Thursday

July 24, 2014

July 24, 2014

Number of results: 20,717

**Stats**

The countries of Europe report that 46% of the labor force is female. The United Nations wonders if the percentage of females in the labor force is the same in the United States. Representatives from the United States Department of Labor plan to check a random sample from 10,...
*October 31, 2007 by LT*

**Statistics**

The level of nitrogen oxides (NOX) in the exhaust of a particular car model varies with mean 0.9 grams per mile and standard deviation 0.15 grams per mile . (a) What sample size is needed so that the standard deviation of the sampling distribution is 0.01 grams per mile ?
*January 12, 2012 by Terra *

**Physics **

A bicyclist rides 2.78 km due east, while the resistive force from the air has a magnitude of 6.52 N and points due west. The rider then turns around and rides 2.78 km due west, back to her starting point. The resistive force from the air on the return trip has a magnitude of ...
*February 26, 2013 by Randy*

**Physics**

As a fish jumps vertically out of the water, assume that only two significant forces act on it: an upward force F exerted by the tail fin and the downward force due to gravity. A record Chinook salmon has a length of 1.50 m and a mass of 53.5 kg. If this fish is moving upward ...
*May 3, 2013 by Abdullahi A.*

**Physics/Barycentre**

I read the Earth/Moon Barycentre is located 74/100ths from the centre of the earth towards the earths surface. As the moons orbit varies from Perigee to Apogee by more than 30,000 miles I would have thought the Barycentre would move around according to the moons position in ...
*October 15, 2007 by Mike*

**algebra**

A leaky value on the water meter the residents for one gallon of water every 1 1/3 months the overcharged amount w varies directly with time t find the equation that models this direct variation how many months it will take for the residents to be overcharged for 5 gallons of ...
*March 4, 2014 by snow*

**Science **

To lift a load to the roof, you apply 21 N of force to a pulley. The pulley applies 21 N of force to the load. What is the mechanical advantage of the pulley? A.0 B.1 C.40 D.21
*May 21, 2014 by Shelin*

**Physics**

Consider a particle undergoing positive acceleration. (1) what is the shape of the position-time graph? (2) How do we determine an instantaneous velocity from the position-time graph?
*October 2, 2011 by Nick*

**Physics**

A 325-kg boat is sailing 15.0° north of east at a speed of 2.00 m/s. Thirty seconds later, it is sailing 35.0° north of east at a speed of 4.00 m/s. During this time, three forces act on the boat: a 31.0-N force directed 15.0° north of east (due to an auxiliary engine), a 23.0...
*November 13, 2009 by Litany*

**Physics**

A 325-kg boat is sailing 15.0° north of east at a speed of 2.00 m/s. Thirty seconds later, it is sailing 35.0° north of east at a speed of 4.00 m/s. During this time, three forces act on the boat: a 31.0-N force directed 15.0° north of east (due to an auxiliary engine), a 23.0...
*November 13, 2009 by Litany*

**Physics**

A 358-kg boat is sailing 15.9° north of east at a speed of 1.80 m/s. Thirty seconds later, it is sailing 36.6° north of east at a speed of 3.68 m/s. During this time, three forces act on the boat: a 29.7-N force directed 15.9° north of east (due to an auxiliary engine), a 23.9...
*September 22, 2011 by Jasmin*

**physics**

A 358-kg boat is sailing 15.9° north of east at a speed of 1.80 m/s. Thirty seconds later, it is sailing 36.6° north of east at a speed of 3.68 m/s. During this time, three forces act on the boat: a 29.7-N force directed 15.9° north of east (due to an auxiliary engine), a 23.9...
*September 23, 2011 by Jasmin*

**Physics**

A 343-kg boat is sailing 16.2° north of east at a speed of 1.98 m/s. Thirty seconds later, it is sailing 37.5° north of east at a speed of 3.76 m/s. During this time, three forces act on the boat: a 30.3-N force directed 16.2° north of east (due to an auxiliary engine), a 22.3...
*February 12, 2012 by Natasha*

