Friday
September 4, 2015

Posts by Lola


Total # Posts: 527

math
Am i correct? 90° ferenhight = 33° celcious
August 31, 2015

Chemistry
All Brønsted-Lowry acids A. are aqueous solutions. B. can act as Arrhenius acids. C. donate protons. D. all of the above I think it is D, but I also think it is c can you please tell me if either of these answers are right thanks
August 11, 2015

Chemistry
All Brønsted-Lowry acids A. are aqueous solutions. B. can act as Arrhenius acids. C. donate protons. D. all of the above I am a little confused. I think it is D, but I'm second guessing myself with C
August 11, 2015

physics
two charges, -16uC and +4uC, are separated by three meters. a) Where along the line through the charges is the electric field zero? b) What is the force on a 14uC charge place there? uC = microCoulombs for a), would it be 16+ -4? Thank you!
July 29, 2015

physics
never mind! I got it! =) thanks guys!
July 5, 2015

physics
A rifle fires a 2.11 10-2-kg pellet straight upward, because the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 8.37 10-2 m from its unstrained length. The pellet rises to a maximum height ...
July 5, 2015

physics
An 0.90 kg object is attached to one end of a spring, and the system is set into simple harmonic motion. The displacement x of the object as a function of time is shown in the drawing. With the aid of these data, determine the following values. I got a,b,d,e right. for C, I ...
July 4, 2015

physics
Damon, help me!!! =(
July 4, 2015

physics
When responding to sound, the human eardrum vibrates about its equilibrium position. Suppose an eardrum is vibrating with an amplitude of 5.60 10-7 m and a maximum speed of 2.82 10-3 m/s. I don't see how A and a, is given. =/
July 4, 2015

physics
thank you! =)
July 4, 2015

physics
A hand exerciser utilizes a coiled spring. A force of 82.0 N is required to compress the string by 0.0191 m. Determine the force needed to compress the spring by 0.0520 m.
July 4, 2015

physics
i got it! thank you!! =)
July 2, 2015

physics
please help me!
July 2, 2015

physics
Physics Genius! please let me! Three objects lie in the x, y plane. Each rotates about the z axis with an angular speed of 6.12 rad/s. The mass m of each object and its perpendicular distance r from the z axis are as follows: (1) m1 = 6.36 kg and r1 = 2.20 m, (2) m2 = 3.92 kg ...
July 2, 2015

physics
A ladder (ℓL = 7.50 m) of weight WL = 350 N leans against a smooth vertical wall. The term "smooth" means that the wall can exert only a normal force directed perpendicular to the wall and cannot exert a frictional force parallel to it. A firefighter, whose ...
July 2, 2015

physics
A motorcyclist is traveling along a road and accelerates for 4.45 s to pass another cyclist. The angular acceleration of each wheel is +6.35 rad/s2, and, just after passing, the angular velocity of each wheel is +75.6 rad/s, where the plus signs indicate counterclockwise ...
June 28, 2015

physics
The drive propeller of a ship starts from rest and accelerates at 2.95 10-3 rad/s2 for 2.05 103 s. For the next 1.90 103 s the propeller rotates at a constant angular speed. Then it decelerates at 2.30 10-3 rad/s2 until it slows (without reversing direction) to an angular ...
June 28, 2015

physics
I keep on getting the second part wrong. Can you please tell me where I messed up? Thank you. The lead female character in the movie Diamonds Are Forever is standing at the edge of an offshore oil rig. As she fires the gun, she is driven back over the edge and into the sea. ...
June 26, 2015

Biology ( Ms.Sue help)
They can pass down either an A or B allele, which would mean their child could only be A, B, or AB. If the other parent is type O, the child's blood type will be the allele he/she got from the AB parent. A child can only be O if it inherits an O allele from BOTH parents.
June 25, 2015

physics
I have no idea. Please help. Thank you. The drawing shows a sulfur dioxide molecule. It consists of two oxygen atoms and a sulfur atom. A sulfur atom is twice as massive as an oxygen atom. Using this information and the data provided in the drawing, find (a) the x coordinate ...
June 25, 2015

physics
I have no way to solve this question. help me please The drawing shows a sulfur dioxide molecule. It consists of two oxygen atoms and a sulfur atom. A sulfur atom is twice as massive as an oxygen atom. Using this information and the data provided in the drawing, find (a) the x...
June 24, 2015

