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March 24, 2017

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Number of results: 71,455

Chemistry
I'm trying to write an equation for the reaction of zinc nitrate with aqueous ammonia. I know that zinc hyroxide is produced first but I don't really know how to write an equation for this. This is what I came up with: Zn(NO3)2 + 2OH- --> Zn(OH)2 + 2NO3- I'm not really sure...
March 1, 2010 by Alice

Chemistry --Help 2! :)
Predict whether Fe(OH)2 will dissolve, precipitate, or do neither after: (a) water is added --> dissolve (b) Fe(OH)2 is added--> neither (c) Solid Fe(NO3)2 is added--> precipitate (d) Solid KNO3 is added---> neither I'm given the answers...but no explanation. I am ...
March 9, 2010 by Val

Psychology220
Write a 350- to 700-word response summarizing the three dimensions of love and how they interrelate to identify a specific type of love relationship. I have the fist part done but I am not really sure how to go about writing how they interrelate to identify a specific type of ...
March 20, 2011 by Shay

French
I'm having difficulty with these two sentences. There is something wrong with them and I can't figure out what it is. I'm pretty sure it have to do with pluralization but I don't know what I'm doing wrong. Ils avaient un job. Ils travaillaient dans un garage. & Vous n'aviez ...
June 11, 2012 by Lissa

How to Plug these values into the Arrhenius Formul
A reaction has a rate constant of 1.23×10-4 s at 28 degrees C and 0.235 s at 79 degrees C. A: Determine the activation barrier for the reaction. B: What is the value of the rate constant at 15 degrees C? ------------- I know that I need to use the Arrhenius formula. However, ...
January 30, 2013 by Amy

History
How did the presidential plan for reconstruction differ form congresses plan? A congress believed it and not the president should have power over reconstruction. B the president believed that congress will be too soft on southern rebels C congresses plan denied blacks and ...
December 8, 2015 by Anonymous

Physics
Not at all sure where to start with this problem. Any help would be appreciated! The siren of an ambulance has a frequency f=500 Hz. A pedestrian standing on a sidewalk listens to this siren as the ambulance passes by at a speed of 65 mph. The speed of sound in air is 330 m/s...
December 3, 2016 by Jamie

Quick English check
Please check to see if I have these words in the correct sentences. Correct me if I'm wrong! :) 1. The defendants attorney objected to the plaintiff's ASSERTION, claiming it was hearsay. 2. The news media PROMULGATED the results of the election. 3. I tried to ARTICULATE my ...
August 31, 2015 by Grace

calculus
proponents of the peak oil theory claim that worldwide production of petroleum will soon reach a maximum and start to decline. (there is considerable debate about how soon this will occur) let P(t)= the world's rate of petroleum production t years after 2000. let T be the date...
April 27, 2011 by Caren

calculus
Jen needs to make a flyer for her dog's birthday party. She wants the flyer to contain 40 square inches of printed portion and she wants to use 1 inch of each side as well as 2 inches of top and bottom of the paper for decoration. What size paper should Jen choose in order to ...
December 21, 2016 by angie

English
Posted by English on Sunday, February 27, 2011 at 7:26pm. 1. You can read whatever magazine you like. 2. You can read which magazine you like. 3. You can read that magazine you like. (Which one is right? Are they all grammatical? What is the difference in meaning?) rfvv - ...
March 2, 2011 by rfvv

Early Child Ed.
Would the best answer for this question be: #1 or #3? A change that takes place from young preschoolers to older preschoolers is inner speech. This is shown through the child: 1. planning ideas in his head. 2. carrying on conversations with himself. 3. asking for others to ...
September 1, 2007 by Juanita

Statistics
Hi - I have some data from a biology experiment that I need to find out if it is significant and I don't know what test to use - maybe Anova - but I am not sure which variables are which. I used 4 levels of light (from dark to bright). 30 sandflies. At 4 different times I ...
July 28, 2008 by Angela

AP Chemistry (repost)
some reactions that are considered to be spontaneous at low temperatures will not proceed at a measurable rate or form any measurable quantity of products for several hours, days, or years. a. explain why this is. b. will the addition of a catalyst alter the value of delta "G...
December 5, 2009 by anonymous

