Friday

August 22, 2014

August 22, 2014

Number of results: 31,127

**Math Check please**

Will you please check my work for me. 1)The equation of a parabola is shown. y=1/14X^2. What are the coordinates of the focus? (0,3.5) <---- (0,-4) (0,7) (0,-3.5) 2)The equation x2 + (y + 3)2 = 36 models the boundary on a local map for which Darren can hear his friend Tom ...
*June 18, 2012 by Anonymous*

**chem**

Which pair begins wtih the larger particle? a)K+, K b)N,N -3 c)Mg+2,Ca+2 d)F-,F e)O-2,S-2
*March 2, 2008 by tony*

**science**

The movement of a water particle in a wave is called what?
*December 14, 2009 by Joe *

**SCIENCE**

What is the movement of a water particle in a wave called?
*December 14, 2009 by Joe *

**science**

what is the measure of particle packed close together
*December 16, 2009 by Anonymous*

**PHYSICS**

How can an election be particle and a wave at the same time?
*March 7, 2010 by Jordan*

**Physics**

Light is both a mechanical wave and a particle.
*June 26, 2011 by Thomas*

**Physics**

What happens to the particle speed as the temperature is increased?
*July 19, 2012 by Alfrieda*

**physics**

what is the terminal velocity of 5 µm particle with a density of 8.90 grams/cm^3
*October 26, 2013 by Jane*

**physics**

A backpack full of books weighing 43.0 N rests on a table in a physics laboratory classroom. A spring with a force constant of 150 N/m is attached to the backpack and pulled horizontally, as indicated in the figure. If the spring stretches by 2.30 cm, what is the coefficient ...
*March 22, 2011 by jen*

**algebra/math**

I have this figure of a square QRST with an equilateral triangle PQT sitting on top of the square. The figure looks like a little house... My question is if PQ equals 6 cm, then what is the area of the square? Do I need to find the area of the triangle to figure this out? Do I...
*March 11, 2009 by Mike 50*

**Physics**

The two blocks (m = 37 kg and M = 109 kg) in the figure below are not attached to each other. The coefficient of static friction between the blocks is µs = 0.55, but the surface beneath the larger block is frictionless. What is the minimum magnitude of the horizontal force ...
*October 28, 2009 by Jane*

**physics**

A 3.00 10^2 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 18.0° above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 8.00 m a) Find the work done by the pulling force...
*October 26, 2010 by Anonymous*

**Help, Physics**

A 3.00*10^2 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 18.0° above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 8.00 m. (a) Find the work done by the pulling force...
*October 28, 2010 by Anonymous*

**physics**

Block M = 7.50 kg is initially moving up the incline and is increasing speed with a = 3.82 m/s2 . The applied force F is horizontal. The coecients of friction between the block and incline are s = 0.443 and k = 0.312. The angle of the incline is 25.0 degrees. (a) What is ...
*August 6, 2011 by waqas*

**Resultant Force?**

a force F1 of 35 newtons pulls at an angle of 15 degrees notrth of due east. A force F2 of 75 newtons pulls at an angle of 55 degrees west of due south. Find the magntiude and direction of the resultant force. Please help me - I have no idea what to do or even where to start!
*April 23, 2012 by Tabby*

**algebra**

Show all steps Determine whether y varies directly with x if so find the constant of variation k and write the equation? X line is y line is 4. 6.4 7. 11.2 10. 16 13. 20.8
*March 11, 2014 by snow*

**Physics Angular Momentum**

A bullet with a mass m = 4.83 g and initial speed of 330 m/s passes through a wheel which is initially at rest as in the gure. The wheel is a solid disk with mass M = 2.29 kg and radius R = 18.6 cm The wheel rotates freely about an axis through its center and out of the plane ...
*July 11, 2011 by jhay*

**Physics**

Need help with part b... I got a to be k = 94.985 N/m I can't figure out how to go about doing part b.. A platform of mass 0.79 kg is supported on four springs (only two springs are shown in the picture, but there are four altogether). A chunk of modeling clay of mass 0.63 kg ...
*December 5, 2010 by Anonymous*

