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March 28, 2017

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physics
A typical baseball has mass of 150 grams. Suppose a batter hits a fastball pitched to him at 92 mph (which is about 40.89 m/s). After contact, the ball's speed is measured as 104 mph (which is about 46.22 m/s) directly back at the pitcher (who is able to duck out of the way, ...
May 12, 2013 by Anonymous

English
Word box abominable bumbling consequence delude dole engulf foil formulate initiative memento nonconformist null and void panorama posterity pry refurbish resourceful rigorous subsequent unerring 1. Professional baseball players get themselves into shape for the upcoming ...
February 16, 2013 by Jerald

physics
In the Earth–Moon system, there is a point where the gravitational forces balance. This point is known as the L1 point where the L stands for Lagrange, a famous French mathematician. Assume that the mass of the Moon is 1/81 that of the Earth. (a) At what point, on a line ...
October 30, 2011 by mymi

English
Once I'm filled I can point the way, When I'm empty noting moves me, I have two skins one without the one within. Who/what I'm I ? Neen help soving this riddle please help me. Thanks.
September 2, 2007 by Maquesha

chemistry
a solution (S) is prepared by dissolving 50.0 g calcium chloride in 250 ml volumetric flask wich is then filled with distilled water up to the line mark. calculate the molar concentration of solution (S)
March 10, 2013 by alia

statistics
A crane is designed in such a way that it can lift a maximum load of 2750kg.Is the crane overload if the container is filled with 50 bags of cement 40kg each and 5 machine of average 100kg?
November 10, 2016 by Ana

Physics
A charge q1 = 5.00nC is placed at the origin of an xy-coordinate system, and a charge q2 = -2.00nC is placed on the positive x axis at x= 4.00cm . If a third charge q3 = 6.50nC is now placed at the point x= 4.00cm , y= 3.00cm find the x and y components of the total force ...
September 7, 2014 by Molly

Chemistry
Which of the following is NOT true of colligative properties? Colligative properties are... A. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. B. dependent on the mass of solute present. C. independent of the chemical ...
August 8, 2008 by Blair

chem
Which of the following is NOT true of colligative properties? Colligative properties are... A. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. B. dependent on the mass of solute present. C. independent of the chemical ...
August 8, 2008 by sonia

chem lab (webwork)
Which of the following is NOT true of colligative properties? Colligative properties are... A. dependent on the mass of solute present. B. independent of the chemical identity of the solute. C. responsible for lowering the vapor pressure of a solution versus the vapor pressure...
April 3, 2010 by UCI studebt

C++ Programming
I NEED HELP WITH MY CODE!!! it won't compile right The formula for finding the force of gravity between two objects is Force = grav * (mass1 * mass2) / (radius * radius), where Force = the force of gravity between the two objects, grav = the universal gravitation constant (6....
February 13, 2008 by sonnysn

Physics
I push a stack of six books (each weighting 4 kg) horizontally across a table to the right with a kinetic coefficient of friction uk = 0.5. I apply a force of 120 N. a) What is the acceleration of the books? b) what is the force of the rightmost book on its neighbor? Next, I ...
July 11, 2014 by Sophie

english
can anyone tell me if this is correct? Read the following sentences, and focus on the grammar area specified on the top line before the statement then select the correct sentence (a or b) Vague pronouns - B 25a. Air pollution normally increases along with population growth. ...
July 19, 2008 by Anonymous

mechanics
A 60 Kg skier leaves the end of a ski-jump ramp with a velocity of 24m/s directed 25° above the horizontal. Suppose that as a result of air drag the skier returns to the ground with a speed of 22 m/s, landing 14m vertically below the end of the ramp. From the launch to the ...
March 27, 2011 by Anonymous

Math
Charlie is late for the hot-air balloon rally. He stops his car 65 meters from a hot-air balloon already in flight. While Charlie watches the balloon ascend, he tilts his eyes up from 28º until he is watching at an angle of elevation of 66º. Find the vertical distance to the...
October 6, 2014 by TeeKay

Physics please check
A person who weighs 655 N is riding a 98 N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 8.70 X 10^5 Pa, what is the area of contact between each tire and the ground? P=F/A A=F/P A=...
April 8, 2007 by Mary

PHYSICS
The total resistance is 13.0 kΩ, and the battery's emf is 28.0 V. If the time constant is measured to be 34.0 µs . Calculate the total capacitance of the circuit. Calculate the time it takes for the voltage across the resistor to reach 11.0 V after the switch is closed. ...
February 29, 2012 by Nade