US history
When Kennedy was elected president, many were: A. pleased because of his clear experience. B. fearful because he had appointed such controversial people to the cabinet. C. pleased because of sound cabinet appointment and his ability to inspire. I think it might be C but not ...
November 22, 2010 by anthony

math
Number of People You Have Known Who Were Victims of Homicide # of Victims Frequency 0 3944 1 279 2 97 3 40 4 30 a. To find the mean, it is necessary to give a score to the “4 or more” category. Find it, using the score 4.5. (In practice, you might try a few different ...
September 21, 2011 by mary

Trig
The angle 2x lies in the fourth quadrant such that cos2x=8/17. 1.Which quadrant contains angle x? 2. What is the measure of x, in radians? ---------------- I know that angle 2x is in quadrant 4, but quadrant x...? I am not sure where it is and how to get the measure of it in ...
May 31, 2009 by Jus

Chemistry
1)How many protons and electrons are in a sulfate ion SO4^2- ? I know the answer is 48 protons and 50 electrons but i do not know how to get this from the ion. 2) What is the charge on a sulfide ion? The answer is -2 but im not sure why. Is sulfide always -2?
December 4, 2011 by Hannah

Math. Just checking
Just making sure because im doing h.w over scientific notations and I know how to do them.. I'm just checking if I'm right.. in scientific notations the number has to be between 1 and 10 right?
January 28, 2015 by Anonymous

English / Punctuation
Identify the correct sentence, A. Give me a call tomorrow, Veronica, when you get home,so we can discuss the details of the upcoming event. B.Give me a call tomorrow, Veronica, when you get home so we can discuss the details of the upcoming event. C. Give me a call tomorrow ,...
October 20, 2015 by Terri

Math- calculus
Given f(x) = x ^ 3 - x ^ 2 -4x +4 Find the zeros of f. Write an equation of the line tangent to the graph of f at x = -1 The point (a,b) is on the graph of f and the line tangent to the graph at (a,b) passes through the point (0,-8) which is not of the graph of f. Find a and b...
September 25, 2009 by Erin

calculus
Two cars, one traveling north and one traveling west, collide at an intersection.The resulting momentum of the two cars together after the collision is 32 000 kg . m/s N30degreesW. Find the momentum of each car before the collision.
May 2, 2010 by Abi

Calculus
find the first three non-zero terms of the Maclaurin expansion of y = f (x) where the function is defined implicitly by x^2 + xy + y^2 = 1. Also estimate the error approximating f(0.1) using the first two non–zero terms of this series.
September 24, 2010 by Mark

calculus
Find the coordinates of points where the graph of f(x) has horizontal tangents. As a check, graph f(x) and see whether the points you found look as though they have horizontal tangents. f(x) = −x3 + 6x2 − 9x + 13 (x, y) = ( ? ) (smaller x-value) (x, y) = ( ? ) (...
March 10, 2011 by Adam Janky

pre-calculus
a ship passes by buoy b which is known to be 3000 yd from peninsula p. the ship is steaming east along line be and angle pbe is measured as 28 degrees. after 10 min., the ship is at s and angle pse is measured as 63 degrees. how far from the peninsula is the ship when it is at s?
October 5, 2011 by tatiana

Calculus
A man is in a boat 4 miles off a straight coast. He wants to reach a point 10 miles down the coast in the least possible time. If he can row 4 miles per hour and run 5 miles per hour, where should he land the boat?
November 16, 2011 by Lisa

Vector Calculus
An airplane is traveling in the direction 20degrees west of north at 700 km/hr. Find the component form of velocity of the airplane assuming that the positive x-axis represents due east and the positive y-axis represents due north.
January 26, 2013 by Melissa

Calculus
7) Consider the function f(x)=x2e4x. For this function there are three important intervals: (−∞,A], [A,B], and [B,∞) where A and B are the critical numbers. Find A and B For each of the following intervals, tell whether f(x) is increasing (type in INC) or ...
October 20, 2014 by Hailey

calculus
A 15-ft ladder rests against a vertical wall. If the top of the ladder slides down the wall at a rate of 0.33 ft/sec, how fast, in ft/sec, is the bottom of the ladder sliding away from the wall, at the instant when the bottom of the ladder is 9 ft from the wall? Answer with 2 ...
January 17, 2015 by george

Calculus
Graph the function f(x)= x sin( 1/x) and the equations y=|x| and y=-|x| in the same viewing window on your calculator. Then use the squeeze therom to find the limit of f(x) as it approaches zero. I graphed the function and equations, but I am confused on how to find the limit ...
August 23, 2015 by Anonymous

Calculus
The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=-k(T-A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room temperature of 30°C, how ...
March 10, 2016 by nan

