Sunday

February 14, 2016
Number of results: 72,924

**Physics**

As you lift a chair to store is upside down on a desk, gravity exerts a force, mg, downward and you exert a force of the same magnitude upwards. The two forces are equal in magnitude and opposite in direction. From this is would appear that no work was done, but you know you ...
*March 21, 2012 by Becky*

**Physics**

A machine swings a mass of 1kg connected to a massless rope in a vertical circle so that the speed of them mass is constant at 8 m/s. The rope is 1.0 m long, and the center of the circle is fixed at all times. a) Find the acceleration of the mass with magnitude and direction ...
*November 12, 2013 by Robin*

**chemistry**

aspirin is synthesized through the following reaction C7H603+C4H6O3=C9H8O4=HC2H3O2 a)Assuming the maximum yield that could be obtained is 76.8% what mass of Aspirin C9H8O4 could be obtained from this reaction when 2.00 * 10^2 grams of C7H6O3 reacts with 145.30 grams of C4H6O3...
*April 24, 2014 by jackson*

**trig**

Bob throws a ball straight up with an initial speed of 50 feet per second from a height of 6 feet. (a) Find parametric equations that describe the motion of the ball as a function of time. (Do this on paper. Your instructor may ask you to turn in this work.) (b) How long is ...
*March 15, 2011 by Anonymous*

**Physics**

A 120.0 volt motor draws a current of 7.60 A when running at normal speed. The resistance of the armature wire is 0.610. (a) Determine the back emf generated by the motor. 115.364 V (b) What is the current at the instant when the motor is just turned on and has not begun to ...
*October 9, 2007 by Mary*

**Physics**

A baseball is hit at ground level. The ball is observed to reach its maximum height above ground level 3.0 s after being hit. And 2.5 s after reaching this maximum height, the ball is observed to barely clear a fence that is 97.5 m from where it was hit. How high is the fence?
*May 13, 2012 by Leah*

**Physics**

*I really don't know how to get started. I have done lots of the homework, but this one (and a couple of others) are really giving me PROBLEMS.* A stockroom worker pushes a box with a mass 10.5 kg on a horizontal surface with a constant speed of 3.00 m/s. The coeffecients of ...
*October 1, 2006 by John*

**physics**

An air puck of mass 0.33 kg is tied to a string and allowed to revolve in a circle of radius 1.12 m on a horizontal, frictionless table. The other end of the string passes through a hole in the center of the table and a mass of 1.1 kg is tied to it. The suspended mass remains ...
*December 10, 2011 by tanya*

**physics**

A ball (m=53g) is projected vertically with an initial speed of 9.2m/s. If the ball rises to a maximum height of 3.6m, how much kinetic energy is dissipated by the drag force of air resistance? I know it is .373J How much higher would the ball have gone in a vacuum??
*November 10, 2010 by dale*

**Physics **

A 19 N thrust is exerted on a 0.4 kg rocket for a time interval of 8 s as it moves straight up. (Neglect all forces except this thrust and the force of gravity.) The rocket then continues to move upward as its speed reduces steadily to zero. (a) What is the maximum height that...
*October 9, 2012 by arcos15*

**Physics **

A 19 N thrust is exerted on a 0.4 kg rocket for a time interval of 8 s as it moves straight up. (Neglect all forces except this thrust and the force of gravity.) The rocket then continues to move upward as its speed reduces steadily to zero. (a) What is the maximum height that...
*October 9, 2012 by arcos15*

**Physics**

A constant net force of 406 N, up, is applied to a stone that weighs 33 N. The upward force is applied through a distance of 2.4 m, and the stone is then released. To what height, from the point of release, will the stone rise? Thoughts: F = ma. Would the acceleration be g? ...
*December 14, 2007 by Einstein*

**Biomechsnics**

what happens if an athlete is pulling a sled angle attached to his hip, resulting in an angle of force of pull at 15 degrees to the ground. If the coefficient of sliding friction between the sled and the grass is 0.8 and the sled has a mass of 25 kg, what is the acceleration ...
*May 23, 2013 by Jim*

**Physics 12**

A block mass m1 lying on a frictionless inclined plane is connected to a mass m2 by a massless cord passing over a pulley. 1.) determine a formula for the acceleration of the system in terms of m1, m2, Ө, and g. 2.)what conditions apply to mass m1 and m2 for the ...
*February 26, 2012 by Anon*

