# hey guys, i follow you up to the point of intergrating the final line. How would I intergrate [x^-2.e^-x] dx thx

49,088 questions, page 204-
## physics

In the absence of air resistance two balls are thrown upward from the same launch point. Ball A rises to a maximum height above the launch point that is four times greater than that of ball B. The launch speed of ball A is _______ times greater than that

*asked by Brantley on September 8, 2010* -
## MTH 156

If a number is increased by 37%, by what percent must it be decreased to obtain the original number? A carpeted living room and dining room area measures 32 ft by 10 ft. Mark decides to install wood flooring in the 12 ft by 10 ft dining room. By what

*asked by Cluless on November 26, 2010* -
## listening

I have problems listening what can I do to improve it before I go back to school? Here are some websites with good ideas: http://elc.polyu.edu.hk/ELSC/material/Listening/kListening.htm#II.%20SKILLS%20TO%20BETTER%20LISTENING

*asked by bobbluecow on September 5, 2006* -
## Physics

A roller coaster works by gravitational energy. The coaster car is pulled up to a high point and then released, rolling downwards on the track through all manners of curves and loops. I have a short roller coaster car that I pull up to the top of a hill of

*asked by Shin on May 6, 2013* -
## chemistry

0.5 L of a 0.30 M HCl solution is titrated with a solution of 0.6 M KOH. a)What is the pH before addition of KOH? b)What is the total number of moles of acid? c)What is the pH after addition of 125 mL of KOH solution? d)What volume of the KOH solution is

*asked by Joe on April 28, 2011* -
## music

1. Click the play button to listen to the audio sample. What is the texture of this music? (1 point) monophonic polyphonic homophonic quadraphonic 2. Choose the correct definition of timbre. (1 point) volume level of the music speed or pace of the music

*asked by v on January 9, 2017* -
## science

1.)a basketball momentarily changes shapes as it bounces off the floor. this is due to balanced forces acting on the ball. True (answer) false 2.) a ball slowing down as it roles across the carpet is an example of what ? (1 point) a.)balanced force

*asked by Hannah Marie on October 8, 2014* -
## Calculus

I was wondering if you would be able to check if my answers are correct: 1. An oil tank is being drained for cleaning. After t minutes there are v litres of oil left in the tank, where v(t)=40(20-t)^2, 00 (5/3+h)-(5/3)/h and my answer was 1/9. b) Determine

*asked by Sarah on April 10, 2014* -
## Algebra

I have an assignment to write an equation to point-slope form, then to standard form, and then to slope-intercept form. I have used the points (-2,-1) or (1,2), but I used (-2,-1). Now, I have the point-slope form of y + 1= 1(x + 2) and the standard form

*asked by Anonymous on December 6, 2013* -
## Stats

Exercise 6-8 The Downtown Parking Authority of Tampa, Florida, reported the following information for a sample of 235 customers on the number of hours cars are parked and the amount they are charged. Number of Hours Frequency Amount Charged 1 18 $3 2 33 7

*asked by Nicole on September 28, 2010* -
## chem

What does the concentration of the benzoic acid in the original liquid and the extracting liquid relate to after the extraction is completed? Answer a. The density of the original liquid. b. The density of the extracting liquid. c. The solubility of

*asked by alice on February 4, 2013* -
## Environmental Science

Your grandparents, who loves to garden, are thinking about buying a house in a country. Next weekend, they are going to look at two houses. One has a large garden that is part of a small farm that was abandoned 25 years ago. Use what you know about

*asked by Qiayamah on December 22, 2006* -
## Geometry

24. If the scale factor of two similar solids is 4:17, what is the ratio of their corresponding areas and volumes? (1 point) 4:289 and 17:4,913 8:34 and 12:51 16:289 and 64:4,913 64:4,913 and 16:289 25. The volumes of two similar solids are 1,728 m3 and

*asked by Lillylove on January 23, 2017* -
## Algebra

Jen was the leading scorer on her soccer team. She scored 120 goals and had 20 assists in her high school career. A. The number n of points awarded for goals is given by 2g where g is the number of goals scored. How many points did Jen earn for goals? B.

*asked by Incognito on August 14, 2017* -
## Math

Bob's frog can travel 6 inches per jump, Kim's frog can travel 9 inches, and Jack's frog can travel 13 inches. If the three frogs start off at point 0 inches, how many inches will it be to the next point that all three frogs touch?

