Wednesday

March 4, 2015

March 4, 2015

Post a New Question | Current Questions

**Physics**

Janet jumps off a high diving platform with a horizontal velocity of 2.71 m/s and lands in water 1.6s later. How high is the platform? Acceleration of gravity is 9.8m/s^2. Answer in units of m.
*Tuesday, November 18, 2014 at 11:21pm*

**English**

Lina went on her first diet in High school for three days she ate nothing but carrot sticks, cottage cheese, and apples. Then scarfed down two double sentence cheeseburgers with fries and a chocolate shake. Her other attempts at dieting didn’t last much longer. By ...
*Tuesday, November 18, 2014 at 10:30pm*

**trigometry**

vertical pole 20 feet high is sighted horizontally from a point 75 feet from its base up the sloping side site of a hill on which it rest.what is the inclination of the slope?
*Tuesday, November 18, 2014 at 9:26pm*

**Math**

Mr. Sugar baked a sheet cake in the shape of a rectangular prism with the deminisions of 20in by 12in by 3in high he is going to spread icing all over the cake except for the bottom what is the total surface area?
*Tuesday, November 18, 2014 at 8:43pm*

**English**

Lina went on her first diet in High school for three days she ate nothing but carrot sticks, cottage cheese, and apples. Then scarfed down two double sentence cheeseburgers with fries and a chocolate shake. Her other attempts at dieting didn’t last much longer. By ...
*Tuesday, November 18, 2014 at 7:49pm*

**School**

Can anyone name 5 types of issues there are at school?
*Tuesday, November 18, 2014 at 6:51pm*

**International Business: Please Check Answer**

Hi, Please help me! I need to know is these is the correct answer for these questions. Thanks for your help! Some countries try to hold the value of their currency within some range against an important reference currency. This is referred to as what? a. A dirty-float system. ...
*Tuesday, November 18, 2014 at 6:28pm*

**math**

how high is a tree that cast a 48ft shadow at the time a 12 ft pole cast a shadow which is 12 ft long. the tree hight is?
*Tuesday, November 18, 2014 at 5:00pm*

**physics**

An Olympic diver falls from rest from the platform 10m high. At what velocity does the diver hit the water is acceleration in 9.8m/s^2. Do I assume "rest" means a initial velocity of 0? Could the formula be: d= (vf^2-vi^2)/2(a) ? as in d=10, a=9.8 vi=0 vf = √(d...
*Tuesday, November 18, 2014 at 3:28pm*

**English (ms.sue)**

Is this a good way to describe silence outside the school gates? silence arose at the school gates. Every so often cars pass by disturbing the peace. The sound that was made was the part time teachers escaping before the chaos and the sound of the wind, whispering rumours. it ...
*Tuesday, November 18, 2014 at 2:49pm*

**English**

How would you describe silence outside the school gates, before the school is about to finish?
*Tuesday, November 18, 2014 at 2:26pm*

**English (Ms.Sue)**

I am writing a description of a school bus stop on a rainy day I am at the part of describing the bus. How would I describe the sound of the typres screeching using metaphors or personification? also How can I describe the condition of the bus to be negative?
*Tuesday, November 18, 2014 at 2:06pm*

**8TH GRADE LANGUAHE ARTS**

It is difficult to escape the influence of television. If you fit the statistical averages, by the age of 20 you will have been exposed to at least 20,000 hours of television. You can add 10,000 hours for each decade you have lived after the age of 20. The only things ...
*Tuesday, November 18, 2014 at 10:44am*

**Language Arts; Trouble with television**

It is difficult to escape the influence of television. If you fit the statistical averages, by the age of 20 you will have been exposed to at least 20,000 hours of television. You can add 10,000 hours for each decade you have lived after the age of 20. The only things ...
*Monday, November 17, 2014 at 10:46pm*

**plane and spherical trigometry**

tower has 57 feet high two objects in a straight line from it are sighted at a angles of a depression of 27 degree and 40 degree 5 minute respectively. find the distance between two objects
*Monday, November 17, 2014 at 10:13pm*

**math**

How high is a tree that casts a 33 foot shadow at the same time a 6 foot pole casts a 4 foot shadow?
*Monday, November 17, 2014 at 8:05pm*

**Business: Help Is Needed ASAP**

Help Is Needed ASAP Hi, Please help me! I need to know is these is the correct answer for these questions. Thanks for your help! Some countries try to hold the value of their currency within some range against an important reference currency. This is referred to as what? a. A ...
*Monday, November 17, 2014 at 6:19pm*

