Tuesday

September 30, 2014

September 30, 2014

Number of results: 9,308

**physics**

Let a force of 1500 Newtons act through a distance of 200 meters on a 1500 kg car which starts from rest. a. What is the work done? b. What is the final velocity? c. What is the car's momentum? d. What is the car's change in momentum? e. What is the car's Kinetic Energy? f. ...
*November 14, 2011 by Ryan*

**PsyDAG homework check**

The monthly rents for the apartments in a building are listed below. $425, $550, $550, $550, $650, $650, $650, $650, $800, $900 Part A: Find the mean$637.50 median=$650 mode=$650 range=$475 and standard deviation of the rents????
*May 24, 2012 by jenny*

**homework check plz**

The monthly rents for the apartments in a building are listed below. $425, $550, $550, $550, $650, $650, $650, $650, $800, $900 Part A: Find the mean$637.50 median=$650 mode=$650 range=$475 and standard deviation of the rents???
*May 24, 2012 by jenny*

**algebra homework check**

The monthly rents for the apartments in a Business building are listed below. $425, $550, $550, $550, $650, $650, $650, $650, $800, $900 Part A: Find the mean$637.50 median=$650 mode=$650 range=$475 and standard deviation of the rents???
*May 25, 2012 by jenny*

**Physics**

A 650 kg car traveling 8 m/s speeds up to 15 m/s in 25 s. Find the impulse on the car.
*May 2, 2013 by Zar*

**physics**

A 1500-kg car coast in neutral down a 2.0degrees hill. The car attains a terminal speed of 20.0 m/s. The question is:how much power must the engine deliver to drive the car on a level road at 20.0 m/s?? Help me out please!!
*April 29, 2014 by Anonymous*

**Engineering**

You are given a hydraulic jack which you'd like to keep in your car in case you have a flat. Your vehicle weighs 4500lbs, and you know the jack will have to lift 1500 lbs when you put it under the axle. The hand end cylinder of the jack is 1/2inch in diameter and the "work" ...
*September 25, 2006 by Matt*

**physics**

A car has a mass of 1500 kg. If the driver applies the brakes while on a gravel road, the maximum friction force that the tires can provide without skidding is about 7000 N. If the car is moving at 18 m/s, what is the shortest distance in which the car can stop safely?
*September 22, 2014 by Josh*

**Physics**

A car with a mass of 1500 kg moves at 26 m/s. What braking force is needed to bring the car to a halt in 10 s?
*July 25, 2012 by DENNIS*

**physics**

A 1500.0 kg car accelerates uniformly to double its speed from 35.9 km/h in 4.74 s. What net force acted on this car?
*February 5, 2013 by Emily*

**physics**

a stationary car with a mass of 1500 kg reaches a velocity of 15 m/s 5 seconds after starting, what is the car's acceleration
*October 18, 2010 by Joe Darp*

**physics**

An original stationary car with a mass of 1500 kg reaches a velocity of 15 m/s/s after starting. what is the car's acceleration?
*December 5, 2010 by Anonymous*

**Physics**

You are driving your car at a constant speed down the freeway. You are using 42 horsepower to do this. If the air resistance and frictional forces add up to 650 N, what is the net force on your car?
*May 13, 2012 by Leah*

**Physics**

A force of -9200 N is used to stop 1500 kg car traveling at 23 m/s. What braking distance is need to bring the car to a halt?
*September 19, 2007 by Anonymous*

**physics**

A car has a mass of 1500 kg. What is the direction and magnitude of the force that is required to accelerate the car at 4.5 meters per second squared to the east?
*November 4, 2009 by Anonymous*

**Math**

A car dealer will sell you the $16,650 car of your dreams for $3,290 down and payments of $331.97 per month for 48 months. What is the APR? (Round your answer to the nearest tenth of a percent.)
*December 4, 2012 by Kim*

**algebra 2**

The monthly rents for the apartments in a building are listed below. $425, $550, $550, $550, $650, $650, $650, $650, $800, $900 Part B: The apartment manager considers raising the rent for every apartment by $50. Find the mean, median, mode, range, and standard deviation of ...
*May 26, 2012 by jenny*

**physics**

A 1500-kg car is making a turn with a 100.0-m radius on a road where the coefficient of static friction is 0.70. What is the maximum speed the car can go without skidding?
*November 7, 2010 by jane*