**algebra**

lAURA OWNS A PIE COMPANY. SHE HAS LEARNED THAT HER PROFITS, P(X), FROM THE SALE OF X CASES OF PIES ARE GIVEN BY P(X)= 150X - X^2. (A) HOW MANY CASES OF PIES SHOULD SHE SELL IN ORDER TO MAXIMIZE PROFIT? (B) WHAT IS THE MAXIMUM PROFIT?
*February 18, 2010 by GERINA*

**physics**

A block M1 of mass 16.5 kg sits on top of a larger block M2 of mass 26.5 kg which sits on a flat surface. The kinetic friction coefficient between the upper and lower block is 0.425. The kinetic friction coefficient between the lower block and the flat surface is 0.125. A ...
*February 22, 2014 by Mimi*

**physics**

A block of mass m = 5 kg is attached to a spring (k = 28 N/m) by a rope that hangs over a pulley of mass M = 7 kg and radius R = 3 cm, as shown in the figure. Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and assuming the ...
*March 25, 2011 by Anonymous*

**physics**

A block of mass m = 5 kg is attached to a spring (k = 35 N/m) by a rope that hangs over a pulley of mass M = 7 kg and radius R = 4 cm, as shown in the figure. Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and assuming the ...
*April 3, 2011 by Anonymous*

**PHYSICS(PLS HELP)**

At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F⃗ = −C1rv⃗ , where C1 is a constant. At time t = 0, a small ball of mass m is projected into a liquid so that it initially has...
*October 14, 2013 by Anonymous*

**physics**

A basketball star covers 2.70 m horizontally in a jump to dunk the ball (see figure). His motion through space can be modeled as that of a particle at a point called his center of mass (which we shall define in Chapter 9). His center of mass is at elevation 1.02 m when he ...
*February 18, 2011 by eric*

**Calculus**

Assume the world population will continue to grow exponentially with a growth constant (corresponding to a doubling time of about 52 years), it takes acre of land to supply food for one person, and there are 13,500,000 square miles of arable land in in the world. How long will...
*October 13, 2011 by Isiah*

**Physics**

Two identical positive charges exert a repulsive force of 7.0 10-9 N when separated by a distance of 3.2 10-10 m. Calculate the charge of each. _C
*April 26, 2013 by Mat*

**math**

If you separate the socks with equal charges 4 x10-9 C until they’re 7 cm apart, what force will each sock exert on the other?
*March 3, 2014 by Laura*

**physics**

Assuming 100% transfer of energy in the system, please calculate maximum KE (Kinetic Energy) that the rocket has if the rocket were to again a height of 25 meters. Rocket mass = 0.5 kilograms, and gravity = 9.8 m/s^2
*December 8, 2014 by Ella*

**math**

Starting at the fourth floor, an elevator goes down 3 floors and then up 8 floors. Write a numerical expression to show at which floor does the elevator stop?
*January 28, 2016 by Evelyn*

**Calculus Physics**

A box and one force vector, F1 is shown. F1 = + 10 N. If the mass of the box is 3 kg, what is the magnitude and direction of a force, F2, that would need to be applied if the box was to have an acceleration of + 2 m/s 2 in the horizontal direction. (Indicate direction by ...
*February 18, 2015 by danny*

**physics**

A pendulum has a mass of 3-kg, a length of 2.2 meter, and swings through a (half) arc of 30 degrees. To the tenth of a Joule, what is its maximum Kinetic Energy? I just need a very simple, straightforward method of solving this problem. Unfortunately my textbook does a crappy ...
*August 14, 2010 by Skyler*

**chemistry **

Copper can be determined gravimetrically by precipitation as copper(I)thiocyanate, CuSCN. A wrought aluminum-copper sample(4.5167 g) was dissolved in a minimum amount of concentrated HCl followd by the additon of 25 ml of sulfurous acid to reduced the copper. This solution was...
*December 22, 2012 by WILL*

**Physic**

so i need to calculate the moment of inertia of the pulley and the angular acceleration of the pulley. mass A = 9kg Mass B = 15kg Inner pulley= Mass 3kg R= 6cm Outerpulley= mass 7kg R=12cm it is a composite pulley with two masses hanging. Mass A on the outer pulley held by a ...
*August 7, 2015 by john*

**Precalculus**

The volume V(t) of air (in cubic inches) in an adult's lungs t seconds after exhaling is approximately. (Do not use mixed numbers in your answer.) V(t)= 53+28.5sin(pie(t)/2-pie/2) (a) Find the maximum and minimum amount of air in the lungs. Maximum is (cubic inches) Minimum is...
*November 21, 2010 by Max*