**PHYSICS**

RESPONDING TO AN ALARM, A 102 KG FIREMAN GETS UP FROM DINNER AND SLIDES DOWN A POLE TO THE GROUND FLOOR OF THE BUILDING, 3.3 M BELOW. THE FIREMEN STARTS AT REST AND LANDS ON THE GROUND FLOOR WITH A SPEED OF 4.2 M/S. A.FIND THE FORCE EXERTED ON THE FIREMEN BY THE POLICE. B.IF ...
*March 23, 2010 by Stacy*

**Physics**

According to Boyle's law, the volume V of a gas at a constant temperature varies inversely with the pressure P. When the volume of a certain gas is 125 cubic meters, the pressure is 20 psi (pounds per square inch). If the volume of gas is increased to 400 cubic meters, the ...
*May 25, 2012 by Pat*

**Calculus**

The hemispherical tank shown is full of water. Given that water weighs 62.5 lb/ft3, find the work required to pump the water out of the tank. ---------- What is shown is just the tank (a hemisphere) with a radius of 5 ft. ---------- First I calculated the Volume of the ...
*June 18, 2007 by COFFEE*

**Physics**

Assume that in interstellar space the distance between two electrons is about 0.87 cm. The electric force between them are repulsive. Calculate the electric force between these two electrons. The value of the Coulomb constant 9 × 109 N · m2/C2 and the elemental charge is 1.6...
*March 3, 2013 by Terry*

**Physics**

You stick a paper onto a fridge with a magnet. There are two free body diagrams, one for the paper and one for the magnet. What are the forces acting on each object, which way do they point?
*November 3, 2013 by Samantha*

**Physics**

You stick a paper onto a fridge with a magnet. There are two free body diagrams, one for the paper and one for the magnet. What are the forces acting on each object, which way do they point?
*November 3, 2013 by Samantha*

**Physics**

You stick a paper onto a fridge with a magnet. There are two free body diagrams, one for the paper and one for the magnet. What are the forces acting on each object, which way do they point?
*November 3, 2013 by Samantha*

**physics**

a.)if a person is trying to throw and object with a mass of 2000kg, how much force must they use to lift it? b.) in throwing it, the person accelerates the object from rest to 25m/s in 1.5 meters. How much force is used to do this?
*November 28, 2010 by Anonymous*

**physics**

a.)if a person is trying to throw and object with a mass of 2000kg, how much force must they use to lift it? b.) in throwing it, the person accelerates the object from rest to 25m/s in 1.5 meters. How much force is used to do this?
*November 28, 2010 by Anonymous*

**physics**

A car that weighs 15,000 N is initially moving at 60km/hr when the brakes are applied. The car is brought to a stop in 30m. Assuming the force applied by the brakes is constant, determine the magnitude of the braking force.
*June 11, 2011 by Dale*

**physics**

A force is applied to a 2.6 kg mass and produces 2.7 m/s^2 acceleration. What acceleration would be produced by the same force applied to 14.9 kg mass? Answer in units of m/s^2 Here is my work, but i wanted to make sure if it was right or not: 2.6(2.7)=7.02 7.02/14.9=.471 m/s^2
*July 2, 2011 by alexa*

**Physics**

A 15 kg box sits on a horizontal force. the coefficient of static fricition between the box and the surface is 0.70. if a force P is exerted on the box at an angle directed 37 degrees below the horizontal, what must be the magnitude of P to get the box moving??
*August 26, 2012 by Teresa*

**Physics**

A 15 kg box sits on a horizontal force. the coefficient of static fricition between the box and the surface is 0.70. if a force P is exerted on the box at an angle directed 37 degrees below the horizontal, what must be the magnitude of P to get the box moving??
*August 27, 2012 by Daniella*