**english**

Elnora unlocked the case, took out the pail, put the napkin in it, pulled the ribbon from her hair, binding it down tightly again and followed to the road. From afar she could see her mother in the doorway. She blinked her eyes, and tried to smile as she answered Wesley ...
*Monday, November 17, 2014 at 4:13pm*

**english**

how would you use personification and metaphors to describe a school bus?
*Monday, November 17, 2014 at 3:56pm*

**English**

Act I of An Enemy of the People Question Think carefully about what each quote might infer about the character and choose the most appropriate answer in the context of the play. Taking one thing with another, there is an excellent spirit of toleration in the town--an admirable...
*Monday, November 17, 2014 at 2:09pm*

**Chem please help**

An object with high thermal energy will also have which of the following? A. Low internal energy B. High kinetic energy C. High potential energy D. Low kinetic energy I have no idea
*Monday, November 17, 2014 at 12:44pm*

**Physics**

a backpack has a massof 8kg.it is lifted and given 54.9 joules of gravitstional potential energy. how high is it lifted? accelerationdue to gravity is g=98 m/s^2.
*Monday, November 17, 2014 at 12:33pm*

**juvenile cime**

what are roles of school administrators and teachers concerning school-based crime issues
*Monday, November 17, 2014 at 12:31pm*

**english**

3. In “The Pigman & Me,” the author creates a mood of suspense by focusing most of the action around a fight between two boys at school. a tree cut almost to its heart. Nonno Frankie’s advice to Paul. concerns about how a girl will react.
*Monday, November 17, 2014 at 2:51am*

**Chemistry**

Please help me with these problems, the book examples very different. I'm really confused. Any help with these will help me immensely. Thank you in advance! What I got were: 1.)c 2.)d 3.)a 4.)c 5.)b 1.) When is any endothermic reaction spontaneous? a.)When ΔSreaction...
*Sunday, November 16, 2014 at 8:56pm*

**Physics**

A ball is thrown horizontally from the top of a building 45.9 m high. The ball strikes the ground at a point 121 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s Find the initial velocity of ...
*Sunday, November 16, 2014 at 6:40pm*

**law**

Are parents and school management playing a suitable role to control increasing school violence? If not, what else can they do to help solve the problem of school violence?
*Sunday, November 16, 2014 at 6:23pm*

**physical education**

A 1kg ball is tossed straight up with a kinetic energy of 196J. How high does it go.
*Sunday, November 16, 2014 at 4:54pm*

**English**

How would you describe waiting at a school bus stop in third person? Also trying to use metaphors and personification.
*Sunday, November 16, 2014 at 6:22am*

**physics**

On the moon, the acceleration due to gravity is only 1.6 m/s/s. If someone on earth can throw a baseball 24.2 m high, how high could he throw it on the moon?
*Saturday, November 15, 2014 at 11:34pm*

**Math**

I am in 6th grade but to me, that doesn't matter because I have high hopes for myself. My question is; How many distinct letter arrangements can be made from the word LETTER with each T on each side? (A) 6 (B) 12 (C) 24 (D) 120 (E) 720 I think it is 24 because if an ...
*Saturday, November 15, 2014 at 9:02pm*

**science **

A 100kg animal walks up a hill 67.5m high. How much potential energy has the animal gained
*Saturday, November 15, 2014 at 2:29pm*

**Psychology**

Here is the scenario. -------------------------------------- Are Smarties as addictive as drugs? A new research study proves that Smarties, Canada’s favourite chocolate candy, are as addictive as cocaine. Cocaine is a psychedelic drug that is known to be highly addictive...
*Saturday, November 15, 2014 at 12:44pm*

**psychology**

Last week, Roger suddenly quit his job. He told his family he had decided to learn carpentry. He purchased a truckload of wood and nails, which now sits in his driveway because he changed his mind and decided to enroll in a school for massage therapy. The school confirms that...
*Saturday, November 15, 2014 at 11:28am*

**pre algebra**

a total of 400 tickets were sold for the school play, they were either adult tickets or student tickets. there were 50 fewer student tickets sold than adult tickets. how many adult tickets were sold
*Saturday, November 15, 2014 at 12:21am*

**math**

how high is a tree that cast a 36ft shadow at the time a 12ft post cast a shadow which is 12 ft. how high is the tree hight
*Friday, November 14, 2014 at 3:50pm*

