Monday

October 20, 2014

October 20, 2014

Number of results: 45,388

**physics**

Two bicyclists, starting at the same place, are riding toward the same campground by two different routes. One cyclist rides 1500 m due east and then turns due north and travels another 1430 m before reaching the campground. The second cyclist starts out by heading due north ...
*September 16, 2010 by john*

**PHYSICS-HELP!!**

Two bicyclists, starting at the same place, are riding toward the same campground by two different routes. One cyclist rides 1500 m due east and then turns due north and travels another 1430 m before reaching the campground. The second cyclist starts out by heading due north ...
*September 16, 2010 by JENNA*

**chemistry**

a fire extignuisher produces carbon dioxide by the reaction between sodium hydrocarbonate and sulfuric acid. if a fire extinguisher is desgined to hold 600.0g of sodium hydrocarbonate calculate : the mass of sulfuric acid required to react with sodium hydrocarbonate AND ...
*April 17, 2010 by sarah *

**physics**

we can say that the force of gravity is equal to mass times acceleration were the acceleration is equal to gravity sense gravity is an acceleration because of newtons second law force = mass times acceleration hence Fg = mass times acceleration Fg = mass times gravity Fg = mg ...
*September 12, 2009 by physics*

**Trigonometry**

1. Ben is pulling on a tobaggan rope with a force of 250 newtons. The rope makes a 36 angle with the ground. What force is actually working to move the tobaggan to the right? 2. If a boat going 6 mi/hr in still water suddenly encounters a crosscurrent of 4 mi/hr, at what angle...
*September 21, 2006 by Lisa*

**chemistry**

You are tasked with preparing a 500mL nutrient solution containing 5mg/L of phosphorous (P), 3mg/L nitrate (NO3 -) and 100 mg/L chloride (Cl-). To make this solution, you have powdered sodium chloride, a 100 mg/L solution of phosphorus, a 1000 mg/L of sodium nitrate (NaNO3) ...
*January 13, 2014 by Bruce*

**physic**

Before practicing his routine on the rings, a 67 kg gymnast hangs motionless, with one hand grasping each ring and his feet touching the grounnd. Both arms make an angle of 24 degrees with the vertical.(a) If the force exerted by the rings on each arm has a magnitude of 290 N...
*November 6, 2011 by taylor*

**physics**

A 34.2 -kg block rests on the oor. (a) What force (N) does the oor exert on the block? (b) If a rope is tied to the block and run vertically over a pulley, and the other end is attached to a free-hanging 5.6 kg weight, what force (N) does the oor now exert on the block? (c) If...
*August 6, 2011 by waqas*

**physics**

i apply an 800 N force to the crate a. how long would it take the crate to travel 20m across the warehouse floor(in the direction that i am pushing it)? b. what is the magnitude and direction of the force of friction acting on the crate?
*November 5, 2010 by Jane*

**physics**

i apply an 800 N force to the crate a. how long would it take the crate to travel 20m across the warehouse floor(in the direction that i am pushing it)? b. what is the magnitude and direction of the force of friction acting on the crate?
*November 7, 2010 by Anonymous*

**physics**

A wooden box weighing 281 N is pushed across the floor by a workman who exerts a horizontal force of 166 N. If the force of friction between the box and the floor is 21 N, what is the acceleration (in meters/second^2) of the box?
*March 8, 2011 by nm*

**physics**

wooden box weighing 271 N is pushed across the floor by a workman who exerts a horizontal force of 144 N. If the force of friction between the box and the floor is 28 N, what is the acceleration (in meters/second^2) of the box?
*March 1, 2012 by Anonymous*

**physics**

A wooden box weighing 271 N is pushed across the floor by a workman who exerts a horizontal force of 144 N. If the force of friction between the box and the floor is 28 N, what is the acceleration (in meters/second^2) of the box?
*March 7, 2012 by phil*

**physics**

A box of mass 18.8 kg is pulled to the right with a horizontal force of 9 N. If the box moves to the right with a constant velocity of 1.06 m/s, what is the frictional force acting on the box?
*November 16, 2009 by Jimmy*