**Physics**

Acceleration due to gravity is independent of mass, but the force is not. Determine the final velocity of the following objects and the force generated by the same objects as they are dropped from the given heights. 10 kg 2.5 meters 7 kg 5.5 meters 0.5 kg 12 meters 0.7 kg 5 ...
*April 5, 2014 by Anonymous*

**Algebra Variation Constant**

What does this mean? Do I graph this or what? Find the variation constant and an equation of variation where y varies directly as x and y=12 when x=2 The variation constant =? The equation of variation is y=?
*February 27, 2008 by Micah*

**Critical Reading- Ms.Sue**

Hello Again, I came across another questions I have... One way a critical reader can synthesize ideas on related issues from varies sources is to A.) analyze the sources for objectivity? B.) select the most popular writers in these sources? Or C.) decide if the issues are part...
*September 23, 2010 by Jessie*

**College Physics**

A 22 turn circular coil of radius 5.00 cm and resistance 1.00 is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.0100t + 0.0400t2, where t is in seconds and B is in...
*March 15, 2012 by Anand*

**Science**

when working with the particle theory, for which changes of state does the volume increase? and Decrease? volume changes greatly when going to the gas state. what part of the system is missing
*February 14, 2007 by tesa*

**Calc**

For positive constants k and g, the velocity, v, of a particle of mass m at time t is given by v= mg/k(1−e^(−kt/m)) At what rate is the velocity is changing at time 0? At t=1? What do your answers tell you about the motion?
*March 31, 2011 by Alisa*

**physics**

A particle has an initial horizontal velocity of 2.9 m/s and an initial upward velocity of 4.5 m/s. It is then given a horizontal accelera- tion of 1.2 m/s2 and a downward acceleration of 1.2 m/s2. What is its speed after 4.9 s? Answer in units of m/s
*October 25, 2012 by Sonia*

**Physics**

What is the momentum of a two-particle system composed of a 1400 kg car moving east at 90 m/s and a second 900 kg car moving west at 95 m/s? Let east be the positive direction.
*December 12, 2012 by Anonymous*

**mt**

a particle p starts from a point a with velocity 4m/s.if it is moving along a strait line ab with an acceleration of -1.5t^2 at a time t seconds, find acceleration,diplacment after ten seconds,velocity
*March 19, 2013 by Anonymous*

**Dynamics**

A particle moving along a straight line is subjected to a deceleration a=-2v^3 m/s2. If it has a velocity v=8 m/s and a position x=10 m when t=0, determine its velocity and position when t=4s. I tried to integrate the deceleration equation, but it didn't work.
*July 11, 2014 by Dynamics Problems*

**Statistics**

1. The Chi-square distribution, used in the Chi-square test of independence, varies in shape by degrees of freedom. What does the Chi-square distribution look like for 4 degrees of freedom. A) Unimodal and symmetric. B) Bimodal and symmetric. C) Unimodal and skewed to the left...
*December 1, 2013 by War Eagle*

**physic**

A turnbuckle is needed to apply an 8kN force on a cable. If the efficiency of the turnbuckle is 40% and the force applied is 159.155N with a lever of 20cm in length. a) Find the mechanical advantage. b) Find the velocity ratio. c) Find the mean pitch of thread.
*April 2, 2009 by luc*

**Physics**

A model rock is shot into the air. Once it starts to fall a parachute is deployed. Draw a free body diagram of the rocket with the parachute deployed ok well there is gravity does the parachute exert a force upward? onto what? what do i call this force?
*August 28, 2009 by Physics*

**physics**

In a tug-of-war between two athletes, each pulls on the rope with a force of 270 N. What is the tension in the rope? ______ N If the rope does not move, what horizontal force does each athlete exert against the ground? ______ N is the first on 250 and is the second one 0?
*October 20, 2009 by Ashlynn*