**Managerial Economics**

Which one is the best answer 1.Agreeing to be part of a price-fixing cartel is: a.unlikely to yield maximum prices or profits for very long time b.difficult to maintain, but almost guaranteed to ensure maximum profit c.illegal in most countries d.a and b e.a and c 2.In a ...
*June 22, 2009 by Linda*

**physics**

If a loaded truck that can accelerate at 1 m/s2 loses its load and has four-fifths of its original mass, what acceleration can it attain if the same driving force acts on it?
*October 11, 2010 by Anonymous*

**Physics**

A skydiver has an air resistance force of 1193 N and a mass of 94 kg, what is her current acceleration? Take down to be POSITIVE and use g = 10 m/s/s. Please report your units as "m/s/s"
*November 2, 2010 by keith*

**Astronomy**

According to Newton's second law, when the same force acts on two bodies, the body with the larger mass will have the ________ acceleration.
*January 23, 2011 by Marie*

**physics**

A person with a mass of 77.5 kilograms is pushed on a sled across the frictionless surface of a frozen pond with a constant horizontal force of 14.8 Newtons. What is their acceleration?
*October 12, 2011 by ray*

**Physica**

A box of a mass 1500 kg slides from rest on inclined plane , as shown in figure(the angle 30) .Neglecting the Frictional force ,the magniture of its acceleration is ;
*July 15, 2012 by Q13*

**physics**

A block is at rest on the incline shown in the figure. The coefficients of static and kinetic friction are μs = 0.7 and μk = 0.59, respec- tively. The acceleration of gravity is 9.8 m/s2 What is the frictional force acting on the 29 kg mass? Answer in units of N (...
*November 10, 2013 by james*

**physics**

A string connecting a car of mass x1 on an air track is connected to another mass, x2, by a string over a pulley. If the string has appreciable mass will the car still undergo constant acceleration? Explain I think that the car will still undergo constant acceleration, the ...
*February 11, 2012 by Emily*

**visual arts (pls help)**

Can you gives some comments on the clothes which Coco Chanel had designed. Just some general comments(or some common rules or techniques she had use when she designed her clothes.) Also, can you name some famous clothes that she had designed. Thank you very much!!!!!!!
*December 17, 2013 by jasontt*

**physics**

Suppose the elevator now accelerates down- ward at a constant rate of 0.13 g. What is the ratio of the new scale reading to the value W of the scale reading when the elevator is at rest?
*November 1, 2010 by Miranda*

**Physics**

Florence who weighs 120lb stands on a bathroom scale in an elevator. What will she see the scale read when the elevator is accelerating upward at 4.0 m/s^2 a) 120lb b) 135lb 3) 105lb d) 90lb
*October 15, 2012 by Joey*

**physics**

A block is at rest on the incline shown in the figure. The coefficients of static and ki- netic friction are μs = 0.45 and μk = 0.38, respectively. The acceleration of gravity is 9.8 m/s2 . What is the frictional force acting on the 25 kg mass? Answer in units of N ...
*October 1, 2013 by Anonymous*

**Math**

An elevator, when full, holds 20 children or 15 adults. If 12 children are on the elevator, how many adults can still get on? Use an algebraic equation to solve this problem.
*February 26, 2008 by Jay*

**math**

a man and a woman get into an elevator in the basement of a building. The elevator can let them off at any floor from 1 to 9. What is the probability that they both get off on the same floor?
*April 22, 2013 by Anonymous*

**Chemistry**

At –10.00 °C (a common temperature for household freezers), what is the maximum mass of fructose (C6H12O6) you can add to 1.00 kg of pure water and still have the solution freeze? Assume that fructose is a molecular solid and does not ionize when it dissolves in water.
*February 21, 2012 by Heather*

**Chemistry**

What is the maximum mass of copper(ii) sulphate pentahydrate, CuSO4.5H2O, which could be obtained by crystallizing the solution? Ar: H=1; O=16; S=32; Cu=63.5 I'm not looking for someone to do it all, although that would help. Just that someone could give me guidance and give ...
*December 3, 2015 by Owen*

**chemistry**

the reaction of methane and water is one way to prepare hydrogen for use as a fuel: methanw react with water to from carbonmonoxide and hydrogen if you begin with 995g of methane and 2510g of water, 1.which reactant is the limiting reactant? 2.what is the maximum mass of ...
*February 13, 2016 by dennis*