**Physics**

A forward force of 8X102 Newtons is applied to a 1.9x103 kg car. If the friction force on the car is 6x102 Newtons what is the acceleration of the car in units of m/s2?
*January 3, 2010 by Aly*

**science**

The earth exerts a force of 2200N on an orbiting communications satellite that is 35mi above the earth..What is the magnitude of the force the satellite will exert on the earth??
*March 11, 2010 by Elver Gon*

**Physics**

A 20 N force acts on a 10 kg object parallel to the object's displacement. If the force acts for 32 m, what is the final kinetic energy, in J, of the object assuming it starts from rest?
*July 2, 2012 by Megan*

**physics**

When a mover pushes with a constant sideways force of 20 N on a 15 kg box, the box moves along the floor at a constant speeed of 2m/s, What is the net force on the box?
*July 23, 2012 by Anonymous*

**Physics **

A charge of 5 nC is located at P(2,π/2,-3) and another charge of -10nC is situated at Q(5,π,0). Calculate the force exerted by one charge on the other. What is the nature of this force?
*February 24, 2013 by Miguel*

**Physics**

An object with a mass of 5 kg moves at a constant velocity when it is pulled by a horizontal force of 5 N on a level surface. What is the acceleration of the object if the object is pulled with a force of 25 N?
*March 25, 2014 by Dienta*

**chemistry**

3 part question If an object is completely submerged in a liquid, what volume of liquid does the object displace? List the special waste disposal instruments that must be followed. List the special safety precautions that must be taken.
*February 4, 2014 by CeeCee*

**Physics - Tension**

Two blocks are connected by a string and are pulled vertically upward by a force of 165 N applied to the upper block. (here is a rough diagram) ^ (F=165 N) I [block] ( <- 2.00 kg) I [block] ( <- 1.00 kg (a) Find the tension T in the string connecting the blocks. (b) If ...
*February 19, 2013 by Wes*

**Dynamics**

True or false (Each question carries 1 marks) (i) A rigid body is an idealization of the behavior of a body. (ii) A Geo-stationary satellite follows a circular orbit at a unique and has a time period of 24h. (iii) Constancy of areal velocity for a central force motion of a ...
*July 31, 2012 by Rajan*

**physic**

The drawing (not to scale) shows one alignment of the sun, earth, and moon. The gravitational force SM that the sun exerts on the moon is perpendicular to the force EM that the earth exerts on the moon. The masses are: mass of sun = 1.99 1030 kg, mass of earth = 5.98 1024 kg, ...
*November 21, 2010 by hy*

**physics**

The drawing (not to scale) shows one alignment of the sun, earth, and moon. The gravitational force SM that the sun exerts on the moon is perpendicular to the force EM that the earth exerts on the moon. The masses are: mass of sun = 1.99 1030 kg, mass of earth = 5.98 1024 kg, ...
*February 7, 2013 by Dee*

**tough question**

Why in the Emancipation Proclamation did Lincoln make exceptions to certain areas (I am not talking about the Border States that remained loyal and did not cede, but there were other areas also, like New Orleans, York, St.Bernard, St.Charles, and some others.) See....why would...
*February 1, 2007 by jessca*

**HIPAA repsot**

ok this what I have now please let me know what you think thanks so much Congress implemented the Health Insurance Portability and Accountability Act (HIPAA), which enables individuals to have more control over their own health information. This helped to establish clear lines...
*August 10, 2008 by kaleigh*

**7th grade science weather Ms.Sue help please**

1. Which of the following facts might be related to polar climates? (1 point) Solar energy hits these regions at a low angle. Year-round temperatures are always hot. These regions lie between latitudes 23° north and 23° south. Temperatures in these zones are moderate. 2. If ...
*October 10, 2012 by Delilah*