Calculus
A spherical balloon is being inflated and the radius is increasing at a constant rate of 2 cm per minute. At what rates are the volume and surface area of the balloon increasing when the radius is 5 cm? For this problem do I plug in the 5 cm into the Volume formula ( 4/3 pi r^...
April 25, 2016 by Andreyall

Maths
How do I work out how much is left of something after a percent has been taken. For example: $50 has 25% taken of it how much of the $50 is left?
February 18, 2009 by kate

ALGEBRA
How can I find tHe equivalent expression of -(92u+86x-44). I thought about changing the whole expression but it did not work ex: -92u-86x+44
December 10, 2009 by Learner

Literacy
What are the comonents of a successful literacy program?Identify examples of successful programs and explai how they were able to make their programs work.
April 22, 2010 by Anonymous

physics
A 4.5 kg can of paint is sitting on top of a 0.8 meter high step ladder. How much work did you do to move the can of paint to the top of the ladder?
December 15, 2010 by Josue

Math - Domain of Composite function
Find the domain of the composite function f ₒ g . Please show all of your work. f(x) = √x; g(x) = 2x + 12
June 3, 2011 by CheezyReezy

math
Write the slope-intercept equation for the line with slope -2/3 and y-intercept (0, 3) and graph the line. Please show all of your work. (
August 3, 2011 by susan

physics
A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?
October 24, 2011 by Anonymous

physics
A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?
October 24, 2011 by Anonymous

geometry
line AB is parallel to line CD, the measurement of angle A=2x-25, and the measurement of angle C=x+5. find the value of x. show work and explain your reasoning.
October 29, 2011 by joseph

Algebra
Given the linear equation y=-4/3x+1,find the y-coordinates of the points (-6),(-3) and (6).Show work.Plot these points and graph linear equation.
March 17, 2012 by sherry

Algebra
Given the linear equation y=-4/3x+1,find the y-coordinates of the points (-6),(-3) and (6).Show work.Plot these points and graph linear equation.
March 17, 2012 by sherry

Math
Allison measures 1 5/16 teaspoons of salt. She measures another 1 11/16 teaspoons of salt. How many tablespoons does she measure altogether? Please show work
January 7, 2013 by Adaija

math
If jeff bought 2 basketballs and 3 baseballs for $10 and herman bought 3 basketballs and 4 baseballs for $15, how much is a basketball. Show all work.
June 12, 2013 by laur

physic
A force F⃗ = 12 N i^ − 10 N j^ acts on an object. How much work does this force do as the object moves from the origin to the point r⃗ = 13 m i^ + 11 m j^?
July 13, 2013 by kolam

physics
24 joule work is done in moving a charge of 6c between two points. Calculate potential difference between this two points.
May 11, 2014 by Jatindra Deori

physical
24 joule work is done in moving a charge of 6c between two points. Calculate potential difference between this two points.
May 11, 2014 by Jatindra Deori

Math
Please help me with this home work Triangle ABC ~ Triangle ADE AD=5; DB=3.5; BC=5.1; AE=6; EC=x What is the length of AB? What is the length of DE? Write an expression that represents AC? What is the length of EC? What is the length of AC? Thank you
November 11, 2015 by Kenny

Algebra
A basketball player makes 53 points on 24 shots. How many 3 pointers and 2 pointers did he shoot. Show your work. I know that the answer is 5 for the 3 pointers and 19 2 pointers but I don't know how to show it.
April 7, 2016 by Alex

Calculus help!
f(x)=e^x for 0<x<2. Imagine that you have graphed this function in the x-y plane. For each value of x in the domain, erect a square above the curve perpendicular to the x-axis and parallel to the y-z plane where one side runs from the x-axis to the curve. So the square ...
February 26, 2008 by anonymous

calculus
use a(t) = -32 ft per second squared as the acceleration due to gravity.An object is thrown vertically downward from the top of a 480-ft building with an initial velocity of 64 feet per second. With what velocity does the object hit the ground? This type of problem always ...
February 21, 2010 by sammi

Calculus
According to Kleiber's Law, the metabolic rate P (in kilocalories per day) and body mass m (in kilograms) of an animal are related by a three-quarter power law given below. Estimate the increase in metabolic rate when body mass increases from 65 to 66 kg. (Round your answer to...
September 21, 2010 by Rey

calculus
6.A manufacturer of DVD players has been selling 800 each week at 150$each. From a market survey it is discovered that for each $5 reduction in price, they will sell an extra 40DVD players each week. a)What is the demand function? b)How large a reduction in price (rebate) ...
November 23, 2010 by cynthia