**Physics**

Please help ~ Two blocks are arranged at the ends of a massless string as 3.21 kg (box hanging from table) 4.96 kg (box on table). The system starts from rest. When the 3.21 kg mass has fallen through 0.4 m, its downward speed is 1.27 m/s. The acceleration of gravity is 9.8 m/...
*February 21, 2011 by CR*

**PHYSICS**

The drawing shows a large cube (mass = 34 kg) being accelerated across a horizontal frictionless surface by a horizontal force P. A small cube (mass = 3.3 kg) is in contact with the front surface of the large cube and will slide downward unless P is sufficiently large. The ...
*June 4, 2007 by MJ*

**statistics**

If a major Internet store wants to estimate the percentage of adult Internet shoppers in order to determine the maximum impact of Internet shoppers on its sales, what amount of the shoppers should be used as a sample?
*June 21, 2010 by Trish R*

**Math**

Could someone verify the answers. I don't know question C and D Thank you! 1. In physics, the formula for centripetal force is F = mv^2/ r where m is the mass, v the velocity, and r the radius. a) Find the length of a string when a mass of 2.4kg is being spun at a speed of 5 m...
*January 12, 2012 by Casey*

**Physics**

When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 914 N and the drag force has a magnitude of 1120 N. The mass of the sky ...
*October 3, 2012 by Donald*

**Physics Please Help**

A point charge of charge 1 mC and mass 100 g is attached to a non-conducting massless rod of length 10 cm. The other end of the rod is attached to a two-dimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel to the y-z plane (...
*May 18, 2013 by Mathslover*

**physics**

A learner with a mass of 40 kg rides on a skate board with a mass of 3 kg. The resultant force on the learner and the skate board is 90 N. Calculate his acceleration.
*April 11, 2013 by Anonymous*

**physics**

A learner with a mass of 40 kg rides on a skate board with a mass of 3 kg. The resultant force on the learner and the skate board is 90 N. Calculate his acceleration.
*April 11, 2013 by Anonymous*

**physics**

A child accelerates upwards in an elevator which causes his apparent weight to become 405N. Determine the magnitude of the elevators acceleration if his normal weight is 400N.
*March 29, 2013 by maddi*

**physics- please help!**

Suppose you use a piece of fishing line to hang a large object from the ceiling. The line has a test strength of 125 lbs. Convert this to newtons, and determine the maximum mass that can be supported before the line breaks
*July 20, 2012 by LYNN*

**physics**

A mass of 2.9 kg is hanging vertically from a string with a length of 2.4 meters. It is then raised to an angle of 50 degrees with the vertical and given some velocity, v. If the string breaks at a tension of 163.8 Newtons, what is the maximum value for v such that the string ...
*October 31, 2012 by Chelsea*

**physics**

A curve of radius 60m is banked so that a car traveling with uniform speed 70km/hr can round the curve without relying on friction to keep it from slipping to its left or right. The acceleration of gravity is 9.8m/s^2. What the the Angle of the curve? im using a=v^2/r, but ...
*September 17, 2006 by puff puff*

**physics**

Four acrobats of mass 61.0 kg, 68.0 kg, 62.0 kg, and 55.0 kg form a human tower, with each acrobat standing on the shoulders of another acrobat. The 61.0-kg acrobat is at the bottom of the tower. If the area of each of the 61.0-kg acrobat's shoes is 370 cm2, what average ...
*April 4, 2013 by Dan*

**Physics**

A single 11 Newton force is applied to an object of mass 19 kg. What is the acceleration of this object in m/s2
*January 3, 2010 by Aly*

**Science**

If James pushed a box with the acceleration of 25 m/s2 with a force of 50N, what is the mass of the box?
*November 15, 2010 by klk*

**Physical Science**

A force of 20 Newtons gives a brick an acceleration of 5 m/s^2. What is the mass of the brick?
*January 31, 2012 by Maci*

**Physical Science**

A force of 20 Newtons gives a brick an acceleration of 5 m/s^2. What is the mass of the brick?
*February 1, 2012 by Jess*

**physital sciene**

How much force is exerted on a sled if the mass of the sled is 65 kg and the acceleration is 4m/s2
*August 29, 2013 by jjessica*

**physics**

A jet plane lands in an airport with a speed of 125 m/s and can accelerate uniformly at a maximum rate of -9.8 m/s2 as it comes to rest. What should be the minimum length of the runway so that the jet plane can land in the airport safely?
*January 30, 2015 by james*