**physics**

A 297-kg motorcycle is accelerating up along a ramp that is inclined 25.9° above the horizontal. The propulsion force pushing the motorcycle up the ramp is 3156 N, and air resistance produces a force of 300 N that opposes the motion. Find the magnitude of the motorcycle's ...
*September 25, 2012 by Kristie*

**physics**

A 301-kg motorcycle is accelerating up along a ramp that is inclined 30.0º above the horizontal. The propulsion force pushing the motorcycle up the ramp is 3420 N, and air resistance produces a force of 230 N that opposes the motion. Find the magnitude of the motorcycle's ...
*October 3, 2012 by jean*

**Physics**

At the instant a race began, a 89.1 kg sprinter exerted a force of 710 N on the starting block in the direction 110 degrees measured clockwise from the positive x-axis. (a) What was the horizontal acceleration of the sprinter? a_x = (b) If the force was exerted for 0.7 s, ...
*February 21, 2014 by Rylan*

**Math**

Two forces of magnitude 15N and 4root2N are acting in the directions 3i-4j and i+j respectively, find the magnitude of the resultant of the two forces.
*May 8, 2014 by Liam*

**Physics**

I'm not sure how to go about solving this problem the algebra gets very messy... At what distance formt he EArth will a spacecraft on the way to the Moon experiance zero net force due to there two bodies because the Earth and Moon pull with equal and opposite force? THANKS
*December 23, 2009 by Jake*

**Physics**

The tops of the towers of the Golden Gate Bridge, in San Francisco, are 227m above the water. Suppose a worker drops a wrench from the top of a tower. If the average force of air resistance is 22% of the force of free fall, with what speed will the wrench hit the water?
*November 6, 2011 by Danielle*

**physics**

A 62 kg water skier, moving at 14 m/s , lets go of the towline. a.Find her momentum. 868kgm/s b.What impulse is needed to bring her to rest? -868Ns c.If the water exerts an average force of -275 N on the skier, how long must the force act? 3.16 s d.How far does she travel ...
*January 4, 2012 by JW*

**Physics**

A 62 kg water skier, moving at 14 m/s , lets go of the towline. a.Find her momentum. 868kgm/s b.What impulse is needed to bring her to rest? -868Ns c.If the water exerts an average force of -275 N on the skier, how long must the force act? 3.16 s d.How far does she travel ...
*January 4, 2012 by DB*

**physics**

A cylinder of mass M=58 kg, radius R=1.3 m and moment of inertia I=(1/2)MR2 is initially rotating around its central axis with an angular velocity ωi= 1.8 rad/s. A tangential force F of constant magnitude applied to the edge of the cylinder during 5.9 s brings it to rest...
*March 25, 2012 by katie*

**Physics**

A 46.4-N force is applied to the outer edge of a door of width 1.26 m in such a way that it acts (a) perpendicular to the door (b) at an angle of 43.0 degrees with respect to the door surface, (c) so that the line of action of the force passes through the axis of the door ...
*October 30, 2012 by Anonymous*

**physics**

the coefficients of static and kinetic friction for stone on wood are, respectively, 0.5 and 0.4. if a 150 kg stone statue is pushed with just enough force to start moving across a wooden floor and the same force continues to act afterward. find the statue’s acceleration.
*November 7, 2012 by tom*

**physics**

An object is in equilibrium under the action of three forces.Two of these forces,A an B,are illustrated in the accompanying diagram.The third force,F,is not illustrated. 3.1What is meant by the resultant of A and B? 3.2Determine by means of accurate construction and ...
*February 6, 2013 by sphelele*

**physics**

A woman does 340 J of work to move a table 4 m across the floor. What is the magnitude of the force that the woman applied to the table if this force is applied in the horizontal direction?
*February 2, 2010 by Anonymous*

**physics**

A woman does 340 J of work to move a table 4 m across the floor. What is the magnitude of the force that the woman applied to the table if this force is applied in the horizontal direction?
*February 2, 2010 by Anonymous*