Calculus
According to Kleiber's Law, the metabolic rate P (in kilocalories per day) and body mass m (in kilograms) of an animal are related by a three-quarter power law given below. Estimate the increase in metabolic rate when body mass increases from 65 to 66 kg. (Round your answer to...
February 23, 2011 by Lillian

AP Calculus
An open box is to be made from cutting squares of side 's' from each corner of a piece of cardboard that is 35" by 40". (a) Write an expression for the volume, 'V', of the box in terms of 's'. (b) Draw a graph of V(s). (c) State the domain and range of V(s). (d) Find the value...
July 17, 2013 by Casey

Calculus Practice Problems
A filter filled with liquid is in the shape of a vertex-down cone with a height of 12 inches and a diameter of 18 inches at its open (upper) end. If the liquid drips out the bottom of the filter at the constant rate of 3 cubic inches per second, how fast is the level of the ...
October 16, 2013 by Kelly

Chemistry
Quick question: How can I be sure that a slow reaction is not running out of reagents? Thanks The question is too general for a quick answer. Depending upon the reaction, intensity of color (either decreasing or increasing) might be one way, the odor of a product or one of the...
April 24, 2007 by Chrissy

Spanish 1
4. No es trabajadora. Es _____. a. atrevida b. desordenada c. perezosa d. impaciente C? 9. No me gusta _____ nadar ____ dibujar. a. sí/sí b. sí/ni c. ni/ni d. ni/tampoco I'm going with C now? 10. No soy ni generosa a. o tacaño b. ni tacaña c. ni atrevido d. o deportista ...
November 7, 2010 by mysterychicken

language arts
"this question asks about your independent reading selection. compare and contrast your independent reading selection with one or two other selections you have read this unit. support your response with at least two pieces of evidence from your independent reading selection. ...
March 16, 2016 by help!!

English
Dear Ms.Sue, thank you for your answers. May I ask you a few more questions? 1) I just want to make sure I understand it correctly. Does "Where are you hurting" mean the same as "Where do you hurt" the same as "Where does it hurt"? 2) Help me, please, with "sometimes/...
April 17, 2016 by Ilma

English
Here are the linguistic objectives which I'm going to vary as English should be the lingua franca. Is it correct to mention the objectives using the gerund??? They didn’t consider the pupils’ point of view. What do you think? 1) Linguistic objectives : - helping the pupils...
February 8, 2012 by Henry2

Pre-Calculus-check answers
If cos theta = 0.8 and 270<theta<360, find the exact value of sin 2theta a) -0.96 b) -0.6 c) 0.96 d) 0.28 Answer: b 2) If csc theta = -5/3, and theta has its terminal side in Quadrant III, find the exact value of tan 2theta a)24/25 b) 7/25 c) 24/7 d) -7/25 Thanks
August 31, 2008 by Lucy

calculus
a rectangular box with a square bottom is to have a volume of 1000 cubic inches. the bottom cost $100 per cubic inch, the sides are $25 per square inch and there is no top. what are the dimensions of the box that has materials costing the least
November 13, 2011 by kenny

Pre-Calculus
Rational Functions y = (x^2+7x-4)/(x-2) Since the degrees of both the numerator and denominator are the same, I would use the leading coefficient, and both the rational functions start with 1, so would the horizontal asymptote be 1? Also don't get how to find the horizontal ...
October 2, 2012 by Shreya

calculus
Water is pouring into a conical vessel 15cm deep and having a radius of 3.75cm across the top. If the rate at which the water rises is 2cm/sec, how fast is the water flowing into the conical vessel when the water is 4cm deep?
November 2, 2012 by Arvin

Calculus
A rectangular storage container with an open top is to have a volume of k cubic meters. The length of its base is twice its width. The material for the base costs $6 per square meters and the material for the sides costs $10 per square meter.
April 9, 2015 by Joseph

Calculus
The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=-k(T-A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room temperature of 30°C, how ...
March 11, 2016 by nan

Calculus
The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=-k(T-A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room temperature of 30°C, how ...
March 12, 2016 by Una Rosa