Physics help?
The total resistance is 13.0 kΩ, and the battery's emf is 28.0 V. If the time constant is measured to be 34.0 µs . Calculate the total capacitance of the circuit. Calculate the time it takes for the voltage across the resistor to reach 11.0 V after the switch is closed. ...
February 29, 2012 by Nade

math
a closed tin is in the shape of acylinder of diameter 10cm and height 15cm.use the value 3.14 for pie to find a)the total surface area of the tin b)the value of the tin to the nearest naira if tin plate cost 450 per m2
May 8, 2016 by ore

Physics
The question is: "A block of ice at 0oC is dropped from a height that causes it to completely melt upon impact. Assume that there is no air resistance and that all the energy goes into melting the ice. Show that the height necessary for this to occur is at least 34 km." I know...
September 23, 2009 by Ceres

physics
a block weighing 50 N rests on an inclined plane. its weight is a force directed vertically downward, a37 degree angel find the componants of the force parallel to the surface of the plane and perpendicular to it
January 1, 2008 by melissa

physics
two pellets each with a charge of 1 microcoulomb 10 to the negative 6 c are located 3 cm apart what is the electrical force between them what would be the mass of a object that would experience the same force in the earths gradational field
February 2, 2009 by christina

physics
Two people push on a 4 kg object. One force is 60N, north. The second force is 40N, east. Find the acceleration of the object. Ignore friction. The answer is 18m/s/s at 53.31 degrees.......but i don't know how to get to it.
September 11, 2010 by Wendy

physics
The force exerted by the wind on the sails of a sailboat is 340 N north. The water exerts a force of 150 N east. If the boat (including its crew) has a mass of 340 kg, what are the magnitude and direction of its acceleration?
September 16, 2010 by bobby

applied maths
a force 'P' acts on a bodyat an angle theta to a horizontal line 'OX'. P,together with a pull of 1.5kn at 30degrees to, and below 'OX', has the same effect as a force of 5kn at 45degrees to and above 'OX'. i'm so confused!
September 19, 2010 by Rob

physics
1. A man pulls a 300 N object across a horizontal surface using a 100 N force applied at a 35° angle. What is the normal force? If the object is pulled at constant speed, what is the coefficient of friction
October 13, 2010 by devin boutte

Physics
In unit-vector notation, what is the torque about the origin on a particle located at coordinates (0, -4.90 m, 4.04 m) due to (a) force 1 with components F1x = 2.67 N and F1y = F1z = 0, and (b) force 2 with components F2x = 0, F2y = 1.23 N, F2z = 5.41 N?
November 17, 2011 by Em

science
Three lead balls of mass m1 = 14 kg, m2 = 26 kg, and m3 = 8.7 kg are arranged as shown in the figure below. Find the total gravitational force exerted by balls 1 and 2 on ball 3. Be sure to give the magnitude and the direction of this force.
October 21, 2012 by jane

Physics
How far apart must two protons be if the magnitude of the electrostatic force acting on either one due to the other is equal to the magnitude of the gravitaional force on a proton at the earth's surface?
November 17, 2012 by Guy

Physics
In unit-vector notation, what is the torque about the origin on a particle located at coordinates (0, -2.24 m, 9.78 m) due to (a) force 1 with components F1x = 2.70 N and F1y = F1z = 0, and (b) force 2 with components F2x = 0, F2y = 2.92 N, F2z = 4.02 N?
March 3, 2013 by Anonymous

Physics
An object (mass 3.2kg ) slides upward on a vertical wall at constant velocity when a force F of 54N acts on it at an angle of 60∘ to the horizontal. N = 27 N Determine the force of kinetic friction on the object.
October 3, 2013 by Cheech

Physics
A boat is being towed through a canal by means of ropes which make a 45 degree angle to each other. If a force of 75N is applied to the rope, what is the resultant force pulling the boat forward?
November 3, 2013 by Christina