physics
A projectile of mass 1.000 kg is shot straight up with an initial speed of 23.0 m/s. (a) How high would it go if there were no air resistance? i got 26.99, which is correct (b) If the projectile rises to a maximum height of only 17.8 m, determine the magnitude of the average ...
June 21, 2015

physics
The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. The other box is heavier and rests on a ramp that is less steep. The boxes are released from rest at A and allowed to slide down the ramps. The two boxes have ...
June 21, 2015

physics
Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is thirty-four times that of satellite B. Find the ratio (TA/TB) of the periods of the satellites. Thank you!
June 21, 2015

physics
A 30-kg girl is bouncing on a trampoline. During a certain interval after she leaves the surface of the trampoline, her kinetic energy decreases to 205 J from 435 J. How high does she rise during this interval? Neglect air resistance.
June 21, 2015

physics
A 54.5-kg skateboarder starts out with a speed of 1.95 m/s. He does +80.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -265 J of work on him. In both cases, the forces doing the work are nonconservative. The final speed of the ...
June 21, 2015

physics
A 50-kg box is being pushed a distance of 6.4 m across the floor by a force P with arrow whose magnitude is 154 N. The force P with arrow is parallel to the displacement of the box. The coefficient of kinetic friction is 0.24. Determine the work done on the box by each of the ...
June 21, 2015

Chemistry
Determine the entropy change when 1.80 mol of HBr(g) condenses at atmospheric pressure? I got that DeltaS fus = 12.922J/(k*mol) Delta S Vapour = 93.475J/(K*mol) the only thing I don't get is the entropy change when 1.80 mol of HBr(g) condenses at atmospheric pressure. How ...
May 27, 2015

Chemistry
what is the freezing point of an aqueous solution that boils at 102.1 C? Kf=1.86 Kb=0.512 102.1-100.0=2.1 2.1/0.512=4.10 4.10*1.86=7.62 C 7.62 C Is this correct?
May 22, 2015

L A/The Giver
The answer is C. Jonas escapes and is on the run with Gabriel. Falling action does mean when the story is calm, but it doesn't nessarly mean that. It is the ending of the story... What happened at the end.
May 20, 2015

Calculus
What is the derivative of tan(1-x)^(1/2)?
May 6, 2015

Language Arts
These are all wrong! The answers are not correct.
April 23, 2015

Math
Isn't 51 divisible by 3 and 17?
April 22, 2015

Math
Ohhhh! Thank you!
April 22, 2015

Math
I don't really understand that, doesn't b have a five in there?
April 22, 2015

Math
Without using a calculator, decide which of these numbers divide into 2^5 * 3^9 * 7^2 * 13^5 8 17^4 * 19 with no remainder. Explain how you know. a) 2^4 * 3^8 * 7^2 * 13^4 * 17^4 * b) 2^5 * 3^2 * 5 * 7^2* 17 c) 2^4 * 13^4 * 17^4 * 19^4 d) 2^2 * 3^5 * 7 * 13^3 * 17^2 * 19
April 22, 2015

Life orientation
Factors that could threaten or limit core functions of the media
April 4, 2015

Math
So, my teacher wants me to sketch the graph of a system of inequalities but I'm not sure how. Can someone help me? Thank you! 3x + 2y < 6 x > 0 y > 0
March 12, 2015

AP Chem
Do i use Ka or Kb?
March 9, 2015

AP Chem
What is the ph of a .05 L solution containing .075 mol NH3 and 6.80 g of NH4+ when .025 L of 2 M is added to it? Kb= 1.8 x10^-5
March 9, 2015

AP CHEM LAB
How much .25 molar NAOH would you need to add to 50 mL of 2.85 molar HCl to reach the equivalence point?
March 3, 2015

Chemistry Equilibrium
1.15 g oh h2O (density 1.00 g/ml) is introduced into an empty 1.00 L container. The seled container is heated to 412 K and .150 moles of O2 (g) is present at equilibrium. A. Wrte the equilibrium expression for the reaction above. B. Calculate the equilibrium concentration (in ...
February 26, 2015

Science
A boy and girl sit on a seesaw of length 4m, balanced at its center. The girl sits at the far end and has a mass of 50kg. The boy is twice as heavy as the girl, and therefore sits midway between his end and the center. Then the girl is given a bag of oranges weighing 5kg, and ...
February 23, 2015

PLEASE CHEM
sorry this is in basic solution
February 14, 2015

PLEASE CHEM
wouldnt h2o be on the other side because you orignally have 2h20 on the products and one h20 in the reactants so cancelling them out would make one h20 on the products side
February 14, 2015