**Science**

A man pushes a lawn mower on a level lawn with a force of 203 N. If 44% of the force is directed horizontally, how much work is done by the man in pushing the mower 5.4 m?
*September 19, 2012 by KeKe*

**Phtsics**

Two identical point charges are separated by a distance of 3.0 cm and they repel each other with a force of 4 X 10^-5 N. What is the new force if the distance between the point charges is doubled?
*February 14, 2013 by Adrian*

**Physics**

A 4kg mass is pushed with a constant force for 1m then off the edge of the table and lands 7m from the edge of the table. a) What was the force pushing on the mass? b) What is the resultant velocity?
*March 7, 2013 by Emma*

**Physics**

The average energy flux in the sunlight on the Earth is ⟨S⟩=1.4×103 W/m2. You might need to use some of the following constants: Distance from earth to the sun=AU=150×109m REarth=6.4×106m RSun=7.0×108m G=6.67×10−11m3/(kgs2) MEarth=5.97219×1024kg MSun=1.9891...
*May 22, 2013 by Annoyingmous*

**physics**

An object of weight 50 N is suspended vertically by two strings. The strings are of the same lenght and the angle between them is 60 degree. Draw a free body diagram of the forces acting on the object. Calculate the tension in the strings.
*March 15, 2014 by waslat *

**Physics**

2. Tyler pulls a box full of baby ferrets across the floor by means of a rope that is tied to the box. The rope makes an angle of 41 degrees with the horizontal and tyler pulls on the rope with a force of 60N. a)What is the horizontal component of the force that tyler is ...
*June 21, 2011 by Molly*

**science(2 Qs)**

PLEASE ANSWER MY 2 QUESTIONS IN SCIENCE THANKS 3.when a negatively charged object moves in the opposite direction of an electric force field,the potential energy of the object. A.becomes zero(I PICK THIS) B.increases C.decreases D.stays the same 4.the two south pole ends of ...
*February 2, 2014 by Anonymous*

**math,help**

I definately do not understand this problem. If y varies directly with x, and y = 600 when x = 1000, find the constant of variation K. If y is directonally (proportional) to x, then for every value of x there is a value for y multiplied by a constant value. So if was that we ...
*March 31, 2007 by jacky*

**physics**

Two identical balls are moving at the same speed of 3 m/s toward each other. With no external forces acting, what would be the magnitude (value) of the total momentum of the two balls after collision? (Express your answer as a number, not in words)
*October 13, 2012 by Anonymous*

**English**

When a piece of clothing is SPLICED, what has happened to it? a. it has been completely worn out b. it has been washed and dried c. it has been burned in fire d. it has been cut into strips B? An ORATOR entertains people by a. dancing b. singing c. acting d. speaking D
*January 16, 2014 by Anonymous*

**physics**

Right after clearing the launch tower, the space shuttle is accelerating upward at 6 m/s/s. Calculate the net force on an 80 kg astronaut during this acceleration and the force that the seat must exert on the astronaut during this acceleration.
*October 26, 2010 by Lynn*

**help! physics**

Right after clearing the launch tower, the space shuttle is accelerating upward at 6 m/s/s. Calculate the net force on an 80 kg astronaut during this acceleration and the force that the seat must exert on the astronaut during this acceleration.
*October 26, 2010 by Lynn*

**college Physics**

Q. A force F = (3.99xi + 2.86yj) N acts on an object as it moves in the x direction from the origin to x = 4.45 m. Calculate the work done on the object by the force. Attemp: since we only consider x direction i multiplied 3.99 by 4.45 but it didnt work out.
*October 28, 2010 by Lyn*

**physics**

You push an 37.4-kg box up an incline with an angle of 25 degrees to the horizontal with a force of 230-N. 1. What is the component of the crate's weight parallel to the surface? 2. What is the sum of the forces parallel to the surface? 3. What is the force due to friction? 4...
*November 7, 2010 by Katherine*