*asked by Tasha on February 27, 2010* -
## precalculus applications

How do I find the equation of a sinusoidal curve from just knowing the lowest point and highest point of it? For example: A weight attached to the end of a long spring is bouncing up and down. If we do not worry about friction, its distance from the floor

*asked by Jimmy on March 21, 2008* -
## For MUFFY

You stated on Saturday that you understood my solution as far as part a) and b) were, so let me just recap what we did. (I will not repeat the actual question) My Solution: Suppose we label the point of contact P(x,y). I bet P is in the first quadrant. but

*asked by Reiny on October 5, 2009* -
## english

I need help writting a discussion on why the follow paragraph is effective including variety and rhythum of the author's writing:Individuals can be denied credit for a number of reasons. Individuals who are near limits on existing cards, have too much

*asked by lo on September 16, 2011* -
## Physics

A 1600 kg car traveling at 13.7 m/s to the south collides with a 4600 kg truck that is initially at rest at a stoplight. The car and truck stick together and move together after the collision. What is the final velocity of the two-vehicle mass? Assume that

*asked by help me! on December 5, 2014* -
## physics

if a piece of aluminum with mass 3.99g and a temperature of 100C are dropped into 10cm^3 of water at 21C, what will be the final temperature of the system? The specific heat of aluminium is .900J/gC... ok so i know that i set both equal to each other, but

*asked by garrick on April 22, 2009* -
## Physics

A subway train starts from rest at a station and accelerates at a rate of 1.50m/s^2 for 13.3s . It runs at constant speed for 71.0s and slows down at a rate of 3.48m/s^2 until it stops at the next station. Find the total distance covered. Express your

*asked by Kim on January 17, 2012* -
## Physics

A subway train starts from rest at a station and accelerates at a rate of 1.50m/s^2 for 13.3s . It runs at constant speed for 71.0s and slows down at a rate of 3.48m/s^2 until it stops at the next station. Find the total distance covered. Express your

*asked by Kim on January 17, 2012* -
## thermodynamics

two rigid tank that contain hydrogen2 at two different states arr connected to each other. now a valve is opened, and two gases are allowed to mix while achieving thermal equilibrium with the surroundings. the final pressure in the tank is to be

*asked by Anonymous on November 9, 2018* -
## Chemistry

A 0.60 L portion of a 1.2 M AgNO3 solution is mixed with a 0.3 L potion of a 1.2 M Na2CrO4 solution in an constant pressure calorimeter. Upon mixing, the solid Ag2CrO4 is formed and the heart released is 48.2 kJ. The specific heat of the solution is 4.18

*asked by Kyo on June 9, 2010* -
## college math

loverdale-Nurseries obtained a $60,000 loan at 7.5% compounded monthly to build an additional greenhouse. Construct a partial amortization schedule for payments of $1000 per month (except for a smaller final payment)showing details of the first 2 payments.

*asked by celina on November 6, 2012* -
## physics

1100g of ice at -50C is mixed with 100g of steam at 120C. Find out how much ice melts? The implied final temperature is 0C. Cice=0.5 Csteam=0.46 Hv=539 Hf =80 here is my work 1100(0.5)(0+50)+80m = 100(0.46)(120-0)+540(100) i am not getting the right answer

*asked by jeff on December 5, 2009* -
## College Algebra

What is the answer to: The plane was purchased new in 2006; therefore, x = 0 represents the year 2006. X - axis (horizontal)= years starting from 0= 2006 and increasing by 0.5 years X - axis (vertical)= price in $ amounts from 24,000 to 240,000 a). List

*asked by Stephen on December 31, 2011* -
## CCA CHECK ANSWERS

what type of power does the constitution grant to the supreme court? A)executive power B)federal power C)Judicial power D)legislative power*** Which are examples of judicial restraint in the supreme Court ? Select all the apply A)The verdict overturns the

*asked by A.A on December 7, 2016* -
## Physics

A box has a weight of 120 N and is being pulled across a horizontal floor by a force that has a magnitude of 100 N. The pulling force can point horizontally, or it can point above the horizontal at an angle θ. When the pulling force points horizontally,

*asked by Erne on October 11, 2015* -
## physics

5. A 2.00-kg block hangs from a rubber cord, being supported so that the cord is not stretched. The unstretched length of the cord is 0.500 m, and its mass is 5.00 g. The “spring constant” for the cord is 100 N/m. The block is released and stops