PLEASE CHEM
balance the redox reaction NO2^- + Ag^+ = NO3^- + Ag
February 14, 2015

algebra
Translate into algebraic exxpression one third of difference betwen 6 andp is added to 8
February 13, 2015

Algebra
translate the give fhrase into algebraic expresion 7 less than sum of 3 and x divided by 5
February 13, 2015

Math
Directions: Find all solutions of the equation in the interval (0, 2pi) sin x/2=1-cosx
February 3, 2015

chemistry
C6H12 = 9O2 --> 6CO2 = 6H2O + 3,690 kJ *Personally Balanced* What quantity of heat is produced if 32g of cyclohexane react with 95 L of oxygen at STP? *My work so far is below* 95L*(1 mol O2/22.4L) = 4.2 mol O2 What would be the next motive?
January 21, 2015

social studies
i think idk
December 3, 2014

biology
which is true about the inside of a cell? -the inside of an animal cell contains structures that carry out specific jobs for the cell, but no water or molecules dissolved in water -the inside of an animal cell contains water, molecules dissolved in the water and structures ...
December 1, 2014

math
how i make triangular prism,the dimensions are 6 unit base and 6 unit height,but the entire prism has height of 15 unit
November 25, 2014

Math Help
The number y of daily fee golf facilities in the United States from 1995 to 2003 can be represented by the following model where t represents the year with t = 5 corresponding to 1995. y=4381+1883.6lnt 5=t=13 During which year did the number of daily fee golf facilities reach ...
November 12, 2014

chemistry
The reaction between sodium hydroxide and hydrobromic acid is represented in the equation below: OH- + H+ -> H2O A 62.5 mL sample of 1.86 M NaOH at 22.5 deg Celsius was mixed with 62.5 mL sample of 1.86 M of HBr at 22.5 deg Celsius in a coffee cup calorimeter. The ...
November 2, 2014

Organic Chemistry
Calculate the partition coefficient of caffeine in water/methylene chloride from the following data: 10.3 g/100 mL for methylene chloride and 2.04 g/100 mL for water. Using the same data a student follows our procedure and extracts the caffeine using 3 extractions of 7 mL of ...
October 31, 2014

Organic Chemistry
In a very controlled experiment, a student is sure that 0.500 grams of caffeine is dissolved in 125 mL of water. The student extracts the caffeine using a single extraction of 21 mL of methylene chloride. How much caffeine is in the methylene chloride? How much remains in the ...
October 31, 2014

Derivatives
Could you perhaps do one of the ones on the bottom that are not in fraction form, cause I have a hard time doing the ones that have cos,sin,sec, and tan in them.
October 22, 2014

Derivatives
Oh okayyyyyyyy, I see it now, thanks
October 22, 2014

Derivatives Help
..I'm not sure I understand
October 22, 2014

Derivatives
Can you help me find the derivative of these problems...Every time I try doing these I don't get the right answer. All of these are fractions; (x)/(2+x)= (x^2+3)/(x^3-2)= (2π)/(x^2-x)= These are not fractions; (3x^3/2 tanx)= (3x^1/2 sinx)= (4secx tanx)= (x^2 cotx)= (x...
October 22, 2014

english
no
October 9, 2014

english
I did read it! The article was about people from south america are illegally coming to america by passing the border of mexico to texas.Then it talks about solutions of making people stop coming and mini stories of people who illegaly did it
October 9, 2014

english
please give me an example please
October 9, 2014

english
lets say a article talks about crossing the border of mexico illegally. Maybe i could say this reminds me about going to a country bout on a airplane and then i would have to explain why i think this
October 9, 2014

english
i still dont understand
October 9, 2014

english
what does it mean when the question is asking you ¨what was something that ¨stuck with you¨ during the reading of this article? explain." thanks
October 9, 2014

Math
Can someone tell me if I have this right? Thanks! Question: P varies directly as Q can be written as P = kQ. True Or False. My answer: True
October 3, 2014

math
24 by 15
October 1, 2014

Physics I
Ok thank you.
September 21, 2014

Physics I
Isn't gravity going upward positive and if it's downward then it would be negative? That's what my teacher told me but I'm pretty sure he said the answer was D too.
September 21, 2014

Physics I
A ball has been thrown upward. Which of the following is true while the ball is on the way up, after the ball has been released, assuming no air resistance? a. The acceleration is upward. b. The acceleration is zero. c. The ball's speed increases by 9.81 m/s each second. d...
September 21, 2014

algebra
3143
September 11, 2014

biology
Please can i have a list of sone adaptive features of terrestrial plants. Please
September 9, 2014

chemistry
Please can i have a list of adaptive features of terrestrial plants. Please
September 9, 2014