**Physics**

Two forces act concurrently on a point P. One force is 60nt due east. The second force is 80nt due north. (a) Find the magnitude and direction of their resultant. (b) What is the magnitude and direction of the equilibriant?
*January 17, 2011 by Elise*

**physics**

object A exerts a gravitational force of magnitude 8.2 x 10^-10 N on object B. determine the magnitude of the gravitational force if, simultaneously, the separation distance is tripled, mA increased by 4 times and m8 is halved. explain your reasons and show all calculations.
*March 31, 2011 by OMar*

**Science (Force and motion)**

Explain how acceleration can be slowing down. Calculate the impact force of a 50 kg object travelling at 100km/hr. (Momentum = mass x velocity) Calculate the momentum of a tennis ball of 50 g moving at a velocity of 25m/s.
*May 3, 2011 by maria*

**physics**

object A exerts a gravitational force of magnitude 8.2 x 10^-10 N on object B. determine the magnitude of the gravitational force if, simultaneously, the separation distance is tripled, mA increased by 4 times and m8 is halved. explain your reasons and show all calculations.
*October 14, 2011 by luna*

**Physics**

Two electrons are separated by 1 meter. What is the ratio of the magnitude of the electric force on one electron and the gravitational force on that electron due to the other electron? The charge of an electron is 1.6×10−19C and its mass is 9.1×10−31kg.
*February 22, 2013 by P*

**physics**

You are in the supermarket, pushing a cart with a force of 79 Newtons in the horizontal direction. There is a constant force of kinetic friction operating on the cart of 14.2 Newtons. Calculate the net work done on the cart, if the cart is displaced 1.2 metres in a straight line.
*May 25, 2014 by naser*

**PHYSICS**

a locomotive pulls 10 identical freight cars. the force between the locomotive and the first car is 100,000 Newtons, and the acceleration of the train is 2m/s^2. there is no friction to consider.what is the force between the ninth and tenth cars?
*July 5, 2014 by EMMA*

**PHYSICS**

a locomotive pulls 10 identical freight cars. the force between the locomotive and the first car is 100,000 Newtons, and the acceleration of the train is 2m/s^2. there is no friction to consider.what is the force between the ninth and tenth cars?
*July 7, 2014 by EMMA*

**physics**

A. A uniform, upward-pointing electric field E of magnitude 3.00 10e3 N/C has been set up between two horizontal plates by charging the lower plate positively and the upper plate negatively. The plates have length L = 4 cm and separation d = 2.00 cm. An electron is then shot ...
*January 21, 2010 by Andy *

**physics**

Two forces,F1 and F2, act at a point. F1 has a magnitude of 8.00 N and is directed at an angle of 56.0 degrees above the negative x axis in the second quadrant. F2 has a magnitude of 5.00 N and is directed at an angle of 52.9 degrees below the negative x axis in the third ...
*May 30, 2011 by physics please describe process*

**Physics**

A physics student of mass mm = 100 kg gets a summer job painting houses. On his first project, he builds a platform using large pine board with a mass of mb = 60 kg The board has an overall length of L = 8.5 meters and set on two 1 meter tall saw horses so that l = 2.25 ...
*April 9, 2010 by Jacob*

**calculus (related rates)**

A particle moves in the plane along the curve y=xln(x). At what rate is the distance from the origin increasing at the moment its x-coordinate is 2 cm and its x-coordinate is increasing at a rate of 17 cm/sec?
*October 27, 2009 by drew*

**Physics**

A particle executes simple harmonic motion with an amplitude of 9.00 cm. At what positions does its speed equal two thirds of its maximum speed? I got: v2 +ω^2x^2 =ω^2A^2 vmax =ω A and v = ωA/2?
*January 4, 2010 by Zoe*

**science**

An element emits one alpha particle, one positron, and three beta particles. Its atomic number.... decreases by 2 decreases by 1 stays the same increases by 1 increases by 2
*August 6, 2012 by Jan*