**physics**

using 6400 km as the radius of earth, calculate how high above earth's surface you would have to be in order to weigh 1/16th of your current weight.
*Friday, November 14, 2014 at 3:07pm*

**8th grade English; Trouble with Television**

The Trouble with Television Robert MacNeil It is difficult to escape the influence of television. If you fit the statistical averages, by the age of 20 you will have been exposed to at least 20,000 hours of television. You can add 10,000 hours for each decade you have lived ...
*Thursday, November 13, 2014 at 9:24pm*

**Chemistry**

I missed a few days of school due to a sick child. I'm reviewing for an exam and the following questions are giving me trouble as I wasn't there when they were reviewed in class. If possible, I need the answer and step-by-step process so I can see what what to do and ...
*Thursday, November 13, 2014 at 9:15pm*

**Chemistry**

I missed a few days of school due to a sick child. I'm reviewing for an exam and the following questions are giving me trouble as I wasn't there when they were reviewed in class. If possible, I need the step-by-step process. Thanks. 1.) If you put hydrogen peroxide on ...
*Thursday, November 13, 2014 at 7:25pm*

**Math**

16 students do not prefer school uniform. 4 students prefer school uniform. What percent prefer uniforms and what percent do not. What is the relationship between these two percents?
*Thursday, November 13, 2014 at 5:33pm*

**English...PLEASE CHECK THIS**

Here is the second bit of my description of a school dining hall. Can you please check it and suggest any improvements with my vocabulary and my attention to detail. If possible can you help me to include metaphors and personification, where possible....Thank you Back at the ...
*Thursday, November 13, 2014 at 2:36pm*

**physics**

A 3 point jump shot is released 2.2 m above the ground, 6.14 m from the basket, which is 3.06 m high. For launch angles of 30° and 60°, find the speed needed to make the basket.
*Thursday, November 13, 2014 at 2:28pm*

**English**

Im writing a description of a busy school dining hall. One of my paragraphs is as follows : In the snake like queue one of the boys, who had pushed in stood with pride and joy. But not for long. 'You, yes you. Get to the back NOW!' The principle demanded with absolute ...
*Thursday, November 13, 2014 at 12:51pm*

**kamal model school**

what is increase in entropy when 11.2 l o2 mixed 11.2 l h2 at stp
*Thursday, November 13, 2014 at 9:37am*

**Biochem**

Computers English Foreign Languages Health Home Economics Math Music Physical Education Science Social Studies GRADE LEVELS Preschool Kindergarten Elementary School 1st Grade 2nd Grade 3rd Grade 4th Grade 5th Grade 6th Grade 7th Grade 8th Grade High School 9th Grade 10th ...
*Thursday, November 13, 2014 at 8:07am*

**Chemistry (Equilibrium)**

At high temperature, 0.500 mol of HBR was placed in a 1.00L container where it decomposed to give the equilibrium: 2HBr <==> H2 + Br2 At equilibrium, the [Br2] is 0.0855 mol/L. What is the value of the equilibrium constant? My work: ..2HBr <==> H2 + Br2 I 0.500M...
*Thursday, November 13, 2014 at 5:51am*

**math**

We did not find results for: a conical tank with its vertex down is 12 feet high and 12 feet in diameter at the top. water is being pumped in at the rate of 8 feet cubed per minute. find the rate at which the water level is rising when the water is 4 feet deep.
*Wednesday, November 12, 2014 at 11:31pm*

**Can some one check my finance answers please**

Which of the following best states the difference between seed capital and startup capital? Seed capital is for research and planning while startup capital is for operating expenses. Seed capital is provided by venture capitalists while startup capital is provided by banks. ...
*Wednesday, November 12, 2014 at 8:36pm*

**physics- energy and work**

A 47.6-kg diver steps off a 10.82 m high diving board and drops straight down into the water. If the diver comes to rest 5.3 m below the surface of the water, determine the average resistance force exerted on the diver by the water. What is the total displacement of the diver?...
*Wednesday, November 12, 2014 at 6:20pm*

**Finance **

Which of the following best states the difference between seed capital and startup capital? Seed capital is for research and planning while startup capital is for operating expenses. Seed capital is provided by venture capitalists while startup capital is provided by banks. ...
*Wednesday, November 12, 2014 at 6:14pm*