Physics-intro
A trailer has a mass of 5000 kg. It is pulled by a truck with a force of 8750 N. If the frictional force is 2000 N, what is its acceleration? Would I need to subtract both forces then divide the answer by the mass?
October 6, 2014 by Ben Green

physical science
calculate the force output by the larger piston of a hydraulic lift when a force of 700 newtons is excerted on the smaller piston and the areas of the two pistons are 20cm and 950cm squared.
October 21, 2014 by sara

physics
a boom 4.7 meters,10000 kg, 20 degree angle, find torqe on the pivot i fond force=10000x9.81= 98100 N perpindiclar force = 33552 N torqe = 4.7x33552 = 167695 Nm i am told this is wrong
November 14, 2014 by andrea

Physics Dynamics
A sled of mass m = 70.0 kg is being pulled horizontally on a frictionless floor by a force F = 420 N that makes an angle 20.0o above the horizontal. What is the magnitude of the normal force applied by the ground on the sled?
February 12, 2015 by Anonymous

Physics
A car, starting from rest, accelerates in the positive x direction. It has a mass of 1.10 x 103 kg and maintains an acceleration of 4.6 m/s^2 for 5 s. Assume that a single horizontal force accelerates the vehicle. Determine the power generated by this force.
March 18, 2015 by Amiel

PHYSICS HELP PLEASE!!
A tangential force acts on the rim of a 2.0 kilogram disk-shaped wheel (0.50 m radius) and gives the wheel an angular acceleration of 4.8 rad/s^2. Neglect friction and find the magnitude of the force
April 5, 2015 by Chris

Physics
Using GRAPHICAL METHOD, find the vector sum of a force of 20 N directed 60 degrees east of north and a force of 60 N directed west? Please show all steps and equations used.
September 19, 2015 by Alyssa

Science
A truck of mass 2000kg moving on a highway experiences an average frictional force of 800N. If it's speed increases from 25m/s to 35m/s over a distance of 500m what is the force generated by the truck .
February 15, 2017 by Jitender

science
A truck of mass 2000 kg moving on a highway experience an average frictional force 800 N. il its speed increase from 25m / s to 35m/s over a distance of 500m. What is the force generated by truck
March 15, 2017 by gobind

Physics
A harpsichord string of length 1.50 m and linear mass density 26.0 mg/m vibrates at a (fundamental) frequency of 460.0 Hz. (a) What is the speed of the transverse string waves? m/s (b) What is the tension? N (c) What are the wavelength and frequency of the sound wave in air ...
April 13, 2012 by Reza

AP Chemistry
Part 1 of 3: An apparatus consists of a 2 L flask containing nitrogen gas at 30 degrees C and 758 kPa, joined by a valve to a 11 L flask containing argon gas at 30 degrees C and 49.7 kPa. The valve is opened and the gases mix. What is the partial pressure of nitrogen after ...
February 16, 2014 by Gabriella

physics
A 6.30kg block is pushed 9.50m up a smooth 35.0∘ inclined plane by a horizontal force of 77.0N . If the initial speed of the block is 3.15m/s up the plane. What is the initial kinetic energy of the block, the work done by the 77.0N force, the work done by gravity, the ...
January 27, 2014 by Keke

Physics
The figure shows four electrical charges located at the corners of a rectangle. Like charges, you will recall, repel each other while opposite charges attract. Charge B exerts a repulsive force (directly away from B) on charge A of 4.2 . Charge C exerts an attractive force (...
September 3, 2010 by Anonymous

Accounting
The following information is necessary to compute the net assets (stockholders' equity) and book value per share of common stock for Rothchild Corporation: 8% cumulative preferred stock, $100 par $ 200,000 Common stock, $5 par, authorized 100,000 shares, issued 60,000 shares ...
December 9, 2011 by kate

Chemistry
Imagine that you have a 7.00 gas tank and a 3.00 gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 145 , to what pressure should you fill the ...
September 21, 2008 by George

Chemistry
Imagine that you have a 7.00 gas tank and a 3.00 gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 145 , to what pressure should you fill the ...
September 21, 2008 by George

Geog-Adiabatic rates
Given a lapse rate of 3 degrees C/1000 meters and a temp of 20 degrees C at 0 meters: A.What is the air sitting at 3,000 meters elevation?___degrees C B.If a sample of air were lifted from 0 meters to 3,000 meters elevation, what would its new temp be?_____C(Assume no ...
March 22, 2008 by Sarah

Adiabatic rates(Geography)
Given a lapse rate of 3 degrees C/1000 meters and a temp of 20 degrees C at 0 meters: A.What is the air sitting at 3,000 meters elevation?___degrees C B.If a sample of air were lifted from 0 meters to 3,000 meters elevation, what would its new temp be?_____C(Assume no ...
March 23, 2008 by Sarah