Identify the regular verb or verb phrase
In the Middle Ages, students learned from priests and other church officials.
July 24, 2014

PHYSİC
A standard CD has a diameter of 12.0 cm, and a hole that is centered on the axis of symmetry and has a diameter of 1.50 cm. The CD’s thickness is 1.2 mm, and it's mass is 17 g. If a (very thin) pin extending through the hole of the CD suspends it in a vertical ...
July 12, 2014

Physics
A 1 kg hockey puck is sliding on the ice at 5m/s and stops on some dirt in 2 secs. I need to find the coefficient of kinetic friction. I found the acceleration being -2.5m/s^s (0-5m/s / 2s) Idk what to do next pleaseeee help
June 1, 2014

Chemistry
No other equations are provided however the question goes on to ask if enough N2O4(g) is placed in a container to achieve 1.00 atm of pressure at this temperature, predict what the final pressures of each of the gasses will be.
May 18, 2014

Chemistry
Please help! I can't seem to set this up right At any given temperature 2NO(g) + O2(g) <-> 2NO2 kp=1X10^4 2NO2(g) <-> N2O4 kp=1X10^-1 Find the kp 2NO(g) < -> O2(g) + N2(g) kp=?
May 18, 2014

chemistry
a 2.00 L ballon at 25 degrees celcius and 745mmHg floats on an altitude where the temperature is 10 degrees celcius and the air pressure is 700mmHg. what is the new volume othe balloon
May 8, 2014

life orientation
I don't knw
April 27, 2014

math
input:0;1;2;3 outpu2:4;2;0;-2 wht is the formula#stressed:|
April 21, 2014

math
the equation is y=2exponent(x)+2 determine the input value if y=34
April 21, 2014

trig/ vectors
Points C and D are directly across from each other on opposite banks of a river. A boat travels across the river directly from point c to point d at a speed of 12 mph. If the current of the river has a speed of 4 mph, at what angle, and speed, must the captain head to travel ...
April 13, 2014

fitness and health
I would say carrots
April 9, 2014

Statistics
1,037 it is simple math.
April 9, 2014

SCIENCE PLEASE HELP ME!!!!!!!! ASAP PLEASE PLEASE
it is A stupid
April 9, 2014

science(check answers)
anonymous is correct
March 31, 2014

Math
Find an Equation for the least squares line then use it to find the missing value. (400, 50) (500, 65) (500, 70) (600, 80) (700, 85) (800, 95) (550, Y) Interpolate I think the least squares line is y= .10538X+ 12.6923 Could someone verify and please instruct me how to complete...
March 20, 2014

Math: Statistics Least squares line
Find an equation of the least squares line, then use it to complete the table. X- 111 169 230 287 335 ? Y- 2 3 4 5 6 7 Extrapolation I missed the lesson on this and as far as I can tell I think the least squares line is y= .01764x+ .oo693 If anyone could verify my line and and...
March 19, 2014

math
a 5% acid solution is mixed with a 9% acid solution. How many ounces of each solution are needed to obtain 40 ounces of a 6% solution?
February 27, 2014

algebra
xdss
February 19, 2014

Science
Hey can you help me with those! :P
February 6, 2014

physics
An ideal gas has a pressure of 2.5 atm, a volume of 1.0 L at a temperature of 30.°C. How many molecules are there in the gas? 6.1 × 1023 6.0 × 1022 2.4 × 1022 2.3 × 1023
February 4, 2014

Physics
The molecular mass of oxygen molecules is 32, and the molecular mass of nitrogen molecules is 28. If these two gases are at the same temperature, the ratio of nitrogen's r m s speed to that of oxygen is: (8)1/2:(7)1/2 8:7 (7)1/2:(8)1/2 7:8
February 4, 2014

Physics
sadadfa
February 3, 2014

Math
Estimate the total number of years of service of 200 factory workers based on a sample size of n=5 where the years of service reported are 12, 8, 20, 5, 12
February 3, 2014

Math
In one hour, a factory packaged 150 boxes of light bulbs. Estimate the total number of defective light bulbs packaged that hour based on a sample of 8 boxes containing the following numbers of defective bulbs: 5, 3, 5, 1, 2, 9, 4, 3
February 3, 2014

Algebra 1A
What are the four steps for solving a problem?
January 29, 2014

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