked on October 6, 2018 
english
Which literary movement often rejects order, blurs distinctions between literature types, and uses playfulness in storytelling? Classicism Realism Naturalism Postmodernism
asked on April 12, 2017 
statistics
If 1,000 students take a test that has a mean of 40 minutes, a standard deviation of 8 minutes, and is normally distributed, how many would you expect would finish in between 24 and 48 minutes?
asked on August 6, 2014 
PreCalculus
Solve the equation by finding the square root. 4u2 + 4u + 1 = 75
asked on November 1, 2010 
PhysicsKinetic energy
Two 2.0 g bullets are fired with speeds of 40.0 m/s and 80.0 m/s, respectively. What are their kinetic energies? Which bullet has more kinetic energy? What is the ratio of their kinetic energies? A car has kinetic enery of 4.32* 10^5 when traveling at a
asked on October 30, 2010 
AP Government(Research question so not really)
I am supposed to make an annotated bibliography for all the research I have done for my history fair project. Thing is I don't know how to make an annotated bibliography and I have looked up examples and I am not sure if you can do it with 50 sources. I am
asked on October 30, 2010 
College Chemistry
Oxygen has a Henry’s law constant of 1.3*10^3 mol/kg*bar at 25 °C when dissolving in water. If the total pressure of gas ( gas plus water vapor) over water is 1.00 bar, what is the concentration of O2 in the water in grams per milliliter? (The vapor
asked on February 3, 2016 
Math
Your cell phone cost $40 per month plus $0.15 for each text message you send or receive. You have at most$45 to spend on your cell phone bill. What is the maximum number of text messages that you can send or receive next month?
asked on May 4, 2014 
PreCalculus
I want to learn how to find the domain, holes, xintercepts, y intercepts, vertical asymptotes, and horizontal asymptotes of a rational function. I know it is against the rules in jiskha to do the homework for the students but if I have been looking over
asked on December 2, 2010 
Maths
factories 3p^2 11p 6?
asked on June 9, 2019 
Physics ( elestic potential energy)
A spring with a force of 5.2 N/m has a relaxed length of 2.45. When a mass is attached to the end of the spring and allowed to come to rest. the vertical length of the spring is 3.57m. Calculate the elastic potential energy stored in the spring.
asked on November 4, 2010 
Math
What is the equation x=y+z solved for z? A. X+y=z B. X/y=z C. Y/x=z D. Xy=z•• Correct me
asked on March 30, 2016 
Physics
An archer's bow applies a force to an arrow over a distance of 19cm, while firing it vertically upwards. If the arrow achieves a speed of 8.0m/s and the efficiency of the bow is 75%, determine the average force applied to the arrow by the bow. So far I
asked on January 28, 2015 
math
At a certain grocery store, "a" customers each spend an average of $30 every "b" hours. How much revenue , in dollars, does the store collect in "c" hours?
asked on August 13, 2013 
Physics
Ok so I am not so bad at physics but I find it hard to understand formular like how to use this one mu *m*g= I know its somewhat related to friction but what is the mu stand for and g too IF someone could plzz translate these symbols to words I would
asked on October 17, 2010 
Chemistry
I have a Chemistry question which should be very simple but I do not know what significant figures are. Assuming the following numbers are measurements and using the rules for significant figures, determine the answer for the following calculation.
asked on January 10, 2013 
Science
Chemistry Enthalpy Calculations? Given the equation: CaO + H2O > Ca(OH)2 A 1 g sample of CaO is dissolved in 100 ml water with density 1.00g/ml. The temperature rise is 3.7 degrees C. The specific heat is 4.00 J/g*deg. 1. Calculate the heat (in J)
asked on October 18, 2012 
Physics(Checking answer)
Sorry for the repost but I really need to know this, but now I just want to know if the question is right. A spring with a force of 5.2 N/m has a relaxed length of 2.45. When a mass is attached to the end of the spring and allowed to come to rest. the
asked on November 4, 2010 
Habla Espanol?