**Math**

johnny is directly in front of dougie, who is playing goalie as shown. johnny is 2.8m from both goal posts. he is also three times as far from dougie as dougie is from either post. he is also three times as far from dougie as dougie is from either post. determine the width of ...
*December 5, 2010 by Sarah*

**physics**

A 1.6 kg particle moving along the x-axis experiences the force shown in the figure. The particle's velocity is 4.2 m/s at x = 0 m. The figure or graph has F (N) along the y axis and velocity along the x axis. A diagonal line drops from positive 10 force to -10 force from 0 cm...
*December 2, 2009 by Hope*

**HIPAA repsot**

I have to write a research paper This is what I have Thanks for you help HIPAA Privacy Standards The Congress implemented the Health Insurance Portability and Accountability Act (HIPAA), which enables individuals to have more control over their own health information. This ...
*August 8, 2008 by kaleigh*

**math**

Two lookout stations, which are 25 miles apart along the coast on a north-south line, spot an approaching yacht. One lookout station measures the direction to the yacht at N 33degrees E, and the other station measures the direction of the yacht at S 62degress E. How far is the...
*December 11, 2012 by kai*

**computing**

if you can answer these question and give the calculation that would be a great help thank you 1. Calculate the amount of storage required for a black and white bit-mapped graphic which has a resolution of 2000 x 1400 dpi. 2. calculate the amount of storage required for a 600 ...
*September 6, 2010 by LiiNa*

**Physics**

(a) How much heat in kcal must be provided for a 0.853 kg block of lead to raise the temperature of 0.015 kg block of ice from -5ºC to 0ºC? (b) How much heat in kcal must be provided for a 0.853 kg block of lead to melt a 0.015 kg block of ice from at 0ºC? (c) How much heat in...
*February 5, 2012 by Hannah*

**Law**

Please choose the correct answer 21. All of the following statements are true, EXCEPT: a. Generally, courts will refuse to enforce contracts that involve illegal activities. b. Generally, courts will refuse to enforce contracts that are determined to be contrary to public ...
*June 19, 2009 by Trying*

**physics**

find the force and the force direction of a 2x10^-6 C charge that is 3m west of a +5x10^-6 C charge (0.01 N west)
*November 27, 2009 by sammeh*

**physics**

It Takes 2 N of force to get a 15 kg object to move horizontally on a surface. What is the normal force of the surface on the object?
*November 8, 2011 by Kai*

**science**

If a hook exerts a force of .001N on the ceiling, how much force does the ceiling exert on the hook?
*December 5, 2011 by Anonymous*

**Physics**

What is the vector sum of a 65 N force acting due east and a 32 N force acting due west?
*December 13, 2011 by Anonymous*

**Physics**

What is the vector sum of a 65 N force acting due east and a 32 N force acting due west?
*December 13, 2011 by Anonymous*

**physics**

A 5 kg magnet exerts a constant force of 3 N on a 0.25 kg magnet. What force will the smaller magnet exert on the larger magnet?
*March 4, 2012 by Anonymous*

**physics**

A 5 kg magnet exerts a constant force of 3 N on a 0.25 kg magnet. What force will the smaller magnet exert on the larger magnet?
*March 4, 2012 by Anonymous*

**physics**

A 5 kg magnet exerts a constant force of 3 N on a 0.25 kg magnet. What force will the smaller magnet exert on the larger magnet?
*March 4, 2012 by Anonymous*

**physical sicence**

If a force gives a 2-kg object an acceleration of 1.6 m/s2, what acceleration does this same force give to an 8-kg object?
*October 12, 2012 by maria*

**physics**

If two charges are a distance R apart from eachother and their force is F, what will the force be if they are moved apart to a distance of 2R?
*January 30, 2013 by mike*

**Chemistry**

Hi Can anyone help me determine the valency of selenium in hydrogen selenide... how do you work this out ??? Thank you .. Freddo .. H2Se is the formula for hydrogen selenide. The valence of H is +1, there are two of them for a total charge of +2. For the compound to be zero, ...
*January 10, 2007 by Freddo*