*asked by arjunsareen on January 24, 2012* -
## calculus

Baseball Star Bryan is standing at the top of the Sears Tower in Chicago and decides to throw a baseball up with a velocity of 5 m/s. The Sears Tower is 442 meters tall and gravity exerts a constant acceleration of -9.8 m/s/s. Ignore ball mass and wind

*asked by Jay on November 28, 2014* -
## Medical Billing and Coding

The patient is seen by his family physician for follow-up treatment of recently diagnosed asthmatic bronchitis. The physician's fee is $75. The patient's copayment is $20, and the patient is not required to pay any additional amount to the provider. The

*asked by Dionne on June 6, 2017* -
## algebra

Could someone please check my work. what is the slope of the line that passes through the given points?(2,12( and (6,11) -1/4 (my choice) 1/4 4 -4 My work: 11-12/6-2=-1/4 what is the slope of the line that passes through the given points? undefined( my

*asked by brandon on September 7, 2012* -
## History Help Please

1. Which of the following was an effect of the assembly line? A) it made workers want to return farms B) it made clothing more expensive to produce C) it increased demands for worker compensation D) it drove down the cost of clothing production *** 2. Who

*asked by anonymous on March 25, 2015* -
## Math - Trig

An observer on the ground at point A watches a rocket ascend. The observer is 120 feet from the launch point B. As the rocket rises, the distance d from the observer to the rocket increases. a. Express the measure of angle A in terms of d. b. Find the

*asked by McKenna Louise on December 14, 2013* -
## Math - Trigonometry

An observer on the ground at point A watches a rocket ascend. The observer is 1200 feet from the launch point B. As the rocket rises, the distance d from the observer to the rocket increases. a. Express the measure of angle A in terms of d. b. Find the

*asked by Shelley Nicole on December 12, 2013* -
## math

Helicopter A is flying due north toward a landing point 10 miles away. Helicopter B is 11 miles due east of helicopter A. About how far is helicopter B from the landing point?

*asked by Anonymous on November 25, 2011* -
## trig

Given the polar coordinates of a point, how do I find the rectangular coordinates? (2, 3pi/4) (-4, 7pi/6) (2/3, -2pi/3) Given the rectangular coordinates of a point, how do I find the polar coordinates? (4, 0) (3, 4) (2, -2)

*asked by BT on March 1, 2010* -
## Chemistry

How will the boiling point of a substance be affected by increasing the atmospheric pressure? How will the boiling point of a substance be affected by decreasing the atmospheric pressure?

*asked by Ash on December 1, 2010* -
## business

wall street journal provides the net asset value, the year to date percent return, and the three year percent return for 555 mutual funds will be selected for a follow up study on the size and performance of mutual funds. Use the forth column of the randon

*asked by Anonymous on October 29, 2013* -
## chemistry

125 mL of 25 dergree celsius of distilled water was used to wash and transfer a precipitate. rather than 20 ml of CHILLED distilled water (at 4 degree celcius). the solubility of baruim iodate monohydrate in 25 degree celcius water is 0.028g per 100 ml of

*asked by Myaa on March 1, 2010* -
## physics impulse

a baseball has a mass of 0.145kg. the ball is crossing the plate horizontally at 40 m/s when the batter hits the ball. The final velocity of the ball is 50 m/s stright up. what is the impulse that the batter gives the ball?

*asked by Anonymous on December 12, 2010* -
## Science

Two closed vessel A and B of equal volume containing air at pressure P1 and temperature T1 are connected to each other through a narrow open tube.If the temperature of one is now maintained(where T1>T2) then that what will be the final pressure of air

*asked by Sucheta on April 5, 2018* -
## Chemistry

calculate the final temperature (once the ice has melted) of a mixture made up of initially of 75.0mL liquid water at 29 degrees Celsius and 7.0 g of ice at 0.0 degrees Celsius

*asked by Celine on February 23, 2010* -
## chemistry

a gas occupies a volume of 5.00L at 27 degreesC and 742 mmHg. if the volume is held constant and the temperature is increased by 2 degreesC, what is the final pressure of the gas?

*asked by Nessa Marie Mejares on December 11, 2012* -
## chemistry

A H atom absorbs a photon with a wavelength of 9.50 × 10^1 nm. If the energy of the final state of the H atom was -8.72 × 10^(-20) J, calculate the energy of the initial state. Express answer in scientific notation

*asked by adriana on February 3, 2012* -
## physics

a man steps out of a rowboat into a dock. The man has a mass of 80 kg and moves forward with a velocity of 1.5 m/s. If the boat has a mass of 120 kg. and was initially at rest, what is its final velocity?