**Algebra 2 HELP plz**

An object is launched upward with an initial velocity of 64 feet per second from a platform 80 feet high. 1.) Write a height model for the object. I wrote my model as .... h=-16t^2 +64t +80 2.) How many seconds until the maximum height is reached? I had 2 seconds as my answer ...
*Wednesday, November 12, 2014 at 2:52pm*

**Science**

One of the accessory pigments used in photosynthesis is beta-carotene, a carotenoid found in high concentration in carrots. When one molecule of beta-carotene is split by an enzyme, two molecules of vitamin A are produced. Removal of a hydrogen atom from vitamin A produces ...
*Wednesday, November 12, 2014 at 2:17pm*

**St Ans School**

A number is as much less than 75 as it is greater than 45. Find the number?
*Wednesday, November 12, 2014 at 9:40am*

**Physics**

an object of mass 5 kg has initial speed of 8 m/s it is sliding across an 8 m long table and has a coefficient of friction of .204 with the table sitting at the edge of the table is a 3 kg object at rest the 5 kg object collides and sticks to the 3 kg object if table is 1.2 m ...
*Wednesday, November 12, 2014 at 8:18am*

**UNION UNIVERSITY**

Find the Z score for the weights of Middle school boys which are approximately Normal, mean = 130 lbs, Standard Deviation = 7, if Johnny weighs 148 lbs, What's his Z score?
*Wednesday, November 12, 2014 at 1:00am*

**English**

She didn't give up and went to see a famous Chinese general, the head of another flight school. -------------------------- Instead of 'head,' can we use 'principal'? Or can we use some other similar expressions?
*Wednesday, November 12, 2014 at 12:40am*

**English**

1. In 1924, she finally entered flight school. 2. In 1924, she finally entered the flight school. 3. In 1924, she finally entered a flight school. ----------- Which one is grammatical or commonly used?
*Tuesday, November 11, 2014 at 7:01pm*

**English**

How can you describe a school dinner hall? I want to include senses, metaphors and personification. Any help will be very much appreciated Thank you
*Tuesday, November 11, 2014 at 2:42pm*

**World History Answer Check (Ms. Sue) **

1. How did the Schlieffen Plan contribute to he outbreak of World War I? A: The Schlieffen Plan contributed to the outbreak of World War I as it called for a two-front war with France as Russia. According to this plan, Germanh would conduct a small holding against Russia while...
*Tuesday, November 11, 2014 at 1:59pm*

**physics**

A gas molecule at the surface of the earth happens to have the root mean square speed (rms)for that gas at 0°C.lf it were to go straight up without colliding with other molecules.How high would it rise and what would happen to the maximum height reached if a gas with ...
*Tuesday, November 11, 2014 at 5:59am*

**Math help please!!!!!**

The ladders shown below are standing against a wall at the same angle.How high up the wall does the longer ladder go?(All meausurements are in feet.) The long side of the big ladder ie 30 and the other side is X. Smaller ladder is 24 and 10. A.11.25ft B.12.5ft C.14 ft D.14ft ...
*Monday, November 10, 2014 at 6:55pm*

**Early Childhood/Homem school and comm.**

Which part of RERUN describes when you try to see both point of view? a. Reflect b. Explain c. Reason d. Understand I chose a
*Monday, November 10, 2014 at 2:46pm*

**Early childhood/home school and community**

Judging a child based on the way the child dresses is an example of: a. racism b. classism c. ageism d. gender bias I thought d
*Monday, November 10, 2014 at 2:43pm*

**statistics**

It is known that 10 % of a school's athlete population uses drugs. The Athletic Director gives a drug test which registers correctly as positive in 82 % of the cases where the drug is present and correctly as negative in 96 % of the cases where the drug is absent. One ...
*Monday, November 10, 2014 at 5:40am*

**physics**

During a baseball game, a batter hits a pop-up to a fielder 92m away. The acceleration is 9.8 m/s^2. If the ball remains in the air for 5.8 seconds, how high does it rise?
*Sunday, November 9, 2014 at 10:39pm*

**physics**

A cricket pitch roller of diameter 1.5 m has a mass of 450 kg; it is pulled by a handle attached to its centre. Find the minimum force to pull up a step which is 250 mm high if the roller handle makes an angle of 30o with the horizontal.
*Sunday, November 9, 2014 at 8:09pm*