**physics**

A car of 1500 kg mass moving with constant speed 10m/s for 10s . Calculate the average force acting on the car during this time
*April 29, 2013 by saber*

**Chemistry**

How much Ca(NO3)2 should be weighed out to have 0.650? To have 0.650 what of what. Do you want 0.650 g Ca?
*February 7, 2007 by Bob*

**physics**

A car of mass 1500 kg traveling at 15.6 m/s loses its brakes and collides with the rear end of the car in front of it, which has a mass of 1020 kg and is traveling in the same direction at 12.5 m/s. If the smaller car is given a speed of 15.3 m/s by the collision, what is the...
*April 18, 2013 by YOLO*

**physics**

a 1500 kg car moving with a speed of 15 m/s collides with a utility pole and is brought to rest in 0.3 s. Find the average force exerted on the car during the collision.
*February 7, 2011 by Kriti*

**Physics**

A 1500 kg car is turning around an arc of radius 20 m at a constant speed of 30 mph without slipping. What is the friction force the ground exerts on the car?
*March 21, 2011 by James*

**algebra**

A continuously compounded account starts with $1500 in principal. The annual interest rate is 9.1%. What is the balance after 30 years? Help please. Thanks amount= 1500*e^.091*30= 1500 e^2.73 thanks
*April 12, 2007 by George*

**finance math**

A car dealer purchased 2 cars, one for $1500 and the other for $20000, He then sold the first car at a loss of 14% and the second car for a profit of 15%. Find the dealer¡¯s profit for the whole transaction and express the answer as a percentage of his total cost.
*August 27, 2012 by timmy*

**Physics**

A car is rounding an unbanked circular turn with a speed of v = 35 m/s. The radius of the turn is r = 1500 m. What is the magnitude ac of the car’s centripetal acceleration?
*October 23, 2013 by Alhaya*

**physics**

A 1500 kg car moving at 10 m/s is stopped by the action of its brakes. The work done by the car's brakes is ____ Joules.
*March 28, 2011 by bode*

**physics**

A 1500 kg car moving at 10 m/s is stopped by the action of its brakes. The work done by the car's brakes is ____ Joules.
*March 28, 2011 by aaron*

**physic**

A 1500 kg car moving at 10 m/s is stopped by the action of its brakes. The work done by the car's brakes is ____ Joules.
*July 17, 2012 by Anonymous*

**Proportions**

Am I doing this correctly and is the answer right? Assuming 1 hour of running in plsce burns 650 cal/h if a person ran in place for 15 min.'s how many calories would be burned? 650/1 * 1/4= 325/2=162.5 calories burned every 15 min.'s 650/1 = x/.25 will give the same answer. ...
*May 22, 2007 by Amber*

**Physics**

A race car driver drives her 1500 kg car around a circular turn, which is banked at an angle of 20 degrees to the horizontal. If the car is traveling around the frictionless curve of radius 100m, a) What is providing the center-seeking force on the car? (ie. centripetal force...
*December 1, 2009 by Anonymous*

**physics**

What is the work done by a car's braking system when it slows the 1500-kg car from an initial speed of 96 km/h down to 56 km/h in a distance of 55 m? I have tried to work this one and can't seem to get the answer.
*February 13, 2011 by merri*

**Physics**

A 1500 kg automobile travels at a speed of 105 km/h along a straight concrete highway. Faced with an emergency situation, the driver jams on the brakes, and the car skids to a stop. (a) What will be the car's stopping distance for dry pavement (µ = 0.85)? (b) What will be the ...
*September 21, 2010 by Tom*

**Algbra**

A car dealer will sell you the $16,650 car of your dreams for $3,290 down and payments of $331.97 per month for 48 months. What is the APR? (Round your answer to the nearest tenth of a percent.) I keep getting the wrong answer. I get 26.1
*December 4, 2012 by Sarah*

**Physics**

On vacation, your 1500 kg car pulls a 540 kg trailer away from a stop light with an acceleration of 1.60 m/s2. (a) What is the net force exerted by the car on the trailer? please show work
*September 15, 2009 by jawn*

**Physical Science**

A 1000-kg car is moving east at 80 km/h collides head on with a 1500-kg car moving west at 40 km/h, and the two cars stick together. Which way does the wreckage move and with what initial speed?
*September 11, 2011 by Help*