**physics**

Two forces acting on a body in opposite directions,have the resultant velocities of 10newton. if they act at right angles to each other, the resultant is 50 newton.find the two forces.
*March 16, 2011 by Abhishek*

**physics**

A canal lock gate is 20m wide and 10m deep. calculate the thrust acting on it assume that the water in the canal is in level with the top of the gate. density of water is 1000kg/m^3
*September 7, 2013 by eman *

**How do i do this maths question??**

A sector of a circle with radius r cm contains an angle of θ radians between teh bounding radii. Given that the perimeter of the sector is 7cm, express θ in terms of r and show that the area is r/2(7-2r)cm square. Hence, find the maximum area of this sector as r ...
*June 19, 2009 by Danny*

**Physics**

One end of a uniform meter stick is placed against a vertical wall. The other end is held by a lightweight cord that makes an angle, theta, with the stick. The coefficient of static friction between the end of the meter stick and the wall is 0.390. A. what is the maximum value...
*April 3, 2007 by Karla*

**Physics**

When a 226/88 Ra nucleus decays by emitting an alpha particle, what is the atomic number of the resulting nucleus? What is the resulting atomic mass?
*April 17, 2008 by Chad*

**physics**

a particle moves along the sides ab,bc,cd of a square of sides 25m with a velocity of 25m/s find average velocity of th eparticle
*May 20, 2012 by choco*

**Physics**

A 9 kg lead brick falls from a height of 1.8 m. a) Find the momentum as it reaches the ground. b) What impulse is needed to bring the brick to rest? c) The brick falls onto a carpet 2.0 cm thick. Assuming the force stopping it is constant, find the average force the carpet ...
*November 7, 2007 by Jayd*

**Physics**

The Republic of Singapore Air Force uses the AIM-9 Sidewinder air-to-air missile which has a mass of 85.6kg. If the missile can accelerate from 300m/s to 700m/s in 6 seconds, what is the average force exerted on the missile?
*October 10, 2011 by Mah*

**physics**

this is in addition to my previous question (the particle undergoing an acceleration of 2.5 m/s^2 to the right and 3.2 m/s^2 up. what is its speed after 5.9s?) What is the direction with respect to the horizontal at this time? Answer between -180 degrees and 180 degrees. Anwer...
*June 23, 2011 by alexa*

**Physics**

How many times will the incident beam shown in Figure P25.3 (x = 1.90 m, y = 1.30 m) be reflected by each of the parallel mirrors? mirror on the right
*November 6, 2008 by Nancy*

**physics**

What is the weight in newtons of a 250 g package of cereal? need answer and work shown asap! plz and thank u!
*September 2, 2009 by Natalie*

**algebra**

(a) A graph of is shown in the figure, where y _ L(x). As the weight of the plane increases, what can be said about the length of the runway required?
*June 1, 2011 by logan*

**physics**

How many times will the incident beam shown in Figure P25.3 (x = 1.10 m, y = 1.80 m) be reflected by each of the parallel mirrors? mirror on the right
*September 4, 2011 by nish*

**math**

Does the median or mean best describe the typical size of the tour shown in the table above?explain.
*October 3, 2011 by marlene*

**Chemistry**

When the oxidation-reduction reaction shown here is balanced, how many electrons are transferred for each atom of copper that reacts? Ag^+ + Cu = Ag + Cu^2+
*June 26, 2012 by Danielle*

**math**

determine where grouping symbols should be placed so that the value of the expression shown below is 4. Justify your answer. 40-28/4+3*9
*September 18, 2012 by sarah*

**math**

determine where grouping symbols should be placed so that the value of the expression shown below is 4. Justify your answer. 40-28/4+3*9
*September 18, 2012 by sharon*

**Physics**

A picture hangs on the wall suspended by two strings, as shown in the figure, with θ = 59°. The tension in string 1 is 1.9 N.
*September 30, 2012 by Hey*

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