Habla Espanol? si' Thank you for using the Jiskha Homework Help Forum. If you are asking that question correctly, note that the proper punctuation must be at the beginning of the sentence, the tilde is required over the ñ and the language is NOT
asked on June 2, 2007 
Physics ( check answers)
Question 1 A 0.50 kg football is thrown with a velocity of 15 m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.020s . What is the force exerted on the receiver? So I used mvfmvi/change(t) I got 375 for that one...
asked on December 9, 2010 
Math
You borrow 1,200 at a rate of 4.5% for a period of 2 years. How much will you repay at the end of 2 years? a. $108 b. $1,080 c. $1,308 •• d. $2,280 Correct me
asked on March 28, 2016 
math
The vertex of a rectangle whose side lengths are 6 and 8 lies at the point (4,6) in the rectangular coordinate plane. Which of the following points could be a vertex of this rectangle? (A) (2,2) (B) (2,8) (C) (4,10) (D) (4,4) (E) (10,2)
asked on August 13, 2013 
Physics
Two electrostatic point charges of +60.0 uC and +50.c uC exert a repulsive force on each other of 175 N. What is the distance between the two charges? So let's say I use Coulomb's law would the repulsion of 175 N be considered the equivalent of the
asked on January 17, 2011 
Physics (Final Review)
Ok so tomorrow is my Physics final and I have so much depending on this one test ( all my other grades are 80 and above but this one is a low 70). I have studied for the final but if anyone could supply me with a list of most know formulas for physics I
asked on December 13, 2010 
Physics
all HELP appreciated! Thank You! A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steampowered catapult. The thrust of its engines is 2.1 105 N. In being launched from rest it moves through a distance of 87 m and
asked on October 19, 2009 
math
A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn: 2 + 5 + 8 + . . . + ( 3n  1) = n(1 + 3n)/2
asked on March 4, 2016 
chemistry
The volume of a gas at 20 C and 0.4 atm is 10 mL. What volume will the same gas sample occupy at standard conditions?
asked on February 8, 2011 
AP Government
I have a few question I need answered, if anyone could help I would really appreciate it... 2. All Presidents but one have been a. Protestant b. Catholic c. Evangelical Christian d. Atheist e. Hare Krishna 16. A mid term election is a. A Congressional
asked on November 15, 2010 
drivers' ed.
Are there some merge points where some drivers are entering while other drivers are exiting in close proximity? I was trying to get on earlier today, and if I had accelerated too sharply, I would have come close to a vehicle that was straight ahead of me.
asked on July 15, 2014 
Algebra2
Write an equation for the line in point/slope form and slope/intercept form that has the given condition. 1. Passes through (3, 2) and is parallel to 2xy=4 2. Passes through (1, 1) and is perpendicular to y = 5/2x + 3
asked on November 29, 2012 
Physics
If 2.0 J of work is done in raising a 280g apple, how far is it lifted? I would say F= 2.0/180 but that doesn't really sound right...
asked on October 25, 2010 
Algebra 2
yolanda sells two grades of dog food. type a sells for 75 cents per pound and type b sells for 52 cents per pound. how many pounds of each must be used to produce 600 pounds of mixture selling for 60 cents per pound?
asked on September 8, 2016 
Physics
A soccer ball is kicked with a velocity of 12m/s, HORIZONTALLY off a building which is 8.5m high. What is the velocity of the ball after 1.25s? This is what I found so far: Vi = 12m/s Dx = 15.8049336m Dy = 8.5m Time it took for ball to hit floor
asked on January 27, 2015 
Physics
A soccer ball is kicked with a velocity of 12m/s, HORIZONTALLY off a building which is 8.5m high. What is the velocity of the ball after 1.25s? This is what I found so far: Vi = 12m/s Dx = 15.8049336m Dy = 8.5m Time it took for ball to hit floor
asked on January 27, 2015 
Math
on Mindy's guitar, the frequency of a vibrating string varies inversely as the length of the string. When a guitar string of "s" inches in length that vibrates at a frequency of 80 cycles per second is shortened to 6 inches in length, it vibrates at a
asked on August 5, 2013 
Algebra2
Write the standard form of the equation of the circle with the given center and radius. 1. center (2, 0) and r = 3
asked on November 29, 2012 
Obese Heroes....
Who are some obese people who have had a positive impact on society and been good role models? Good role models for what, the American Heart Association? This is an odd question. Obesity is a serious condition, becoming very shortly the number 1
asked on May 9, 2007 
trig wave forms aargh!
express 10*sin*w.t in the form A*sin*w.t + B*sin*w.t It is already in the form you want. Just set A = 10 and B = 0.
asked on November 25, 2006

Algebra
So my final answer would be: 42?
posted on December 14, 2018 
Math
Feels bad
posted on December 13, 2018 
Algebra 1
wear da speedos
posted on December 12, 2018 
science
^nUt
posted on December 9, 2018 
Earth science
yall are too much with yo “We dOnT dO aLl yOuR wOrK fOr yOu !!”
posted on December 9, 2018 
Math
rip^
posted on November 20, 2018 
Math
thats a tuffy
posted on November 20, 2018 
Prealgebra PLease help
I hate life🤪🤪🤪🥵
posted on November 16, 2018 
algebra, HELP!