**physics**

A highway curve with a radius of 650 m is banked properly for a car traveling 100 km/h. If a 1600- kg Porshe 928S rounds the curve at 230 km/h, how much sideways force must the tires exert against the road if the car does not skid?
*October 15, 2013 by Anonymous*

**physics**

A car of mass 1500kg moves to the right along a level straight road at a speed of 25 mph. It collides directly with a stopped motorcycle of mass 150kg. What is the total momentum after the collision? p_initial = p_final m_1*v_1i +m_2*v_2i = m_1*v_1f + m_2*v_2f (1500)(11.17m/s...
*October 24, 2007 by Tammy*

**Chem**

A tank car containing concentrated HCL (molarity 12.1) derails and spills exactly 1500 L of acid. Solid potassium hydroxide is required ot neutralize the spill. (a) Write a balanced chemical equation. HCl + KOH -> kCl + H2O (b) What is the molar ratio between acid and base...
*July 6, 2009 by Lena*

**physics**

A 1500 kg automobile travels at a speed of 105 km/h along a straight concrete highway. Faced with an emergency situation, the driver jams on the brakes, and the car skids to a stop. (a) What will be the car's stopping distance for dry pavement (µ = 0.85)? (b) What will be the ...
*September 20, 2010 by Tom*

**Physics**

A 1000-kg car moving east at 80 km/h collides head-on with a 1500-kg car moving west at km/h, and the two cars stick together. (a) Which way does the wreckage move and with what initial speed? (b) How much KE is lost in the collision?
*January 28, 2013 by Jan*

**simple physics**

A 1500 kg car travels along the road at 25 m/s when the driver sees the light turn red and applies the brakes. What average force is needed to stop the car in a) 5 seconds and b) .2 seconds? What formula should be used?
*December 4, 2011 by JuJu*

**physics**

Two cars A & B are coming closer to one another with speed 36 km/h and 72 km/h Separated by a distance 1500 m calculate : 1 . time interval after which two car meet . 2 . if acceleration of car A is 2m/s2 then calculate time interval after which car A & B Will meet. 3.if ...
*September 14, 2014 by Anonymous*

**11th grade**

a 1000 kg car has a motor that exerts 1500 N of force to move it forward. a frictional force of 400 N opposes it's forward motion. calculate the acceleration of this car
*December 1, 2010 by Anonymous*

**physics**

A delivery truck with a mass of 1700 kg is stopped in the street w/o its brakes on, when a small car hits it from behind. The car has a mass of 650 kg, and is traveling at 3.7m/s immediately before it hits the truck. Both the car and the truck have good bumpers, so assume the ...
*November 10, 2010 by aok*

**Physics**

What is the momentum of a two-particle sys- tem composed of a 1300 kg car moving east at 60 m/s and a second 1500 kg car moving west at 95 m/s? Let east be the positive direction. Answer in units of kg · m/s.
*December 9, 2010 by Ashley*

**physics**

a car pulling a 1500-kg trailer produces an acceleration of 0.50m/s^2. a)the frictional force in the wheels of the trailer is 125N. what force is the car exerting on the trailer? b) what force is the trailer exerting on the car?
*July 26, 2011 by belle*

**pre-calculus**

The suggested retail price for a new car is p dollars. The dealership advertises a 10% discount and a factory rebate of $1500. Write a function S in terms of p, representing the cost of the car after receiving the dealership discount.
*January 28, 2014 by Kailtan*

**physics**

a 1500 kg car accelerates from 0 to 25 m/s in 7.0 s. What is the average power delivered to the engine?
*September 26, 2010 by shnook*

**Physics**

A 1500 kg car traveling at 17.6 m/s to the south collides with a 5000 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? Answer in units of m/s
*January 22, 2012 by Angel*

**mechanics**

Find the total kinetic energy of a 1500 g wheel, 700 mm in diameter, rolling across a level surface at 650 rpm. Assume that the wheel can be considered as a hoop. (b) For the wheel in part (a), calculate the torque required to decrease its rotational speed from 400 rpm to rest...
*May 14, 2013 by george*

**need help**

the monthly rents for five apartments advertised in a newspaper were $650, $650, $740, $1650 and $820? mean:902 mode:650 median:740 which one explains the monthly rent? 1. median 2.mode 3.mean
*June 5, 2012 by janika*

**Physics**

A 1500-kg car moving north at 27.0 m/s is struck by a 2165-kg car moving east at 13.0 m/s. The cars are stuck together. How fast and in what direction do they move immediately after the collision? 1. Degree north of east? 2. M/S?
*February 3, 2014 by Sean*