Calculus
Find the area of the region bounded by the curves y = x^(-1/2), y = x^(–2), y = 1, and y = 3. a) (1/2)(3)^1/2 + (4/3) b) 2*(3)^1/2 - (8/3) c) (1/2)(3)^1/2 - (32/3) d) 2*(3)^1/2 - (32/3) e) (8/3) - 2*(3)^1/2 So one thing that is throwing me off on this question is that I ...
May 24, 2016 by Emily

calculus
Find the solution to the differential equation dy/dx = (x^3)/(y^2), where y(2) = 3 I have: The integral of: dy(y^2) = the integral of: dx(x^3) (y^3)/3 = (x^4)/4 The answer is supposed to come out to be y= the cube root of: ( 3/4x + 15 ) Thanks The general solution is (y^3)/3...
May 6, 2007 by Suzie

calculus
Consider curve given by x^2+ 4y^2= 7 + 3xy.. Three part question A) show that dy/dx = 3y-2x/8y-3x B) Show that there is a point P with x-coordinate 3 at whiich the line tangent to the curve at P is horizontal. Find the y-coordinate of P. C) find the value of d^2y/ dx^2 at the ...
January 11, 2009 by Jane

calculus
Now we prove Machin's formula using the tangent addition formula: tan(A+B)= tanA+tanB/1-tanAtanB. If A= arctan(120/119) and B= -arctan(1/239), how do you show that arctan(120/119)-arctan(1/239)=arctan1?
May 23, 2010 by alex

Calculus
The height above the ground of a rider on a large Ferries wheel can be modelled by h(t)=10sin(2pi/30 t) + 12, where h is the height above the ground, in metres and t is the time in seconds. What is the maximum height reached by the rider and when does it occur? I know the max ...
June 17, 2010 by Anonymous

calculus
Two particles move along the x-axis. For 0≤t≤6, the position of particle P is p(t)=2cos(t*π/4), while the position of particle R is r(t)=t^3-6t^2+9t+3. For 0≤t≤6 find all the times which the two particles travel in opposite directions.
November 25, 2012 by nico

Calculus
The marginal revenue for x items in dollars is given by R′(x)=−4.5x+6. Determine (a) the revenue function and (b) the demand function. I know the revenue function is R(x)=6x-2.25x^2 just by finding the antiderivative. demand = revenue - cost, but how do I even find...
May 18, 2014 by Ann

Calculus
Let f and g be the functions given by f(x)=1+sin(2x) and g(x)=e^(x/2). Let R be the shaded region in the first quadrant enclosed by the graphs of f and g. A. Find the volume of the solid generated when R is revolved around the line y=pi. B. Fine the volume of the solid ...
April 19, 2015 by Anonymous

Calculus
Two sides of a triangle have lengths 8 m and 13 m. The angle between them is increasing at a rate of 0.08 radians /min. How fast is the length of the third side increasing when the angle between the sides of fixed length is π/3 radians.
February 24, 2016 by Kayla

calculus
A Veterinarian has 80 feet of fence and he wants to enclose a rectangular dog-run along the back side of his office building. He will not fence the side along the building. What are the dimensions of the dog-run that give the maximum area he desires?
December 21, 2016 by angie

Pre algebra
What kind of equation would I need for the total weekly cost if a cart rents for $92 and to buy dry ice every day for $2.50 a pound and you need 10 pounds a week. And you are supplied with bars for $0.55 each and you have to sell them for $2.75 per bar. How would I make this ...
May 15, 2008 by Sam

Chemistry
Calculate the initial molarity of KNH2 and the molarities of K+, NH3, OH-, and H3O+ in an aqueous solution that contains 0.75 g of KNH2 in 0.255 L of solution. You may ignore the reaction of NH3 with water. I already found the initial molarity, but I am not sure how to find ...
February 22, 2010 by Trixie

APChem
"The osmotic pressure of a saturated solution of strontium sulfate at 25C is 21 torr. What is the solubility product of this salt at 25C (Hint: calculate molarity from the colligative properties eqn of osmotic pressure and use it in the equilibrium expression" I converted torr...
March 17, 2010 by Kiki

Chemistry
What would be the product of the reaction of 4-methyl pyridine with Ac2O/AcOH and PhCHO? I'm really stuck on this. I'm guessing the pyridine will attack the anhydride and form an acyl pyridinium ion but I'm not sure where to go from there. If that reacts with AcOH I'll end up ...
April 21, 2010 by Alice

Business Communications
Which statement presents a negative element in a positive way? (Points: 5) The part can be replaced at no charge only if your unit is less than two years old. If your unit is too old, you will have to pay $49 for a replacement part. We cannot replace the part for free on those...
November 5, 2010 by lisa