**Physics **

A place kicker must kick a football from a point 25.5 m from the goal, and must clear a crossbar that is 3 m off the ground. When kicked the ball leaves the ground with a speed of 21.9 m/s at an angle of 54o to the horizontal. By how much does the ball clear the crossbar?
*February 5, 2012 by Roger*

**commercial**

For an assignment, I have to make a commercial on: 1. can be made up 2. must make the consumer want to buy it but is not being sold 3. must have a song jingle 4.nonusual promoted as usual I want to use wood but it is heavy, so I need help on an object to use.
*January 7, 2013 by Celest*

**Physics grade 12**

Find the force of tension in the chain. Determine the force of compression in the support bar. Be sure to include a free body diagram as part of your solution. Now the only information given is a mass=20.4 kg and the angle 22 degrees. If anyone could help me with this question...
*March 14, 2012 by anonymous*

**Physics**

A satellite orbits the earth at a distance of 10,000 miles from the earth's center. At this distance the force of gravity on the satellite is 90lbs. What would the force on the satellite be if the distance were 5000 miles instead? At what distance from the earth's center would...
*May 17, 2010 by Anonymous*

**Physics**

A colony of troglodytes has been in a lengthy feud with its neighbors on the adjacent cliff. Colony A finally develops an important military breakthrough: it rolls bombs off its cliff at known rates of speed, thus gaining pinpoint accuracy in its attacks. The acceleration of ...
*December 3, 2010 by Anna*

**Stats**

If there are only two possible outcomes to an experiment then... A.) the two corresponding probabilities must each be.50. B.) the two corresponding probabilities could be any numbers between 0 and 1, but must add up to 1. C.) the two corresponding probabilities could each be ...
*November 2, 2011 by Mandy*

**physics**

a 5.0kg concrete block accelerates down a 34 degree slope at 4.2 m/s^2. Find the coefficient of friction between the block and the slope. The component of weight down the slope is mg*SinTheta. The component of weight perpendicular to the slope is mg CosTheta.THe friction force...
*September 13, 2006 by mclanee*

**physics**

Initially a small car and a truck are at rest then the car starts pushing a dead battery truck and they both accelerate. Which of the following statement is true? a)The car exerts a larger force on the truck than the truck exerts on the car. b) The car exerts the same amount ...
*November 4, 2011 by Cindy*

**physics**

A box of weight 2N accelerates down a rough plane that is inclined at an angle 30 degrees above the horizontal. The normal force acting on the box has a magnitude 1.7 N, the coefficient of kinetic friction between the box and the plane is O.30, and displacement of the box is 1...
*November 30, 2009 by Ashley*

**Statistics**

I'm confused about significance tests. I've tried to look up what it means for the p to be less than the alpha but none of the explanations made sense. I understand that the alpha is the probability of wrongly rejecting the null hypothesis but I'm not sure about the t and p ...
*December 8, 2009 by Sam*

**Physics**

The builders of the Great Pyramids of Egypt are thought to have used ramps to move the large 20,000 kg (22 ton) stone blocks into place at the construction site. To reduce friction, the Egyptians are assumed to have used rollers between the ramp and each block, enabling the ...
*June 23, 2013 by Anonymous*

**Physics**

A worker drags a crate across a factory floor by pulling on a rope tied to the crate. The worker exerts a force of 450 N on the rope, which is inclined at 38° to the horizontal, and the floor exerts a horizontal force of 125 N that opposes the motion. Calculate the ...
*February 3, 2007 by COFFEE*

**help...urgent..calculus**

Sony Ent. is marketing a new smartphone. It determines that in order to sell x smartphones, the price per product must be p=280-0.4x. It also determine that the total cost of producing x smartphones is given by c(x)=5000+0.6x^2 . a. Find the total revenue, R(x). b. Find the ...
*December 15, 2012 by fafa*

**Operational Management**

Taylor Inc. manufactures widgets. There is a particular assembly line for Widget X. This assembly line includes the assembly of various raw materials, subassemblies, and packing of the finished widget. Currently, approximately 27% of the total labor time is utilized in walking...
*May 29, 2010 by Angela*