**Algebra**

Please solve the inequality .04 x + .06(12000-x) >= 650 .04x + 720 - .06x ¡Ý 650 -.02x ¡Ý -70 x ¡Ý -70/-.02 x ¡Ý 3500 I think this is wrong and what is below is correct? Which is right? Thanks! .04x + 720 - .06x ¡Ý 650 -.02x ¡Ü -70 x ¡Ü -70/-.02 x ¡Ü 3500
*July 14, 2009 by Crystal*

**Algebra**

.04x + 720 - .06x > = 650 -.02x <= -70 x < = -70/-.02 x < = 3500 Or do the sign go the other way like this? .04x + 720 - .06x > = 650 -.02x > = -70 x > = -70/-.02 x > = 3500 Which would be the solution to solve this inequality? .04 x + .06(12000-x) >...
*July 14, 2009 by Crystal*

**math**

sales tax directions: find the total cost or sale price to the nearest cent? 1500 computer;7%discount Subtract 7% of $1500 from the price. This is the same thning as taking 93% of $1500. Your question mentions sales tax but you do not provide a rate for that.
*February 26, 2007 by brenton*

**Don't get scared when you hear the word Physics!**

A 1500 kg car traveling at 16.0 m/s to the south collides with a 5100 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? Answer in units of m/s
*January 17, 2013 by Just help please. Homework due in 4 hours *

**Physics **

A wooden boxcar is moving along a straight railroad track at speed v1. A sniper fires a bullet (initial speed v2) at it from a high-powered rifle. The bullet passes though both lengthwise walls of the car, its entrance and exit holes being exactly opposite each as viewed from...
*September 18, 2010 by J*

**physics**

calculate the impulse necessary to stop a 1500 kg car travelling at 90km/hour
*October 18, 2010 by Anonymous*

**physics**

A force of 3000 N is applied to a 1500-kg car at rest. (a) what is its acceleration? (b) what will its velocity be 5 s later?
*November 11, 2010 by dominic echols*

**Physics**

A 1500 kg car moving east at 15 m/s collides with a 1730 kg car moving south at 15 m/s and the two cars stick together. What is the velocity of the cars right after the collision? How much kinetic energy was converted to another form during the collision?
*October 25, 2007 by Dante*

**Finance**

Mrs. Jones owns 100 shares of stock in Daimler-Benz valued at 16.5 Euros per share. What is the value in $U.S. of her stock if: 0.90 € = $1 Value of 100 shares at €16.5 per share 1,650.00 Euros Value of 1,650.00 Euros at 0.90 € = $1 is $1,833.33 0.70 € = $1 Value of 1,650.00 ...
*August 24, 2013 by Laura*

**Physics**

A 10,000N car comes to a bridge during a storm and finds the bridge washed out. The 650-N driver must get to the other side, so he decides to try leaping it with his car. The side the car is on is 16.6 m above the river, while the opposite side is a mere 7.90 m above the river...
*February 8, 2008 by Charlie*

**Physics**

What is the magnitude of the average force required to stop an 1500 kg car in 8.0 s if the care is traveling at 95 km/h? Sum of F = ma?
*June 13, 2012 by Mike *

**physics**

If a 1500 kg car stopped from an in 5.6 seconds with an applied force of 5000 N, how fast was it initially traveling?
*September 27, 2014 by Iworlock*

**physics**

Proper design of automobile braking systems must account for heat buildup under heavy breaking. Calculate the thermal energy dissipated from brakes in a 1500 kg car that descends a 17° hill. The car begins braking when its speed is 95 km/h and slows to a speed of 35 km/h in a ...
*November 5, 2012 by Lauria*

**physics**

Unless otherwise stated, all objects are located near the Earth's surface, where = 9.80 . A 3000 truck tows a 1500 car by a chain. Part A If the net forward force on the truck by the ground is 3500 , what is the acceleration of the car? Part B What is the tension in the ...
*September 29, 2012 by sammy*

**Physics**

If 7.00hp are required to drive a 1500-kg automobile at 66.0 km/h on a level road. What power is necessary to drive the car at 66.0 km/h down a 1.00 % grade? It requires 42.9 hp to drive the car at 66.0 km/h up a 10.0 % grade (a hill rising 10.0 m vertically in 100.0 m ...
*May 4, 2011 by Allison*