**physics**

A 7.75 kg(75.95 N)box is placed on a 29.7° incline on top of a lab table. The ramp is 3.11 m long, at the bottom of the incline the box slides horizontally for a short distance before rolling off the lab table. If the table is 0.84 m high, find how far from the table the ...
*Sunday, November 9, 2014 at 8:05pm*

**Math - Word problem**

I posted this earlier and received a reply - but the reply doesn't make sense. I drew up a picture of what was posted, but the figure comes out to finding the hypotenuse of a triangle that is 16x14 - not 16x10. What am I not seeing? Original problem: There is a room 10 ...
*Sunday, November 9, 2014 at 6:27pm*

**Engineering science**

a roller of diameter 1.5 m has a mass of 450 kg; it is pulled by a handle attached to its centre. Find the minimum force to pull up a step which is 250 mm high if the roller handle makes an angle of 30o with the horizontal
*Sunday, November 9, 2014 at 2:22pm*

**Math -word problem**

There is a room 10 feet high by 10 feet wide by 10 feet in length. On one wall, there is an electrical outlet 1 foot from the floor and centered five feet from each side of the wall. On the opposite wall, one foot from the ceiling and centered five feet from each side of the ...
*Sunday, November 9, 2014 at 12:33pm*

**Physics test review**

A ball is thrown horizontally from the top of a building 30.1 m high. The ball strikes the ground at a point 66.8 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s Find the initial velocity of ...
*Saturday, November 8, 2014 at 9:37pm*

**Physics**

A ball is thrown horizontally from the top of a building 30.1 m high. The ball strikes the ground at a point 66.8 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Find the time the ball is in motion. Answer in units of s
*Saturday, November 8, 2014 at 9:32pm*

**Physics**

A 4.80kg cat leaps from the floor to the top of a 94.0-cm-high table. If the cat pushes against the floor for 0.230s to accomplish this feat, what was her average power output in hp during the pushoff period?
*Saturday, November 8, 2014 at 8:53pm*

**Trigonometry**

An airplane approaches an airport. At a certain time, it is 939 m high. Its angle of elevation measured from the airport is 19.5◦. To the nearest metre, how far is the plane from the airport?
*Saturday, November 8, 2014 at 7:47pm*

**Physics**

The spring shown in the figure is compressed 59cm and used to launch a 100 kg physics student. The track is frictionless until it starts up the incline. The student's coefficient of kinetic friction on the 30∘ incline is 0.14 . k= 80,000 N/m m=100 kg uk= .14 DeltaX= ...
*Saturday, November 8, 2014 at 7:40pm*

**Spanish Help? Please.**

Explain how an interlocking schedule at a Puerto Rican school works. Why are interlocking schedules used? Why is it not always necessary to include a subject pronoun before the verb in Spanish? What is the heritage of many of the students at Miami High School? Explain why so ...
*Saturday, November 8, 2014 at 4:22pm*

**Trigonometry**

Round answer to two significant digits A telephone pole 40 feet high is situated on an 13° (H) slope from the horizontal. The measure of angle CAB is 21°. Find the length of the guy wire AC.
*Saturday, November 8, 2014 at 8:10am*

**Trigonometry**

A telephone pole 40 feet high is situated on an 13° (H) slope from the horizontal. The measure of angle CAB is 21°. Find the length of the guy wire AC.
*Saturday, November 8, 2014 at 8:09am*

**AP CALC. AB**

Please help me with this problem and please walk me through each step i am really confused. Sand is falling from a rectangular box container whose base measures 40 inches by 20 inches at a constant rate of 300 cubic inches per minute. a) how is the depth of the sand in the box...
*Friday, November 7, 2014 at 8:59pm*

**physics**

a school bus traveling along a straight road from school was found to be 2.0km North of the school 4minutes later. In another 4minutes it was 4km West of the school. Draw the position of the bus from school.
*Friday, November 7, 2014 at 8:53pm*

**reading **

1.I usually don’t like to admit this, but at one time I disliked history. My teacher, Mr. Wittmeyer, was wonderful, and the material seemed interesting. When I listened to his lectures, however, I inevitably drifted off, got called on to answer, and had absolutely no clue...
*Friday, November 7, 2014 at 8:30pm*

**Physics **

block slides across table with initial speed of 8 m/s coefficient of friction between block and table is .5 and table is 4 m long and 1.2 m high determine how far the block lands from the base of the table
*Friday, November 7, 2014 at 9:09am*