**English**

Writing sentence and Paragraphs. Does the below look correct? Paragraphs 2 I am very excited about making medical billing and coding as my new field of my career. Since I use to work for Mary Brecking Ridge Hospital for 6 years. I learned a lot so now I have decided to get ...
*January 13, 2012 by Mama*

**Physics Hear**

1) Peter is heating water on the stove to boil eggs for a picnic. How much heat is required to raise the temperature of his 10.0-kg vat of water from 20.0℃ to 100.0℃? Formula>> Q=mTcp 2)Under the spreading chestnut tree of the village blacksmith dunks red-hot...
*April 11, 2013 by Isis*

**Physics**

In Larry Niven’s science ﬁction novel Ringworld, a ring of material of radius 1.54 × 1011 m rotates about a star with a rotational speed of 1.5 × 106 m/s. The inhabitants of this ring world experience a normal contact force ~n. Acting alone, this normal force would ...
*July 9, 2013 by Lynn*

**physics**

A placemaker must kick a football from a point 36 m (about 39yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a velocity of 20.0 m/s at an angle 53 degrees to the horizontal. By how much does the ball ...
*September 30, 2008 by mb*

**physics**

A placemaker must kick a football from a point 36 m (about 39yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a velocity of 20.0 m/s at an angle 53 degrees to the horizontal. By how much does the ball ...
*September 30, 2008 by mb*

**Physics**

A boat must cross a 260-m-wide river and arrive at a point 110 upstream from where it starts. To do so, the pilot must head the boat at a 45 degree upstream angle. THe current has speed 2.3 m/s. a) What is the speed of the boat in still water? b) How much time does the journey...
*February 5, 2013 by Chris*

**Physics **

1. If a 30kg object experiences a normal force of 210N when traveling down a ramp, what is the angle of incline? Also, calculate the force of friction and the coefficient of friction. Answers: μ(mu)=0.98 Θ=44.5 degrees But please show work and all equations/variables...
*June 22, 2011 by Tina*

**physics**

Three charges are fixed in the x−y plane as follows: 1.5nC at the origin (0, 0); 2.6nC at (0.65m , 0); –1.8nC nC at (0, 1.50m ). Find the force acting on the charge at the origin. Express your answers using two significant figures. Enter the x and y components of the ...
*January 27, 2014 by James*

**Physics**

An 100.0-N crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 29.0° to the ground. (b) The interaction partner of this normal force has what magnitude and direction? Magnitude 87.46 N Direction 61° below the ...
*May 21, 2012 by Amy*

**Physics**

A person must move two heavy packages over a surface level so they place a 20kg package over a 30kg package and decide to move them together. The coefficient of kinetic friction between the lower package and the ground is 0.3. The person exerts a force of 400N at an angle of ...
*April 2, 2008 by Alex*

**Physics**

A person must move two heavy packages over a surface level so they place a 20kg package over a 30kg package and decide to move them together. The coefficient of kinetic friction between the lower package and the ground is 0.3. The person exerts a force of 400N at an angle of ...
*April 2, 2008 by Alex*

**Physics**

You are pulling a suitcase thru the airport at a constant speed. The handle of the suitcase makes an angle of 45 degrees with respect to the horizontal direction. If you pull with a force of 7.5 N parallel to the handle, what is the force of friction acting on the suitcase?
*September 14, 2010 by Ashli*

**Physics**

You are pulling a suitcase through the airport at a constant speed. the handle of the suitcase makes an angle of 45 degrees with respect to the horizontal direction. if you pull with a force of 7.5N parallel to the handle, what is the force of friction acting on the suitcase?
*September 15, 2010 by Jorge*

**Physics **

Can someone please help me? The brakes of a truck cause it to slow down by applying a retarding force of 2.60 103 N to the truck over a distance of 930 m. What is the magnitude of the work done by this force on the truck? Is the work positive or negative? Explain Why?
*March 15, 2011 by Phil*