Intro. Physics!!!
1------- A -10 uC charge is placed 0.20 m away from an unknown charge. The force between the two charges is found to be attractive and has a value of 9.0 N. What is the magnitude and sign of the other charge? 2-------- A -5 uC charge is a distance of 12 cm from a 7 uC charge. ...
January 24, 2015 by Anonymous

science
A book is on top of a table. Earth's gravity exerts a constant force of 15N on the book. Why does the book not move as a result of this force?
March 24, 2012 by Josie

physics
A steady 50 N horizontal force is applied to a 10 kg object on a table. The object slides against a friction force of 35 N. Calculate the acceleration of the object in m/s.
February 6, 2013 by tash

AP Chemistry
What is the value of w (work) when 1.3 moles of H2 expands from 25 liters to 50 liters against a constant external pressure of 1 atm, then expands further from 50 to 100 liters against a constant external pressure of 0.1 atm? Answer in calories. Answer in units of cal I know ...
January 6, 2015 by Ethan

physics
a horizontal force of 95 N is applied to 60 kg crate on rough , level surface. if crate accelerates at 1.20 m/s2 , what is magnitude of the force of kinetic friction acting on the crate?
February 28, 2010 by jerry

physics30sh
a 1000 kg car engine exerts a force of 3000 N while the car accelerates from 20 m/s to 30 m/s is 5.0 seconds. How much force of resistance does the car experience?
October 15, 2010 by Michael

physics
Need equation: Mass of 4.24 kg acted on by external force that reduces velocity from 8.5 m/sec to 4.1 m/sec in 3.0 sec. Find magnitude of the retarding force?
November 9, 2010 by Abby

physics
suppose the you push with a 40-N horizontal force on a 4-kg mass resting on a horizontal surface against a horizontal friction force of 24N. show that the acceleration is 4 m/s2
January 31, 2012 by Anonymous

physics
A 8.01-nC charge is located 1.95 m from a 4.06-nC point charge. (a) Find the magnitude of the electrostatic force that one charge exerts on the other. (b) Is the force attractive or repulsive?
May 5, 2012 by andrew

Physics
The brakes of a truck cause it to slow down by applying a retarding force of 8740 N to the truck over a distance of 1130 m. What is the work done by this force on the truck?
November 14, 2012 by Emily

physics
The brakes of a truck cause it to slow down by applying a retarding force of 2350 N to the truck over a distance of 817 m. What is the work done by this force on the truck?
July 8, 2013 by summer

Physics
A 15 kg sled experiences an applied force of 5.5 N [north] and an opposing frictional force of 2.5 N [south]. If the sled starts from rest, what will be the velocity of the sled after 4.0 s?
October 26, 2014 by Matthew

Science
Susie decides to pull on a 1.5kg toy (horizontally) with a force of 25N. Friction acts against the toy with a force of 6n. What is the acceleration of the toy?
November 4, 2014 by Paula

Physics
The brakes of a truck cause it to slow down by applying a retarding force of 7760 N to the truck over a distance of 870 m. What is the work done by this force on the truck?
March 1, 2015 by Chris

physics
John pushes on a 400 kg refrigerator with a force of 800 N. While sliding a friction force of 300 N acts on the refrigerator. What is the acceleration of this refrigerator?
January 23, 2016 by vincent

Physics
Find the magnitude of the force needed to accelerate a 150 g mass with a = -0.250 m/s2 i^+0.675 m/s2 j^. Find the direction of this force? Need to find F and theta.
October 8, 2016 by Emma

AP Statistics
Do the samples appear to be from the same population? Why or why not? Support your answer with numerical facts and convincing reasons and explanations Chemical distribution stats: Five # summary: (2.29816, 2.29869, 2.299152, 2.30074) Mean: 2.299706 Standard deviation: 0.001313...
October 7, 2015 by Ashley

physics
A class of 11 students taking an exam has a power output per student of 122 W. Assume that the initial temperature of the room is 18.8oC and that its dimensions are 6.40 m by 14.5 m by 3.50 m. What is the temperature of the room at the end of 54.0 min if all the heat remains ...
November 10, 2012 by Chad

chemistry
are this 2 equations the same NIE? and if not how come? Write a net ionic equation for the reaction that occurs when aqueous solutions of ammonia and acetic acid are combined. Write a net ionic equation for the reaction that occurs when aqueous solutions of acetic acid and ...
November 17, 2011 by savannah