Engineering/Physics
A force F = 7^i + 6^j - 5^k lb. acts at the origin. Find the magnitude and direction cosines of the moment of this force about point A (-4; 5; 6) ft So in this case wouldn't vector r= -4i +5j +6k and vector F = 7i + 6j - 5k lb? and r X F = -61i +22j -59k = MA [MA]= 87.67 ft-...
February 12, 2012 by Aaron

math
Hello, I'm having a hard time fingering our this question. Not really sure what formula to use. Thanks in advance! For a five year period, Ned deposited $800 each quarter into an account paying 5.6% annual interest compounded quarterly. (a) How much money was in the account at...
May 12, 2012 by lynn

bio check my answer plz???
Ideally, sustainable development should ___________. A)put the protection of the environment ahead of human needs B)provide for human needs at the expense of the environment C)use more natural resources to make goods to meet human needs D)preserve ecosystems while providing ...
December 26, 2012 by Bre

Trig
Two pilots take off from the same airport. Mason heads due south. Nancy heads 23 west of south. After 400 land miles, how far is Nancy from Mason’s route? I think 156.29, but I'm not sure because the question comes in a lesson on sum and difference identities, and ...
May 9, 2015 by Anonymous

Physics
You take a trip in your car. Starting from rest, you accelerate at 1.00 m/s2 for 10.0 s, heading north. You then stop accelerating and immediately head west at a constant speed for an additional 20.0 s, at which point, you crash into a building coming to an instant stop. At ...
April 10, 2016 by sarah

Physics
In the following sentence, is the everyday or the scientific meaning of work intended? A student works on a term paper. The everyday meaning. The physical meaning would be measured in terms of the pushing of a pencil or keyboard keys.
December 10, 2006 by Anonymous

math
in which set would 2/5, 15/36, and 24,12 be placed and why set A = 1/4, 7/25, 5/8, 3 3/5 set B = 2/3, 4/7, 11/12, 1/9, 34/18 Please note that we don't do students' homework for them. Once you have come up with a response to these questions, please re-post and let us know what ...
January 26, 2007 by bill

algebra
Worker efficiency. In a study of worker efficiency at Wong Laboratories it was found that the number of components assembled per hour by the average worker t hours after starting work could be modeled by the formula N(t)=-3t+23t^2+8t
July 13, 2009 by Sandra

sociology
Which of three theoretical perspectives best explains the fact that Americans find work roles psychologically satisfying but also find them to stressful? Functional theory conflict theory symbolic interaction theory
August 9, 2009 by paula

math-college algebra
y-3=1/2(x-6) "finding the value of a variable" x=2 I know the answer is 1, but how do I work the problem to get 1. This problem is in our text book and in the back it states the answer is 1. I tried working the problem serval times and I do not come up with one.
August 11, 2010 by dave

Physics
A car travels at a speed of 25 m/s on a flat stretch of road. The driver must maitain pressure on the accelerator to keep the car moving at a constant speed. Are there any forces doing work on the car? Explain. What is the net force?
February 3, 2011 by Kourt

Physics
A car travels at a speed of 25 m/s on a flat stretch of road. The driver must maitain pressure on the accelerator to keep the car moving at a constant speed. Are there any forces doing work on the car? Explain. What is the net force?
February 3, 2011 by Kourt

phyics
A mechanic pushes a(n) 3980 kg car from rest to a speed of v, doing 5107 J of work in the process. During this time, the car moves 29.3m. Neglect friction between car and road. Find the speed v. Answer in units of m/s.
February 27, 2011 by leslie

Physics
A box is being with a velocity v by a force P (parallel to to v) along a level horizontal floor. the normal force is Fn, the kinetic frictional force if fk, and the weight of the box is mg. Decide which forces do positive, zero or negative work and why?
February 12, 2012 by Nilan

Physics
A 200 kg wooden crate is dragged at a constant speed by a rope through a distance of 4 m along a wooden floor . The coefficient of sliding friction is .2 . If the work done is 1568 j , and the rope is horizontal, calculate the tension in the rope
March 1, 2012 by Lorna

Physics
A 200 kg wooden crate is dragged at a constant speed by a rope through a distance of 4 m along a wooden floor . The coefficient of sliding friction is .2 . If the work done is 1568 j , and the rope is horizontal, calculate the tension in the rope
March 1, 2012 by Lorna

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