*asked by Vivian on November 26, 2014* -
## Chemistry

What is the final temperature when 2.50 x 10^5 J are added to 0.950 kg of ice at 0.0 degrees C? The specific heat capacity of water is 4186 J/(kg·degrees C) and the latent heat of fusion for ice is 3.35×10^3 J/kg.

*asked by A on March 15, 2018* -
## Physics

A figure skater can increase her spin rotation rate from 26 rpm to 165 rpm. Given that her initial moment of inertia is 4.6 kg - m2, find her final moment of inertia.

*asked by Anonymous on August 4, 2015* -
## Physics

A bike pump has a 2.3 cm diameter piston that can move a maximum length of 35 cm. How much work is done on the air in the pump if the initial pressure is 1 atm and the final pressure is 4.4 atm?

*asked by Aly on February 23, 2016* -
## Science

What is the equation for calculating final temperature when equal masses of water are mixed? What is the equation for calculating how much heat energy calories transferred to or from a mass of water?

*asked by Austin on February 14, 2008* -
## Multon Middle

A 5. pellet of aluminum at 20 degrees celcius gains 200 joules of heat. What is its final temperature? [specific heat of Aluminium, c=920 j/Kg. degrees celcius)

*asked by j nager on February 5, 2012* -
## Chemistry

Two - 20.0 g ice cubes @ -20 degrees C are placedinto275 g of water @ 25 degrees C. Assuming no energy is transfered to or from the surroundings caculate the final temperature of the water after the ice melts.

*asked by Jordan on September 10, 2012* -
## Chemistry

In a 25.8 liter vessel of nitrogen gas that is heated from 10 degrees Celsius to 110 degrees Celsius to reach a final pressure of 17450 mm Hg; how many grams of N2 do you have in the vessel?

*asked by Emily on April 7, 2015* -
## physics

A 55.0 g ice cube, initially at 0°C, is dropped into a Styrofoam cup containing 318 g of water, initially at 18.2°C. What is the final temperature of the water, if no heat is transferred to the Styrofoam or the surroundings?

*asked by JOHN on April 9, 2012* -
## Physics

A 40,000 kg railroad car initially traveling at 10 m/s collides inelastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?

*asked by Stan on November 21, 2012* -
## MAC1045

What will be the final temperature of the solution in a coffee cup calorimeter if a 50.00 mL sample of 0.250 M HCl(aq) is added to a 50.00 mL sample of 0.250 NaOH(aq). The initial temperature is 19.50 degrees C and the

*asked by Julian on April 21, 2011* -
## Physics

A 40,000 kg railroad car initially traveling at 10 m/s collides inelastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?

*asked by Joshua on November 19, 2012* -
## French

I hope this question isn't too broad but.. When do you not pronounce the final letter of a word when the next word begins with a vowel? I hope that makes sense. I know that you are never supposed to say the "T" in "et" when it comes before a vowel but

*asked by Nathalie on May 26, 2008* -
## Physics

A 40,000 kg railroad car initially traveling at 10 m/s collides inelastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?

*asked by Joshua on November 19, 2012* -
## Physics

An aluminum spoon at 84 C is placed in a Styrofoam cup containing 0.180 kg of water at 12 C. If the final equilibrium temperature is 21 C and no heat is lost to the cup itself or the environment, what is the mass of the aluminum spoon?

*asked by Amy on May 7, 2011* -
## Science

If the original pressure of a system is 700 torr, temp 30 C and volume 100L, what will the final volume be if the pressure is increased to 750 torr and temperature to 37C

*asked by Belle on December 4, 2014* -
## Physics

A 40,000 kg railroad car initially traveling at 10 m/s collides in elastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?

*asked by Bryan on November 18, 2012* -
## Physics

*asked by Anonymous on November 19, 2012* -
## organic chemistry

A solution of acetic acid (CH3COOH; Ka = 1.74 x 10-5) was titrated to a final pH of 4.76 by using NaOH solution. What % of acetic acid is converted to sodium acetate (CH3COO-Na+)? Show your method

*asked by brittany on September 12, 2010* -
## Physics

*asked by Joshua on November 19, 2012* -
## Physics

A 40,000 kg railroad car initially traveling at 10 m/s collides in elastically with a 20,000 kg railroad car intially at rest. The cars stick together. What is their final speed?