AP Chemistry
The equilibrium constant for the reaction PCl3(g) + Cl2(g)<-> PCl5(g) is 35000 at 760◦C. At equilibrium, the partial pressure of PCl5 was 110 bar and that of PCl3 was 9.98 bar. Calculate the equilibrium partial pressure of Cl2. Answer in units of bar
November 27, 2013 by Gabriella

Chemistry (Check)
A 30.0 L sample of nitrogen inside a rigid, metal container at 20.0 degrees C is placed inside an oven whose temperature is 50.0 degrees D. The pressure inside the container at 20.0 degrees C was at 3.00 atm. What is the pressure of the nitrogen after its temperature is ...
November 13, 2015 by Anonymous

Physics
A 300 kg piano slides 4.4 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. (a) Calculate the magnitude of the force exerted by the man. (b) Calculate the work ...
March 21, 2014 by Hope

Physics
A 300 kg piano slides 4.4 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40.(a) Calculate the magnitude of the force exerted by the man.(b) Calculate the work ...
March 21, 2014 by Hope

chemistry
assuming the volume of h2so4 needed to completely neutralize naoh of concentration 0.2m is 23.50ml take the volume of base to be 2ml question write a balance equation for the neutralization calculate the concentration of the acid what indicator can be used for the analysis and...
May 15, 2016 by chiemelie

chemistry
Which of the following is NOT true of colligative properties? Colligative properties are... A. dependent on the mass of solute present. B. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. C. independent of the chemical ...
April 7, 2008 by david

physics
How is pressure applied in the following areas 1. Measurement of blood pressure using spygmomanometer. 2.Giving injections 3.Administering intravenous transfusion 4.Giving oxygen in the ward and operation theater 5.Administering blood transfusion 6.Sucking excess blood after ...
February 11, 2014 by Williams

Chemistry
A solution contains naphthalene (C10H8) dissolved in hexane (C6H14) at a concentration of 15.00% naphthalene by mass. Calculate the vapor pressure at 25 ∘C of hexane above the solution. The vapor pressure of pure hexane at 25 ∘C is 151 torr. I keep getting 168 torr...
September 20, 2014 by Kaitlyn

University Physics
In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the overhead view of Fig. 5-33. The tire remains stationary in spite of the three pulls. Alex pulls withe force Fa of magnitude 220N and Charles pulls with ...
March 14, 2013 by Brandon Ochoa

Physics
Two ropes attached to a young tree are pulled by two landscapers. Rope 1 is pulled with 267 N of force at an angle of 23 degrees north of east and Rope 2 is pulled with 377 N of force due west. a) Determine the magnitude and direction of the resultant force acting on the tree ...
February 3, 2016 by Beth

Physics
Two ropes attached to a young tree are pulled by two landscapers. Rope 1 is pulled with 267 N of force at an angle of 23 degrees north of east and Rope 2 is pulled with 377 N of force due west. a) Determine the magnitude and direction of the resultant force acting on the tree ...
February 4, 2016 by Beth

greek mythology
1.All the following were writers of ancient Greek plays and poetry exept a.Homer b.Sophocles c.Joseph Campbell 2.Chaos gave birth to the following exept a.Uranus(heaven) b.Tartarus(under earth) c.Gaea(earth) 3.Gaea gave birth to the following exept a.mountains b.Pontus(sea) c....
January 22, 2007 by Josh

science help
The two tables below give the relative-risk of developing a stroke, in relation to blood pressure and body mass index. The data are based on a population of men from the USA. The values in the first table are given in comparison with the total population. The values in the ...
November 6, 2013 by sam ????????????????????

physics
If the relative humidity is 66.8% in the middle of a spring day in auckland when the temperature is 15 degrees celsius, What will the relative humidity be in the evening when the temperature falls to 10 degrees celius (Assume the partial pressure of water in atmosphere remain ...
March 26, 2010 by Steve