**physics**

A string is hanging from the rearview mirror of you car and a ball is at the end of this string. Suppose that your drive around a circular track at fixed speed. Which list below gives all the forces that act on the ball? A) tension and the force of gravity b) tension force of ...
*November 21, 2009 by jon*

**CHEM**

the nuclide 232 Th 90 is radioactive. when one of the atoms decays, a series of alpha and beta particle emission occurs, taking the atom through many transformations to end up as an atom of 208 Pb 82. How many alpha particles are emitted in converting 232 Th 90 into 208 Pb 82...
*March 4, 2008 by Gabe*

**physics**

A proton resistor spring system in a magnetic field going out of the page has a mass of proton 1.67*10^-27 kg, a spring constant k=500 N/m and the resistor has r=5Ω. The magnetic field strength is 0.8T. a) When released from rest, calculate the maximum displacement. b) ...
*March 30, 2010 by Thomas *

**physics fields and charges**

I'm stumped: 2 charges, Q1 and Q2, equal magnitude, but different signs (not assigned) lie on a line, x axis, a known distance apart. Segment pq lies centrally on the line, distance apart is known. An electron is released at p from rest, and passes q at a given time later. The...
*February 3, 2009 by charlie*

**physics**

An interstellar ship has a mass of 1.20 X10^6 kg and is initially at rest relative to a star system. a) what constant acceleration is needed to ring the ship up to a speed of .10c (where c is the speed of light, 3.0X10^8 m/s) relative to the star system in 3 days? b) what is ...
*November 21, 2006 by Bri*

**PHYSICS(HELP!!!!!)**

An airliner makes an emergency landing with its nose wheel locked in a position perpendicular to its normal rolling position. The forces acting to stop the airliner arise from friction due to the wheels and from the breaking effort of the engines in reverse thrust mode. The ...
*November 2, 2013 by Anonymous*

**physics**

Consider a rock that is thrown off a bridge of height 27 m at an angle θ = 24° with respect to the horizontal as shown in the figure above. If the initial speed the rock is thrown is 12 m/s, find the following quantities: (a) The time it takes the rock to reach its ...
*September 6, 2010 by frank*

**Physics**

A piece of luggage is being loaded onto an airplane by way of an inclined conveyor belt. The bag, which has a mass of 10.0 kg, travels 6.50 m up the conveyor belt at a constant speed without slipping. If the conveyor belt is inclined at a 60.0° angle, calculate the work done ...
*July 14, 2013 by Jenny*

**Physics**

A piece of luggage is being loaded onto an airplane by way of an inclined conveyor belt. The bag, which has a mass of 20.0 kg, travels 6.50 m up the conveyor belt at a constant speed without slipping. If the conveyor belt is inclined at a 40.0° angle, calculate the work done ...
*November 2, 2013 by Anonymous*

**Troy**

Can someone check my answers for the following problems. Simplify. Assume that no denominator equals 0. 1)(7x^2+3x-9)-(-x^2+8x-3) answer: 6x^2-5x-6 2) 5x^3(7x)^2 answer: 245x^5 3) (2x-3)^2 answer: 4x^2-9 4) Use synthetic division to find (2x^3-5x^2+7x-1)/(x-1) answer: 3 5)...
*April 11, 2008 by Alegebra2*

**HELP, PLEASE-Science**

Read the statment and then say which answer is right, why its right and why the others are wrong. I think the answer might be D but I don't know how to explain it or if it is even right. A biologist marked a cell which she knew was about to undergo meiosis. A short while later...
*December 19, 2007 by Kathryn*

**physics HELPP!!!!!!!**

A beam resting on two pivots has a length of L = 9.00 m and mass M =89.0 kg. The pivot under the left end exerts a normal force n1 on the beam, and the second pivot placed a distance 4.00 m from the left end exerts a normal force n2. A woman of mass m= 48.0 kg steps onto the ...
*November 14, 2012 by anon*

**Algebra II**

Identify the vertex, axis of symmetry, and direction of opening for y=2(x+3)^2-5 y = |2x+3|^2-5 h = 3 k = -5 vertex = (3,-5) axis of symmetry = x = 3 direction = up b/c a = 2 and 2>0
*March 2, 2008 by Jon*