*asked by Anonymous on November 19, 2012* -
## physics

A force of 15 N (delivered by a cue) acts on a billiard ball for 0.01 s. Find the magnitude of the a. acceleration of the ball b. final speed of the ball c. distance over which the cue was in contact with the ball

*asked by Swastika on March 14, 2014* -
## Physics: Kinematics

A drag racer can travel a displacement of 120m in 5.00s starting from rest. Calculate the acceleration of the drag racer. Can you calculate the final momentum of the car?

*asked by Blnde on October 16, 2018* -
## homework help please! chemistry 111

the specific heat of a certain type of metal is 0.128 J(grams per Celsius). What is the final temperature if 305J of heat is added to 74.8g of this metal initially at 20.0 degrees Celsius?

*asked by danielle on February 26, 2012* -
## CHEMISTRY

At 285mmHg +25 degrees celsius,a gas sample has a volume of 2270ml. what is the final pressure in mmHg at a volume of 1250ml and a temperature od 175 degrees celsius?

*asked by TERI on August 20, 2011* -
## chemistry

A sample of gas with an initial volume of 32.50 L at a pressure of 755.0 torr and a temperature of 315.0 K is compressed to a volume of 15.80 L and warmed to 395.0 K. What is the final pressure of the gas?

*asked by Anonymous on December 5, 2011* -
## American history

I have to answer these questions: 5. Compare the viewpoints of the senators in the Versailles Treaty. 6. What was the final outcome of the Treaty of Versailles for the United States? 7. How was the map of Europe and the Middle East transformed as a result

*asked by Morgan on November 24, 2014* -
## chemistry

A sample of 7.83 grams of NaOH is dissolved into 620 mL of aqueous 0.250 M NaOH (as- sume no volume change). This solution is then poured into 1.67 gallons of water. (You may assume that the two volumes can be added.) What is the concentration of NaOH in

*asked by Anonymous on September 6, 2010* -
## college physics

A 215 g sample of a substance is heated to 330 degrees C and then plunged into a 105 g aluminum calorimeter cup containing 165 g of water and a 17 g glass thermometer at 12.5 degrees C. The final temp is 35.0 degrees C. What is the specific heat of the

*asked by E on May 6, 2010* -
## English 4

In the excerpt from Hard Times, Dickens refers to an “adversary.” What is the meaning of this word? In the context of the final paragraph of the excerpt, who or what is the adversary being discussed? An adversary is generally considered to be a person,

*asked by Ciara on April 27, 2015* -
## plz i need steve can u help dr bob222 help as well

A crystal is grown by evaporating A and 8 type atoms, and then letting them condense to form the crystal. If, because of the forces involved, on A atom is twice as likely to stick to the crystal OS a B atom, what is the probability that the final crysta

*asked by mayerimi on April 12, 2017* -
## business math

Dick Hercher borrowed $7,000 to travel to London. His loan is to be paid in 48months monthly installments of $190. at the end of 14 months, Dick ddecides to pay off his loan. What is the final payoff Dick will make?

*asked by tracie on August 31, 2012* -
## chemistry step by step thank a lot

342gm of 20% by mass of ba (OH)2 solution sq gr 0.57 is reacted with 1200ml of 2M hn03. If the final density is same as pure water then molarity of the ion in resulting solution by nature of the above solution is dentified 0.888m Who solve it for me step

*asked by ken on July 6, 2014* -
## Physics

1000cm3(cude) of air at 20C and 101.35kpa is heated at constant pressure until its volume doubles. (A) use the ideal gas equation to calculate the final temprature of the gas? (B) calculate the work done by the gas as it expands.

*asked by Anonymous on October 25, 2018* -
## physics/chemistry:sir steve drbob222 steve steve

A crystal is grown by evaporating A and 8 type atoms, and then letting them condense to form the crystal. If, because of the forces involved, on A atom is twice as likely to stick to the crystal OS a B atom, what is the probability that the final crysta

*asked by weyeremi on April 12, 2017* -
## math

Two cell phone companies have different rate plans.Runfast has monthly charges $25 plus $10 per gig of data.B A&D’s monthly charge is $18 plus 15 per gig of data. Your task is to determine under what circumstances each company has the better pricing. You

*asked by Help please on April 22, 2016* -
## math

Suppose you take out a loan for 180 days in the amount of $13,500 at 11% ordinary interest. After 50 days, you make a partial payment of $1,000. What is the final amount due on the loan?