**physics**

You push a 8.00 kg suitcase across a smooth horizontal floor applying a force directed 31.5 degrees below the horizontal. Someone measures the acceleration of the suitcase to be 1.73 m/s2. Assuming g = 10.0 m/s2, what is the normal force the ground exerts on the suitcase?
*September 25, 2012 by layla*

**Physics**

8. When a person stands on a rotating merry go round, the frictional force exerted on the person by the merry go round is (A) greater in magnitude than the frictional force exerted on the person by the merry go round (B) opposite in direction to the frictional force exerted on...
*February 10, 2008 by Anonymous*

**Physics**

Two boxes of mass 7.40 and 7.00 kg are in contact and are accelerated across a horizontal surface by an force of 51.49 N applied parallel to the surface and pushing on the lighter box. The magnitude of the frictional force between the surface and the lighter mass is 9.26 N and...
*March 24, 2014 by Anonymous*

**Physics**

Two tugboats are pulling a freighter. Find the net force and direction of the acceleration for the following cases. Assume that each tugboat pulls with a force of 1.2 x 10^5 N. Assume no resistive force at this time. a) Tugboat 1 pulls in a direction given by [N 60 degrees E] ...
*April 3, 2011 by Emily*

**Genetics**

A viral DNA is analyzed and found to have the following base composition, in mole percent: A = 32, G = 16, T = 40, C = 12. What can you immediately conclude about this DNA? a stretch of double stranded DNA contains 1000 base pairs and its base composition is 58 % (G + C). How ...
*September 17, 2009 by Anonymous*

**Physics Heat**

1) Peter is heating water on the stove to boil eggs for a picnic. How much heat is required to raise the temperature of his 10.0-kg vat of water from 20.0℃ to 100.0℃? Formula>> Q=mTcp 2)Under the spreading chestnut tree of the village blacksmith dunks red-hot...
*April 10, 2013 by Isis*

**Alebra**

Kathy works at an optical store selling eyeglasses. Each week she earns $180 plus a 2% commission of her total sales for the week. Next week she wants to earn at least $350. 1. Write an inequality that represents the dollar amount of eyeglasses kathy must sell to earn at least...
*January 3, 2012 by Megan*

**physics**

During a track event two runners, Mary, and Alice, round the last turn and head into the final stretch with Mary a distance d = 4.0 m in front of Alice. They are both running with the same speed of v0= 7.0 m/s. When the finish line is a distance L= 45.0 m away from Alice, ...
*September 11, 2013 by tini*

**physics**

An 855 kg dragster accelerates from rest to 120 km/h in 0.90 seconds. What is the average force exerted on the car? I used the regular f=ma which is f=855*(120-0/.9) which equalled 114000 but that answer is wrong. I don't know another formula am i supposed to add in the ...
*December 5, 2007 by katlin*

**physics**

(II) A grocery art with mass of 18 kg is pushed at constant speed along an aisle by a force F = 12 N. The applied force acts at a 20-degree angle to the horizontal. Find the work done by each of the forces on the cart if the aisle is 15 m long. Please help me solve step by step.
*October 7, 2009 by pauleen*

**physics**

a bullet with a mass of 5 g and a speed of 600 m/s penetrates a tree to a depth of 4 cm. Assume that a constant frictional force stops the bullet. Calculate the magnitude of this frictional force. I used KE = 1/2 mv^2 = 900 J then F (friction ) = W/d = 22500 N BUT I don't know...
*February 20, 2011 by Nilan*

**Physics**

If a aircraft flie at 1000m/s east it accumulates a 50C of charge as it passes a cloud. How would I calculate magnitude of magnetic force, direction of magnetic force on plane and do the pilots have to make corrections to make up for the difference? Thanks in advance for any help
*April 23, 2011 by Russ*