**math**

find the axis of symmetry f(x)=-2x2-12x+8find the axis of symmetry f(x)=-2x2-12x+8
*May 3, 2011 by jacob*

**Basic Linear Algebra**

1. At what point does the graph of f(x)=3x-12 crosses the x-axis? 2.At what point does the graph of f(x)=5x+1 crosses the y-axis?
*February 5, 2014 by Shin*

**physics**

The ends of the two rods shown in the figure are separated by 2.97 mm at 24.3 °C. The left-hand rod is brass and 1.21 m long; the right-hand rod is steel and 1.21 m long. Assuming that the outside ends of both rods rest firmly against rigid supports, at what temperature will ...
*November 21, 2011 by maria*

**physics**

The ends of the two rods shown in the figure are separated by 2.97 mm at 24.3 °C. The left-hand rod is brass and 1.21 m long; the right-hand rod is steel and 1.21 m long. Assuming that the outside ends of both rods rest firmly against rigid supports, at what temperature will ...
*November 21, 2011 by maria*

**physics**

The ends of the two rods shown in the figure are separated by 2.97 mm at 24.3 °C. The left-hand rod is brass and 1.21 m long; the right-hand rod is steel and 1.21 m long. Assuming that the outside ends of both rods rest firmly against rigid supports, at what temperature will ...
*November 21, 2011 by maria*

**Physics**

Vector Aarrowbold points in the negative y direction and has a magnitude of 8 units. Vector Barrowbold has the same the magnitude and points in the positive x direction. Find the direction and magnitude of the following vectors. a) Aarrowbold + Barrowbold magnitude direction...
*October 12, 2012 by HELP*

**physics**

A 3.56-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.180 s, what is the average force ...
*October 14, 2011 by Anonymous*

**physics**

A 3.56-kg steel ball strikes a massive wall at 10.0 m/s at an angle of θ = 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle (see the figure below). If the ball is in contact with the wall for 0.180 s, what is the average force ...
*October 14, 2011 by Anonymous*

**Math**

What means Area? Length x width area is the amount of area inside a figure or a shape figure
*January 27, 2007 by Student*

**Science and Math Combined**

Can someone please help me understand how I figure out how much electricity I used when using a small appliance (lets say 300 watts. For the duration of 3 hours? Does anyone know the formula to figure this out?
*November 14, 2012 by Stacy*

**Algebra 1A**

Thanks Reiny,that is my only problem trying to figure out the equation. I just cannot figure out for some reason when getting the intersection, I tried several different ways yet my progress is still the same.
*July 3, 2013 by Kim*

**physics**

Consider a roller coaster as it travels near the bottom of its track as sketched in the figure below. At this point, the normal force on the roller coaster is three times its weight. If the speed of the roller coaster is 27 m/s, what is the radius of curvature of the track? I ...
*November 1, 2011 by sandy*

**Physics**

An elevator is lifted up by a thick steel cable. While the elevator is moving upwards with a decreasing velocity, a. the upward force on the elevator by the cable is greater than the downward force of the Earth b. the amount of upward force due to the cable is equal to the ...
*February 8, 2013 by Kirk*

**Physics please help**

Calculate the force required to pull a copper ball of radius 3.00 cm upward through a fluid at the constant speed 7.00 cm/s. Take the drag force to be proportional to the speed, with proportionality constant 0.950 kg/s. Ignore the buoyant force.
*November 17, 2008 by james*

**physics**

1. A man pulls a 300 N object across a horizontal surface using a 100 N force applied at a 35° angle. What is the normal force? If the object is pulled at constant speed, what is the coefficient of friction? normal force would be N=mg f+sin
*October 13, 2010 by physics LSU*

**physics**

A bucket of water has a weight of 40N.a man lifts the bucket by applying an upward force of 20N.at the same time a child pulls the bucket along the ground with a horizontal force of 10N...calculate the resultant force on the bucket
*January 19, 2014 by Anonymous*

**Physics science**

Dana and Gina are pushing on a box. Dana pushes with 250 N of force and Gina pushes with 100 N of force. A. What is the net force if tey both push the box in the same direction. B. what is the net force if they push in the opposite directions?
*September 27, 2012 by Ashley*