Physics
A force of magnitude 7.50 {\rm N} pushes three boxes with masses m_1 = 1.30\,{\rm{kg}},m_2 = 3.20\,{\rm{kg}}, and m_3 = 4.90\,{\rm{kg}}, as shown in the figure(Figure 1) . (Ignore friction.) Find the magnitude of the contact force between boxes 1 and 2, and Find the magnitude ...
February 16, 2013 by Adnan

physics
A man tries to push a crate of 8kg across a rough surface. The static friction coefficient is 0.6 and the kinetic friction coefficient is 0.4. Calculate the friction force exerted on the crate if: a) a horizontal force of 45 N is exerted on the crate and b) a horizontal force ...
February 22, 2016 by Stressed out

science URGENT so need help
PLS HELP ASAP True or False 1. If a 40 kg person is accelerating at 10 m/s2, then the magnitude of the force acting on him or her is 400 N. (1 point) true false Multiple Choice 2. How much force is needed to make a 60 kg object accelerate at a rate of 2.0 m/s2? (1 point) 62 N ...
March 13, 2014 by TTR+S<3

spelling
okay. this is a total toughie. 14 letter word, letters are ; LBEIYPORISSNTI. it is one word and so far noone can get it. help...
January 22, 2007 by schoolgirl12 :-?

p
A newly planted tree is supported against the wind by a rope tied to a stake in the ground, as shown in the figure below. The force of the wind, though distributed over the tree, is equivalent to a single force F, as shown in the figure. Find the tension in the rope. Assume ...
March 26, 2012 by JOHN

physics
A Navy jet (see the figure) with a weight of 219 kN requires an airspeed of 87 m/s for liftoff. The engine develops a maximum force of 100 kN, but that is insufficient for reaching takeoff speed in the 85 m runway available on an aircraft carrier. What minimum force (assumed ...
February 25, 2015 by John

Math 6 Help!!!
Danny poured 78 liters of water into containers X, Y, and Z. The ratio of the volume of water in Container X to the volume of water in Container Y is 5 : 2. The ratio of the volume of water in Container Y to the volume of water in Container Z is 8 : 11. a) How much water was ...
December 11, 2012 by Rod

Language Arts
Passage A Avalanches are caused by a variety of conditions. When the temperature is cold and snow falls, the snowsticks to the ground. However, when the air temperature changes, the snow may slide away in pieces or slabs. Basically an avalanch happens when the gravity of snow ...
December 1, 2014 by Callie

chemistry
A 375 g piece of iron was heated to 975 °C and then quenched in a bucket containing one gallon of water at 20 °C. What was the temperature of the water after the iron and the water came to thermal equilibrium?
April 10, 2011 by Whitney

chemistry
A 375 g piece of iron was heated to 975 °C and then quenched in a bucket containing one gallon of water at 20 °C. What was the temperature of the water after the iron and the water came to thermal equilibrium?
April 10, 2011 by Whitney

Chemistry
A flask partially full of liquid water is heated to boiling and capped cold water is poured over the flask. The water boils even more vigorously explain
April 11, 2011 by Noel

chemistry
For the reaction below, Kp = 1.16 at 800.°C. CaCO3(s) CaO(s) + CO2(g) If a 21.7-g sample of CaCO3 is put into a 10.6 L container and heated to 800°C, what percentage by mass of the CaCO3 will react to reach equilibrium?
February 3, 2013 by gina

chemistry
For the reaction below, Kp = 1.16 at 800.°C. CaCO3(s) CaO(s) + CO2(g) If a 21.7-g sample of CaCO3 is put into a 10.6 L container and heated to 800°C, what percentage by mass of the CaCO3 will react to reach equilibrium?
February 3, 2013 by gina

math
Sam has 5 red shirts 2 pink shirts and 3 yellow shirts. If she closed her eyes and chooses one shirt at random to wear on Compliments day, what is the probability that she will NOT choose a yellow shirt? Thank you helpers :)
February 1, 2012 by Brianna

Calculus
Consider the closed curve in the day plane: 2x^2-2xy+y^3=14 a) show that dy/dx=2y-4x/3y^2-2x (I got this part) b) find equation lines to the curve when y=2 c) if the point (2.5, k) is on the curve, use part b to find the best approximation of the value of k
October 20, 2014 by Marie

physics
A scuba diver must decompress after a deep dive to allow excess nitrogen to exit safely from his bloodstream. The length of time required for decompression depends on the total change in pressure that the diver experienced. Find this total change in pressure for a diver who ...
November 27, 2012 by phillip

physics
when excerising using a spring you pull the spring 0.30m with a force of 365N. What distance will the spring stretch from its zero position if you applied a force of 400N?
October 14, 2007 by Tabitha

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