**physics**

A horizontal force of 142 N is used to push a 47.0 kg packing crate a distance of 6.00 m on a rough horizontal surface. The acceleration of gravity is 9.81 m/s2 . If the crate moves with constant velocity, calculate a) the work done by the force. Answer in units of J b) the ...
*October 12, 2011 by #!*

**physics**

A horizontal force of 142 N is used to push a 47.0 kg packing crate a distance of 6.00 m on a rough horizontal surface. The acceleration of gravity is 9.81 m/s2 . If the crate moves with constant velocity, calculate a) the work done by the force. Answer in units of J b) the ...
*October 12, 2011 by #!*

**Physics**

Two horizontal forces F1 and F2 act on a 1.7 kg disk that slides over frictionless ice, on which an xy coordinate system is laid out. Force F1 is in the negative direction of the x axis and has a magnitude of 3.0 N. Force F2 has a magnitude of 9.0 N. What is the angle between ...
*March 6, 2012 by Leo*

**physics**

A hockey puck with mass 0.160kg is at rest on the horizontal, frictionless surface of a rink. A player applies a force of 0.310N to the puck, parallel to the surface of the ice, and continues to apply this force for 1.60s. What is the (a)position and (b)speed at time end?
*November 14, 2012 by Force and direction*

**physics**

A skydiver leaps from a hovering helicopter at 2000 feet. Sketch a small graph showing each of the following from the time she leaves the helicopter until she reaches terminal speed: (a) Force of air resistance. (b) Net force (c) acceleration (d) speed.
*October 7, 2014 by Favour*

**Physics -Impulse- part 2**

1) A 0.50 kg object is at rest. A 3.00 N force to the right acts on the object during a time interval of 1.50 s a) What is the impulse? b) What is the velocity of the object at the end of this time interval? 2) A 2250 kg car traveling to the west at 20.0 m/s slows down ...
*February 24, 2013 by Isis*

**physics**

Four ropes are tied to a stake, and each is pulled toward a compass direction, N, S, E, or W. A force of 10 lb is applied to the rope pulled toward the east. Forces of 20, 30, and 40 lb are applied toward the south, west, and north, respectively. What is the net force exerted ...
*September 22, 2009 by john*

**help math**

Problem #1 what values for x must be excluded in the following fraction? (x+5)/(-1) my answer i think its none Problem #2 what value for x must be excluded in the following fraction? (x-3)/(4x-5)(x+1) this one i do not know x can not equal 5/4 or -1. Each of these would make ...
*March 18, 2007 by jasort20*

**math**

A farmer plants seeds in a field that is 125 meters long by 75 meters wide.The seeds must receive 1 liter of water per square meter every day. How many liters must the farmer apply to the field everyday?
*April 10, 2008 by brandon*

**math**

A farmer plants seeds in a field that is 125 meters long by 75 meters wide.The seeds must receive 1 liter of water per square meter every day. How many liters must the farmer apply to the field everyday?
*April 10, 2008 by brandon*

**physics**

A football kicker lines up to kick a game winning kick. The goalpost is 30m away and the ball must clear the 3.3m high cross-bar. If the kick leaves his foot at an angle of 35 degrees, how fast must the kick be to clear the bar?
*February 13, 2012 by Ed*

**Math Problem (please help)**

A small software company invests $30,000 to produce a software package that will sell for $64.95. Each unit can be produced for $42.25. How many units must be sold to break even? How many units must be sold to make a profit of $100,000?
*August 28, 2014 by Angie*

**Physics - Newton's 2nd Law of Motion**

Under the action of a constant net force, a 3.1-kg object moves a distance of 15 meters in 8.99 seconds starting from rest. What is the magnitude of this net force? I got the answer of 0.58 Newtons, but the book says the solution is 1.2 Newtons. To get this I found the ...
*February 24, 2007 by Mike*

**calculus**

. Sony Ent. is marketing a new smartphone. It determines that in order to sell x smartphones, the price per product must be It also determine that the total cost of producing x smartphones is given by a. Find the total revenue, R(x). b. Find the total profit, P(x). c. How many...
*December 15, 2012 by yaya*

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