**MATH!**

What type of lines have a slope of zero? Write the equation of a line with the slope of -2 which contains the point (3,6) The x-axis has 0 slope. What about any other line with 0 slope? Use y-y1=m(x-x1) with m=-2, x1=3 and y1=6 What?? These were your questions and my responses...
*October 11, 2006 by Stephy*

**PHYSICIS ELENA PLEASE HELP**

A beam resting on two pivots has a length of L = 9.00 m and mass M =89.0 kg. The pivot under the left end exerts a normal force n1 on the beam, and the second pivot placed a distance 4.00 m from the left end exerts a normal force n2. A woman of mass m= 48.0 kg steps onto the ...
*November 14, 2012 by kl*

**Physics **

A person pushes on a 60-kg refrigerator with a horizontal force of -260 N; the minus sign indicates that the force points in the -x direction. The coefficient of static friction is 0.68. (a) If the refrigerator does not move, what are the magnitude and direction of the static ...
*February 2, 2011 by Tiffany*

**Physics (elena) help!!!**

An airliner makes an emergency landing with its nose wheel locked in a position perpendicular to its normal rolling position. The forces acting to stop the airliner arise from friction due to the wheels and from the breaking effort of the engines in reverse thrust mode. The ...
*November 2, 2013 by Anonymous*

**Physics**

A wood block with a mass of 100 grams is held at the top of an inclined board (point A in Figure 2). If we assume force of friction (Ff) is 0.35N and constant as the block slides down the ramp, what will the velocity be at point B after the block is released and slides down ...
*January 21, 2011 by Anonymous*

**Physics**

A particular Ferris wheel (a rigid wheel rotating in a vertical plane about a horizontal axis) at a local carnival has a radius of 20.0 m and it completes 1 revolution in 9.84 seconds. (a) What is the speed (m/s) of a point on the edge of the wheel? Using the coordinate system...
*August 6, 2011 by waqas*

**Physic**

A horizontal Electric Field is applied to the original spring-mass system as shown below: What is the tangent of the angle θ (tan(θ)) between the spring and the vertical in terms of E, ke (type "ke"), q, m, and g as needed? Indicate multiplication with a "*" sign and...
*November 11, 2013 by solid chem*

**Physics**

A ball acquires a horizontal speed of 12m/sec when a force is applied for a distance of .50m. If the ball has a mass of 1.0kg what is the force applied? ANSWER: 144N....I'm not sure what formulas I'd apply. It takes a force of 109N to life a stone straight up. This force gives...
*October 12, 2012 by Brad*

**Science**

Grasshoppers generally have the colour as their background. What would be the problem with using the mark/release/recapture method to estimate the size of a population of grasshoppers if you marked them with bright red mark.
*September 28, 2009 by Alyssa*

**Physics 11th grade**

A) What is the intensity of sound at 148 dB? Units: W/m^2. I found this to be 630.9573445 using Io*10^B/10 in which B= 148 dB. B)Compare it to that of a whisper at 20 dB. Using the same formula i find this to be 1e-8 but it is marked as wrong. Please help with B!
*May 21, 2010 by Luricela*

**science**

A Graph Shows Distance On The Vertical Axis And Time On The Horitzonal Axis. If The Speed Is Steadily Increasing. What Will The Line Representing Speed Look Like On The Graph? (I believe the answer is A) A. It will be a straight diagonal line b. It will be a straight line that...
*March 4, 2009 by mickey*

**math**

You are hosting a cookout for 24 people and are supplying the main dishes and several sides. You must take a trip to the grocery store in order to purchase all of the items you need. You know that hotdogs are $1.50 per package and there are 8 hotdogs in each package. You also ...
*August 25, 2013 by crystal*

**Science**

A 2 N and 6 N force pull on an object to the right and a 4 N force pulls to the left a 0.5 kg object. What is the net force on the object?
*March 28, 2012 by Mary *

**science**

What is the net force on a box that is being pushed to the left with a force of 50 N while it is also being pushed to the right with a force of 60 N
*December 9, 2011 by Tonya*

**Physics E&M**

A Geiger counter detects radiation such as alpha particles by using the fact that the radiation ionizes the air along its path. A thin wire lies on the axis of a hollow metal cylinder and is insulated from it. View Figure A large potential difference is established between the...
*February 19, 2008 by Spencer*