**Science**

1)What is the relationship between inertia and mass? 2)Jellyfish sometimes squeeze in the side of their bodies.This pushes a stream of water from the back end of their bodies,according to newtons third law of motion,How will this behavior affect the movement of the jelly fish...
*February 4, 2015 by Anonymous*

**Physics**

An equilateral triangle 10.0 m on a side has a 1.00-kg mass at one corner, a 2.00-kg mass at another corner, and a 3.00-kg mass at the third corner. Find the magnitude of the net force acting on the 1.00 kg- mass. Find the direction of the net force acting on the 1.00-kg mass...
*November 9, 2011 by Cooper*

**Physics**

An equilateral triangle 10.0 m on a side has a 1.00-kg mass at one corner, a 2.00-kg mass at another corner, and a 3.00-kg mass at the third corner. Find the magnitude of the net force acting on the 1.00 kg- mass. Find the direction of the net force acting on the 1.00-kg mass...
*November 9, 2011 by Cooper*

**Science**

An object with a mass of 58.2 kg is accelerated by a force of 320 N. What is the acceleration of that object?
*January 10, 2014 by Linda*

**Physics **

A force of 64 N is applied on a body producing an acceleration of 2.4 m/s^2. What is the mass of a body?
*August 29, 2015 by Liz*

**science**

The net force on a rock with a mass of 2.0kg is 19.6N. What is the acceleration of the rock?
*September 26, 2015 by Liea*

**PHYSICS**

A yo-yo-shaped device mounted on a horizontal frictionless axis is used to lift a 19-kg box. The outer radius R of the device is 0.50 m, and the radius r of the hub is 0.20 m. When a constant horizontal force Fapp of magnitude 154 N is applied to a rope wrapped around the ...
*March 24, 2007 by Calvin*

**Math**

I need an expiation on a math concept, because I know the right answer, I just don't know why it is The problem says to find the absolute maximum and minimum of the function f(x)=x^3-12x over the interval [-5, 2] I found the 1st der. 3x^2-12 and set equal to zero, got the x ...
*October 9, 2014 by Eiban*

**Physics**

A small 7.10kg rocket burns fuel that exerts a time-varying upward force on the rocket. This force obeys the equation F = A + Bt^2. Measurements show that at t = 0, the force is 121.0N, and at the end of the first 2.10s , it is 176.0N. Part A Find the net force on this rocket ...
*September 20, 2009 by Dreskillz89*

**physics/ torques**

A block of mass m = 5 kg is attached to a spring (k = 35 N/m) by a rope that hangs over a pulley of mass M = 7 kg and radius R = 4 cm, as shown in the figure. Treating the pulley as a solid homogeneous disk, neglecting friction at the axle of the pulley, and assuming the ...
*April 3, 2011 by HELP!!!!*

**Math ms. Sue please help**

Carrie decided to walk the 8 3/10 mi from her house to the city pool. In the first hour, she walked 2 4/5 mi. In the second hour she walked 3 9/10 mi. How much farth did she have to go? I got 1 3/5 mi is that correct? Donald duck set a record when he caught a salmo that ...
*September 11, 2013 by Gabby*

**physics**

A projectile is projected with speed u at an angle alpha on an inclined plane of inclination angle bita. Find time of flight nn inclined plane and maximum height attained by projectile w.r.t. Inclined plane, range of projectile on inclined plane, angle of projection for which ...
*July 24, 2011 by Shivam*

**physics**

An astronaut on the Moon fires a projectile from a launcher on a level surface so as to get the maximum range. If the launcher gives the projectile a muzzle velocity of 23 m/s, what is the range of the projectile? [Hint: The acceleration due to gravity on the Moon is only one...
*November 7, 2010 by ayanna*

**Math**

) If you are standing near the edge of the top of a 200 ft. building and throw a ball vertically upward it will be modeled by the function 𝑠(𝑡) = −16𝑡2 + 64𝑡 + 200 where s(t) is the balls height above ground in feet and t is seconds after ...
*December 4, 2014 by Kevin*

**Physics **

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 200 N applied to its edge causes the wheel to have an angular acceleration of 1.048 rad/s2. (a) What is the moment of ...
*October 28, 2014 by Brittany *

**Business Calculus**

The function f(x)=4x+9x^-1 has one local minimum and one local maximum. Question: This function has a local minimum at x=______ with a value _______ and a local maximum at x=________ with value _______?
*May 2, 2008 by Daniela Davila*