**physics**

If 7.00hp are required to drive a 1500-kg automobile at 66.0 km/h on a level road. What power is necessary to drive the car at 66.0 km/h down a 1.00 % grade? It requires 42.9 hp to drive the car at 66.0 km/h up a 10.0 % grade (a hill rising 10.0 m vertically in 100.0 m ...
*May 5, 2011 by Allison*

**Physics**

Car A is traveling at 18 m/s and car B at 25 m/s. Car A is 300m behind car B when the driver of Car A accelerates his car with an acceleration of 1.80m/s^2. How long does it take car A to overtake car B?
*January 8, 2013 by B*

**college physics**

Imagine that your car can travel 25 mi on 1 gal of gas when traveling on a level road at 55mi/h. Estimate your gas mileage while traveling at 55 mi/h up an incline that gains 3m in elevation for every 100 m one goes forward along the incline. Assume that your car has a mass of...
*October 11, 2010 by Tommy*

**Math percentage**

I don't really understand percentages grade 6 math. 1.60% discount on a 7$ item so items price is 40% of original so 0.4 x 7= 2.8$? 2. A population of 1500 people increases 15% each year how would this question be done? 1500 x .15=225 so the next years population would be 225...
*July 27, 2009 by kelly*

**Chemistry**

how many grams of potassium bromide could be recovered by evaporating 650 grams of 15 perentKBr solution to dryness...... 650 * (.15) = 97.5 is this correct
*October 25, 2010 by Pierre*

**Chemistry**

how many grams of potassium bromide could be recovered by evaporating 650 grams of 15 perentKBr solution to dryness...... 650 * (.15) = 97.5
*October 25, 2010 by Pierre*

**SCIENCE/CHEM**

the volume of a sample of gas is 650.ml at STP. what volumes will the sample occupy at 0.0degrees celsius and 950.torr??? is it 650.ml?
*May 12, 2010 by Andy*

**Needing HELP PLEASE!!!**

Which value correctly completes the statement? 6,501.5 KM = ______ m Options: 1. 6,501,500 2. 65,015 3. 650,150,000 4. 650.15
*February 28, 2013 by Bell*

**algebra**

On a particular day, an airliner has 150 flights arrive early, 500 flights arrive on time, and 75 flights arrive late. What is the experimental probability that a flight will not be late? A. 75/725 B. 75/650 C. 500/650 D. 650/725
*September 22, 2014 by nautica*

**physics**

What constant net force is required to bring a 1500 kg car to rest from a speed of 100 km/h within a distance of 55 m?
*July 22, 2008 by Matt*

**ap physics**

How fast would a 1200 kg car travel if it had the same linear momentum as a 1500 kg truck traveling at 90 km/h?
*January 7, 2012 by sergio*

**Physics**

A car with bad shocks has a mass of 1500 kg. Before you go for a drive with three of your friends you notice that the car sinks a distance of 6.0 cm when all four of you get in the car. You estimate that the four of you together have a mass of 271 kg. As you are driving down ...
*January 3, 2012 by Sarah*

**Physics**

A car with bad shocks has a mass of 1500 kg. Before you go for a drive with three of your friends you notice that the car sinks a distance of 6.0 cm when all four of you get in the car. You estimate that the four of you together have a mass of 271 kg. As you are driving down ...
*January 4, 2012 by Sarah*

**Physics**

A roller-coaster car with a mass of 650 kg starts at rest from a point 28 m above the ground. At point B, it is 14 m above the ground. [Express your answers in kilojoules (kJ).] (a) What is the initial potential energy of the car? 1 . kJ (b) What is the potential energy at ...
*March 5, 2012 by Sara*

**physics**

a 1500 kg car travelling at 16.7 m/s to the south collides with a 6300 kg truck that is initially at rest at a stop light. the car and the truck sticks togetherand moves together after the collision. what is the final velocity of the two-vehicle mass? answer in units of m/s.. ...
*May 30, 2011 by OMAR*

**Principles of Management**

Having just spent $1500 for a new engine for his old car, Raimndo now learns his transmission needs to be replaced. Raimundo decides to junk the car. Raimundo has avoided continuing the______ bias. I am in a toss up of either (b)adjustment or (c) availability. Others to choose...
*April 23, 2012 by Carol*