**Science**

1. In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True <---- False 2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s <...
*March 17, 2014 by Chloé*

**Physics**

A person pushes on a 56-kg refrigerator with a horizontal force of -251 N; the minus sign indicates that the force points in the −x direction. The coefficient of static friction is 0.7. (a) If the refrigerator does not move, what are the magnitude and direction of the ...
*October 2, 2013 by Heather*

**Physics**

An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 4.5× 104 kg, and the force causes its speed to change from 7000 to 5000m/s. (a) What is the work done by the force? (b) If the ...
*April 4, 2014 by Elle*

**physics -jumper**

The feet of a standing person of mass m exert a force equal to mg on the floor, and the floor exerts an equal and opposite force upwards on the feet, which we call the normal force. During the extension phase of a vertical jump, the feet exert a force on the floor that is ...
*June 4, 2010 by lau*

**Chemistry**

Arsenic acid has the formula H^3AsO^4. It is a triprotic acid. Abottle is marked 0.422 N arsenic acid. What is the Molarity of this solution?
*April 27, 2013 by naomi*

**science**

In the following diagram, the greem ball changes direction after colliding with the red ball because the red ball has more momentum. True <---- False 2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s <---- ...
*March 10, 2014 by thenameisjordan*

**calculus**

A cooling tower for a nuclear reactor is to be constructed in the shape of a hyperboloid of one sheet. The diameter at the base is 260 m and the minimum diameter, 500 m above the base, is 200 m. Find an equation for the tower. (Assume the center is at the origin with axis the ...
*July 8, 2013 by Ana*

**calculus**

A cooling tower for a nuclear reactor is to be constructed in the shape of a hyperboloid of one sheet. The diameter at the base is 260 m and the minimum diameter, 500 m above the base, is 200 m. Find an equation for the tower. (Assume the center is at the origin with axis the ...
*July 8, 2013 by Ana*

**PHYSICS**

1. Vecor A is 3 units in length and points along the positive x-axis. Vector B is 4 units in length and points along a direction 150 degrees from the positive x-axis. What is the direction of the resultant relative to the positive x-axis? a. 80 degrees b. 10 degrees c. 90 ...
*December 14, 2006 by anonymous*

**math 117**

Can some help me with this appendix please. Thank you Pay attention to the units of measure. You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object ...
*July 16, 2010 by c.g.*

**physics**

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 18m/s. The cliff is 50m above a flat horizontal beach, as shown in Figure 3.20. How long after being released does the stone strike the beach below the cliff? With what speed ...
*September 26, 2007 by Anonymous*

**ENGLISH!**

In what part of speech is "concert" being used as? "Our share of the responsibility for what we do individually or in concert with others varies with social and political structures..."
*January 28, 2010 by Happy Face*

**MATH**

The volume V of a gas varies inversely as pressure P is exerted. If V = 4 liters when P = 3 atmospheres, find V when P = 7 atmospheres. Note: Round your answer to the nearest hundredth
*October 12, 2010 by NICKY*

**math**

The volume V of a gas varies inversely as pressure P is exerted. If V = 4 liters when P = 3.5 atmospheres, find V when P = 2.5 atmospheres. Note: Round your answer to the nearest thousandth.
*October 8, 2012 by Anonymous*

** science**

Although the salinity of ocean water varies from place to place, the relative amounts of the different salts do not vary significantly. Briefly explain why this is so?
*April 17, 2013 by T-perry*

**physics**

A 0.0150-m wire oriented horizontally between the poles of an electromagnet carries a direct current of 9.5 A. The angle between the direction of the current and that of the magnetic field is 25.0° as shown. If the magnetic field strength is 0.845 T, what is the magnitude and...
*May 6, 2010 by lakhvir*

**Physics**Scientist**

Please help me with this!! I really can't find it. 1) This scientist used his device by dropped a spool of wire through a magnetic field. 2)This scientist used a torsional balance to show that the magnetic repulsion between magnetic poles varied by the square of the distance. ...
*May 30, 2013 by Isis*

**writing**

whats the most fun thing about acting?
*February 3, 2008 by tanny*

**english**

how long does it take to remember everything your susposed to do when your acting?
*February 3, 2008 by tanny*