Scoopity woop scoop de woop de poop
posted on November 16, 2018 
algebra, HELP!
oop
posted on November 16, 2018 
math
yall weird
posted on November 15, 2018 
AP Physics
uhhhhhhhhhhhhhh
posted on November 11, 2018 
math miss.sue can u plz check me answers plz
If you need help with number one ill try to answer
posted on October 31, 2018 
math miss.sue can u plz check me answers plz
I meant to put nobody will use this**
posted on October 31, 2018 
math miss.sue can u plz check me answers plz
3. 0.73303330... 4. 17 meters 5. 27 6. Integer 7.6/7 8. 4 feet 9. 10 in. 10. Chase: “It should be between square root 49 and square root 64.” 11. 0.321321321... 12.11 feet 13.21 feet 14. Every irrational number can be written as a fraction I dont
posted on October 31, 2018 
Math PLZZ
is it fruit loops or froot loops ?
posted on October 16, 2018 
Social Studies
so Illustrate the reasons for conflict between the superpowers by dragging and dropping the descriptions to the appropriate label. Soviet Cold War economy:: Private property is not allowed. command economy Government planners make all decisions. U.S. Cold
posted on October 6, 2018 
Social Studies
Illustrate the reasons for conflict between the superpowers by dragging and dropping the descriptions to the appropriate label. Soviet Cold War economy:: Private property is not allowed. command economy Private citizens start new businesses. U.S. Cold War
posted on October 6, 2018 
Social Studies
no wait it "Government planners make all decisions" should go to U.S economy
posted on October 6, 2018 
Social Studies
should "Private citizens start new businesses" go to U.S. Cold War economy
posted on October 6, 2018 
ap
Bases
posted on June 5, 2018 
Algebra
Idk,,, bruh lol its 49.5 durr cuz 49.5*2= 99 +1 ( increased area) = 100 pi or original radius.
posted on March 17, 2018 
Math
12 12 45
posted on September 20, 2017 
MATH>:(
Well then good 4 u
posted on June 5, 2017 
math
Thanks
posted on June 5, 2017 
English
What is historical context? the people and events that influence a writer the map or plan a writer drafts while planning a story all the actions that take place during a story the author’s choice about where to publish a text
posted on April 12, 2017 
Math
yes
posted on December 4, 2016 
social studies grade 8
Si no ames diase
posted on October 26, 2016 
Physics
The normal force is 160 N. I am not quite sure how to find it though. The back of my textbook just says 160 N.
posted on September 27, 2016 
science
I don't know please help me
posted on August 20, 2016 
Chemistry
a 0.40 M HCl solution prepared from 25 mL of a 6.0 M HCl solution
posted on July 25, 2016 
General Chemistry
Density: 10.63 g/cm^3 m: 1.44 x 10^10
posted on May 1, 2016 
P.E
its c :)
posted on April 3, 2016 
Math
So for one it would be A???
posted on March 31, 2016 
Math
Okay thanks
posted on March 30, 2016 
Math
How do you know??
posted on March 30, 2016 
Chem
11.30x10e7
posted on September 6, 2015 
Physics
Yes, if you go back to the post I don't understand the sqart or that whole equation at all, grade 11 physics! Sorry for replying late btw
posted on January 27, 2015 
Physics
I am sorry I do not know what sqart is, and also sorry for not replying sooner bobpursley, but I tried to solve it myself and this is what I did, perhaps I used sqart? Because V = D/T I decided to find Dx and Dy Found Dy using: D= Vi(1.25) + 1/2(9.8)1.25^2
posted on January 27, 2015 
Materials Science
I can't understand the epsilon r, could you write it again? because it seems  nu ?(epsilon h  Epsilon L/E) and this is not unitless
posted on October 8, 2014 
Science
Not B and not D.
posted on July 15, 2014 
psychology
I am pretty sure that it is not duplicate and it is not explain.
posted on July 15, 2014