**physics**

A delivery truck with a mass of 1700 kg is stopped in the street w/o its brakes on, when a small car hits it from behind. The care has a mass of 650 kg, and is traveling at 3.7m/s immediately before it hits the truck. Both the car and the truck have good bumpers, so assume the...
*November 10, 2010 by aok*

**Physics**

A hydraulic lift has two connected pistons with cross-sectional areas 25 cm2 and 390 cm2. It is filled with oil of density 530 kg/m3. a) What mass must be placed on the small piston to support a car of mass 1500 kg at equal fluid levels? kg HELP: The pressure is constant at ...
*November 6, 2010 by Kimbo*

**Math- Please check**

Please double check me Find the median of the following set of numbers 47,20,52,35,58,57 a. 49 1/2 b 47 c 48 1/2 d 52 Answer: a Which of the following numbers are integers? 2/3, 35, 0.093,-650, 42.5 a 0.093 and 42.5 b 35 and -650 c 2/3 d -650 answer: c
*March 23, 2008 by Sherri*

**Math- Please check**

Please double check me Find the median of the following set of numbers 47,20,52,35,58,57 a. 49 1/2 b 47 c 48 1/2 d 52 Answer: a Which of the following numbers are integers? 2/3, 35, 0.093,-650, 42.5 a 0.093 and 42.5 b 35 and -650 c 2/3 d -650 answer: c
*March 23, 2008 by Sherri*

**consumer math**

phil smith is a car salesman last week his total sales amounted to 27.650.00 and he recieved 1.382.50 in commission what is his rate of commission
*August 10, 2013 by darlene*

**precalc**

A is accumulated amount investing after p principal for t years at and interest rate of r compounded anually k is times per year. P=$1500, r= 7%, t=6 P=1500, r=7%,t=5,k=4 P=$1250, r=5.4%,t=6
*June 12, 2011 by kevin*

**Physics**

Hi everyone, finished all my utexas physics homework, save this last question... I don't quite why I'm not getting the right answer. Any help offered will be appreciated, it could lead me to the right answer :) P.S.---- I've already imputed the following four answers which ...
*October 24, 2010 by Kyle*

**Physics**

Hi everyone, finished all my utexas physics homework, save this last question... I don't quite why I'm not getting the right answer. Any help offered will be appreciated, it could lead me to the right answer :) P.S.---- I've already imputed the following four answers which ...
*October 24, 2010 by Kyle*

**Physics**

3.A car with a mass of 1500 kg is parked on a hill with an incline of 20°. a.What is the weight of the car? b.What is the normal force the car experiences? (hint: balance the forces parallel and perpendicular to the hill using Newton’s second law) c.What is the magnitude of ...
*June 20, 2011 by Hunter*

**physics**

two cars weighing 1500 kg are made to collide with a wall.the initial and final velocities are 15 m/s and 2.6 m/s.if the collision last for 0.15 seconds,then find impulsive force exerted on the car
*June 6, 2013 by ad*

**physics**

two cars weighing 1500 kg are made to collide with a wall.the initial and final velocities are 15 m/s and 2.6 m/s.if the collision last for 0.15 seconds,then find impulsive force exerted on the car
*June 6, 2013 by z*

**physics**

two cars weighing 1500 kg are made to collide with a wall.the initial and final velocities are 15 m/s and 2.6 m/s.if the collision last for 0.15 seconds,then find impulsive force exerted on the car
*June 7, 2013 by za*

**Physics D **

A 1500-kg car moving north at 27.0 m/s is struck by a 2165-kg car moving east at 13.0 m/s. The cars are stuck together. How fast and in what direction do they move immediately after the collision? 1. what is the degree north of east? 2. how was do they move after the collision...
*February 3, 2014 by Adam*

**chemistry**

For the titration of 20.0 mL of 0.1500 mol/L NH3(aq) with 0.1500 mol/L HI(aq)(the titrant), calculate a) the pH before any HI(aq) is added b) the pH at the equivalence point
*April 6, 2008 by Ross*

**Physical Science**

If a 1500 kg car is moving 20.0 m/s is brought to a stop by brakes. How many kilocalories of heat are generated in the process? Please include the formula that I should use to find the answer. -Thanks
*October 26, 2007 by Sarah*

**U S History**

How did human history in North America, from 1500 B.C. to 1500 A.D., differ from the events of Asia, Eurasia, and Europe on humanity during the same period?
*June 21, 2009 by Bradley*

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