*asked by Karla on October 23, 2014* -
## math

Sarah was trying to figure out her grades for her math course. She only knew the grade of 4 tests she had taken, however the class had taken 5 tests total. She scored a 94, 67, 83 and 93. If Sarah ended up with a grade of 90, what did she get on the 5th

*asked by Jay on April 18, 2015* -
## physics

a particle of mass m moving with a speed v meters per second strikes a particle of mass 3m at rest and joins together. express the final kinetic energy as a fraction of initial energy

*asked by ken on May 5, 2014* -
## Science

In a heat engine, if 700 J of heat enters the system, and the piston does 400 J of work, what is the final internal (thermal) energy of the system if the initial energy is 1,200?

*asked by Anonymous on March 8, 2017* -
## Chemistry

Find the final temperature, given that the initial temperature of a 40 g piece of Aluminum is 25 degrees Celsius and it is heated with 1800 J of heat. The specific heat capacity of Aluminum is 0.903

*asked by Ashley on June 4, 2017* -
## Physics

A ball is dropped from rest and falls for 5 s. What are its position and velocity at that instant? So the variables I can define are v1=0, v2= x t=5 Other than that I don't know what to do in this problem. I'm assuming position is the height so I'm looking

*asked by Kayla on June 12, 2008* -
## physics

for a free throw in basketball,find an equation for the final angle to go into the hoop in terms of y and x to the hoop and the initial angle. I can't seem to get an equation with only those variables. I always get stuck with others like time and velocity.

*asked by Mischa on February 3, 2008* -
## chemistry

3 moles of an ideal gas initially at a pressure of 1 atm and a temprature of 100°C are expanded to twice the initial volume and then heated to 200°C at the new volume.What is the final pressure in atm?

*asked by md shahnawaz on May 2, 2014* -
## Chemistry

A gas-filled balloon having a volume of 3.50 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are −23°C and 3.00 10−3 atm, respectively. Calculate the final

*asked by Heath on March 12, 2010* -
## Math

Pick what age you would like to be (may be your actual age if you like). Add 10. Multiply the result by 4. Add 200. Divide by 4. Subtract your original number. The final result is 60. Explain how I knew that.

*asked by Erika on February 10, 2015* -
## Calculus

Consider the indefinite integral (6x^3+3x^2-19x-10)/(x^2-4)dx Then the integrand decomposes in the form ax + b + (c/(x-2)) + (d/(x+2) I found b and c to equal 3 and d to equal 2, but I'm having trouble finding A and finding the final integration by

*asked by Alison on September 27, 2013* -
## chemistry

A sheet of gold of mass 100g and a teperature of 18.0 degrees is placed flat on a sheet of iron weighing 20g and at a temperature of 55.6 degrees. what is the final temperature of the combined metal.

*asked by moses on February 24, 2014* -
## Calculus

I'm supposed to find the average value of the function over the given interval. f(x) = sin(nx), interval from 0 to pi/n, where n is a positive integer. I know the average value formula, and I know that the integral of that function would be (-1/n)cos(nx),

*asked by Anna on April 27, 2012* -
## physics

A spaceship moving with an initial velocity of 58.0 meters/second experiences a uniform acceleration and attains a final velocity of 153 meters/second. What distance has the spaceship covered after 12.0 seconds?

*asked by luisa on January 8, 2015* -
## chemistry

75.0 mL of a 1.50 M solution is diluted to a total volume of 278 mL. A 139-mL portion of that solution is diluted by adding 139 mL of water. What is the final concentration? Assume the volumes are additive.

*asked by tia on October 14, 2016* -
## Science

In a heat engine, if 700 J of heat enters the system, and the piston does 400 J of work, what is the final internal (thermal) energy of the system if the initial energy is 1,200 J?

*asked by Ivan on May 2, 2016* -
## Science

The length of an aluminium bar of lenth 80cm increase by 1mm on heating. What is the final temperature of the bar if it was initially at temperature 20°C? ( given: coefficient of linear expansion of aluminium = 25×10-6/° C)

*asked by Chanchal on January 18, 2016* -
## Elastic Collisions-Physics

A 0.16 kg billiard ball moving at 1.20 m/s collides elastically with one of the same mass at rest. It continues at a speed of 0.6 m/s afterward in a different direction from before. What is the final speed of the other billiard ball? I thought it was 0.6

*asked by Mm on March 12, 2017*

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