**Physics**

An object traveling through the air has what forces acting on it.
*November 15, 2008 by fahad*

**PHYSICS**

aN OJECT TRAVELING THROUGH THE AIR HAS WHAT FORCES ACTING ON IT?
*November 15, 2008 by fahad*

**math**

how did acting itout yhelp you solve money problems?
*February 4, 2010 by amy*

**physics**

What forces are acting on a puck that is on an air hockey table?
*March 3, 2011 by Ale*

**Algebra**

I've been looking for help on setting up this part of my homework so that I could finish it. If anyone can help, please do. Part 1: Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on Earth also varies ...
*February 6, 2011 by Desparate for Help*

**soil**

soil temperature as its varies with dept
*July 22, 2011 by otiotio taofik*

**Physics**

What value of F can pull the 5.00 kg box at constant velocity up the incline plane if uk=0.25. uk is coefficient friction The force F must equal the component of weight down the plane added to the frictional force. The frictional force is uk*mg*cosTheta. We will be happy to ...
*September 12, 2006 by fluffy*

**science question..please answer quick!**

If a bicycle rider and her bicycle have a mass of 50kg, how much force is needed to provide an accerlation of 0.7m/s (squared) Force on the tire /pavement: F= m*a I don't understand.. ;( Multiply mass times acceleration to get the force.
*December 19, 2006 by brandi*

**science**

In the system shown in the figure , block A has mass m_A = 2.08 kg, block B has mass m_B = 0.370 kg, and the rope connecting them has a nonzero mass 0.203 kg. The rope has a total length 1.03 m and the pulley has a very small radius. Let d be the length of rope that hangs ...
*January 18, 2011 by Will*

**Cal 1**

A trough is 10 ft long and 2.6 ft across the top. Its ends are isosceles triangles with an altitude of 2.1 ft and vertex down. Water is being pumped into the trough at a rate of 2.4 ft3/min. How fast is the water level rising when the water is 1.39 ft deep? Answer in units of ...
*November 3, 2011 by ninzyy*

**physics**

Three different forces produce the same displacement: the vector Delta(r) starts at the left edge of your computer monitor and the tip points to the right edge of your monitor in a horizontal orientation. The first force has a magnitude of 10 N and it is pointing straight up, ...
*April 4, 2013 by Jamie*

**Physics**

A penny rests on top of a bowling ball. You give the bowling ball a slight bump and the penny slides off the frictionless, spherical surface as shown below. At what angle θ does the penny leave the surface of the bowling ball? (Hint: When the penny leaves the surface, the...
*March 8, 2014 by George*

**math**

jerome morgan and bly compete in a 10 kilometer race with 5 other athletes. what are the odds that they finish in the top 3 places? i got 3 to 5 but my teacher marked it wrong and wanted us to find out why it was wrong on our own. help would be nice!
*April 9, 2009 by tina*

**Physics**

What are the strength and direction of the electric field at the position indicated by the dot in the diagram below, in which d = 4.9 cm, q = 11 nC, the positive x-axis points to the right, and the positive y-axis points up? Give your answer in each of the following forms. The...
*February 28, 2012 by help!*

**statistics**

What does the area corresponding to the critical value zcrt mean? There is a graph that has a normal bell shape curve that has a vertical arrow that intersects the x axis far from the y axis. then everything to the left of the the vertical arrow is colored in blue. The ...
*March 26, 2008 by stats*

**PHYSICS**

Three small spheres are placed at fixed points along the x-axis, whose positive direction points towards the right. Sphere A is at x = 23.0 cm, with a charge of -10.00 ìC. Sphere B is at x = 55.0 cm, with a charge of 2.00 ìC. Sphere C is at x = 57.0 cm, with a charge of -9.00...
*May 3, 2010 by Jay*

**Chemistry**

I was supposed to figure out whether the following equations produced precipitates or not. Here are my answers, but I know that they are wrong. So I still can't figure out where I'm messing up...? Please help! HgCl2 (aq) + K2CrO4 (aq) = Yes Ba(OH)2 (aq) + NaClO3 (aq) = No ZnI2...
*January 13, 2008 by Cierra*

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