**Maths**

In the formula , F= ma, F = Force (N) , m = mass (Kg) and a = acceleration (m/s²) a) Find F , if m = 26.5kg and a = 2.4m/s² b) Find a , if F = 86N and m = 10.2Kg
*January 31, 2009 by Renee <3*

**physics**

if an object has a net force of 60N east and mass of the object is 60kg what is it's acceleration?
*October 20, 2009 by george*

**science**

If Sally is pulling a toy car with mass of 20g with a force of 7N, what is the car's acceleration?
*November 15, 2010 by klk*

**Physics**

You push with a force of 22.5 N on a loaded shopping cart that has a total mass of 80 kg. What is the acceleration of the cart?
*January 5, 2012 by Jordyn*

**physical science**

If the mass of a plane is 2,500 kg and the net force on it is 14,000 N, what is the plane's acceleration?
*May 14, 2013 by Annabeth*

**science**

A force of 20 n gives a ball an acceleration of 4.0 m/s3 on a lever frictionless surface. what is the mass of the ball?
*June 17, 2014 by Joey*

**physics**

what acceleration is imported to a football when the player kicked it with a force of 25 N mass of football 0.40kg
*June 22, 2015 by Anonymous*

**Physics 194**

Light of wavelength 630 nm passes through a grating and then onto a screen located several meters from the grating. The 1st order bright band is located 0.26m from the central maximum. Light from a second source produces a band 0.21m from the central maximum. Determine the ...
*April 25, 2014 by BULturp*

**Physics**

(10 points) 3. Use your data from Part 3 and Newton’s laws to explain why the force meter measures a force if the cart is moving at a constant velocity. The forces acting on the cart are the applied force (FA), the force of friction (Ff), weight (Fg) and the normal force (FN...
*October 29, 2010 by Margaret Yeager*

**physics **

A ranger in a national park is driving along at 17.9 m/s when a deer jumps into the road 65. m ahead of the vehicle. After a reaction time of t seconds, the ranger applies her brakes, which produce an acceleration of -2.8 m/s2. What is the maximum reaction time she can have if...
*August 21, 2012 by tyler*

**physical sciences **

Two forces of 5N and 7N respectively act on an object. (A)when will the resultant of the two vectors be at a maximum? (B)when will the resultant of the two vectors be at a minimum? (C)what are the maximum and minimum resultant of the two forces?
*January 16, 2014 by fortunate *

**earth**

Some people have proposed building a giant elevator from Earth's surface to geosynchronous orbit. The top of the elevator would then have the same orbital distance and period as any satellite in geosynchronous orbit. Suppose you were to let go of an object at the top of the ...
*October 7, 2011 by kendra*

**math**

Houston Community College is planning to construct a rectangular parking lot on land bordered on one side by a highway. The plan is to use 640 ft of fencing to fence off the other three sides. What should the dimensions of the lot be if the enclosed area is to be a maximum?
*April 14, 2014 by Ashley*

**math**

A college is planning to construct a retangular parking lot on land bordered on one side by a highway. The plan is to use 680 feet of fencing to fence off the other three sides. What dimensions should the lot have if the enclosed area is to be a maximum?
*April 26, 2015 by ddot*

**finance**

Winnebagel Corp. currently sells 29,400 motor homes per year at $44,100 each, and 11,760 luxury motor coaches per year at $83,300 each. The company wants to introduce a new portable camper to fill out its product line; it hopes to sell 20,580 of these campers per year at $11,...
*April 16, 2012 by angiza*

**Physics **

A horizontal force, F1 = 85 N, and a force, F2 = 18.4 N acting at an angle of θ to the horizontal, are applied to a block of mass m = 2.1 kg. The coefficient of kinetic friction between the block and the surface is μk = 0.2. The block is moving to the right. A. Solve...
*October 9, 2014 by Harry*

**physics**

a hydraulic lift is designed for a gain of 100, so that a 10 N force applied at theinput piston will produce a force of 1,000 N at the output piston. If the radius of the input piston is 2 cm, the radius of the output is a) 200 cm, b) .02 cm c) 400 d) 20 e) .05
*January 8, 2012 by anna*

**active physics**

from the question we just did, how much force is neede to stop in 20 seconds! OK. think it through. If it's going at 10 m/s, and then it stops, what is it's change in velocity? is it 10 Yes, now it takes 20 seconds, so what is its acceleration (actually deceleration)? can u ...
*November 2, 2006 by alejandra*