**ALakh narayan sing high school Ekma saran**

Solve the Mathod of substitution 1/6(2x+3y)+x/3=8,1/2(7y-3x)-y=11
*Friday, November 7, 2014 at 12:22am*

**physics**

How high must your roof be to fire 1.2km if it fires at 450 m/s muzzle velocity?
*Thursday, November 6, 2014 at 11:29pm*

**physics**

A cannon rests on the ground at 40 degree angle it fires a ball at 200 m/s how high is the top of trajectory? At what impact speed does it rest? How far away does it land?
*Thursday, November 6, 2014 at 11:16pm*

**Language arts Help**

When MacNeil says that much of television news is "machine gunning with scraps," he means that A. Television news covers too much violent crime. B. Television news stories are too short and fast. C. Television news covers war too much. D. Television news lacks high-...
*Thursday, November 6, 2014 at 11:09pm*

**Intermediate Algebra **

Atmospheric carbon dioxide levels continue to increase and are suspected to contribute to global warming. The solution to the polynomial equation x3 – 380x2 + 2x – 760 = 0 gives the record high amount of carbon dioxide in parts per million (ppm) in 2005, as measured ...
*Thursday, November 6, 2014 at 9:54pm*

**Science**

Water is pumped from a stone basin up through a pipe 1 meter high. At that height, the water flows out through a tap and falls down through the air to the basin below, where the cycle begins again. What is the gravitational potential energy of 2.5 kilograms of water at the top...
*Thursday, November 6, 2014 at 9:06pm*

**math**

a boy standing on a vertical cliff 50m high is looking down an angle of depression of 20 degree at a car. how far is the car from the base of the cliff?
*Thursday, November 6, 2014 at 7:34pm*

**college statistics **

the math SAT scores for all students who applied to the school of engineering are normally distributed with M=629 and standard deviation of 60. the school of engineering has decided to accept those students whose scores fall in the top 15%. what is th minimum score an appliant...
*Thursday, November 6, 2014 at 6:34pm*

**math**

a football player attempts a field goal from a distance of 52 yards. The ball reaches a maxium height of 9 yrds and lands 8 yards behind the uprights. If the uprights are 3 yards high. algebraically determine if the field goal was successful
*Thursday, November 6, 2014 at 6:28pm*

**physics**

A 15 kg rock is horizontally from very high cliff at a speed of 65m/s. what is the speed of the rock after it has fallen a vertical distance of 35m?
*Thursday, November 6, 2014 at 6:10pm*

**math**

Kelly has 4 times as many songs on her music player as Lou. Tiffany has 6 times as many songs on her music player as Lou. Altogether, they have 682 songs on their music players. How many songs does Kelly have. Please teach me the steps on how to do it I`m having trouble on ...
*Thursday, November 6, 2014 at 4:36pm*

**Please Check Answers for Health**

Please check my answers because I need to do good at this. 1. When consuming fats the healthiest choice is foods high in? A. saturated fats B. unsaturated fats * C. trans fat D. cholesterol 2. The body's main energy source should come from what essential nutrient? A. ...
*Thursday, November 6, 2014 at 4:35pm*

**Health and Physical Education 8 - It's urgent!**

Please check my answers because I need to do good at this. 1. When consuming fats the healthiest choice is foods high in? A. saturated fats B. unsaturated fats * C. trans fat D. cholesterol 2. The body's main energy source should come from what essential nutrient? A. ...
*Thursday, November 6, 2014 at 3:54pm*

**statistic**

A student must pass through 12 sets of traffic lights on his way to university. Suppose that each of the lights is green 39.5% of the time, yellow 5.9% of the time, and red 54.6% of the time. Suppose also that the traffic lights function independently (b) What is the ...
*Thursday, November 6, 2014 at 3:37pm*

**Science **

A sled is at rest at the top of a 2 m high slope. The sled has a mass of 45 kg. What is the sled's potential energy?
*Thursday, November 6, 2014 at 11:33am*

**College physics**

In this problem you will estimate the heat lost by a typical house, assuming that the temperature inside is T(in) = 20 degrees celcius and the temperature outside is T(out) = 0 degrees celcius. The walls have fiberglass insulation, which dominates the heat conduction ...
*Thursday, November 6, 2014 at 3:40am*

**physics**

A watermelon falls off of a balcony 14 meters high. How fast is it moving immediately before it reaches the ground? a increases with time b is 0 m/s c remains constant d decreases with time
*Wednesday, November 5, 2014 at 11:58pm*

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