Wednesday

July 30, 2014

July 30, 2014

Post a New Question | Current Questions

**physics**

A rocket moves upward, starting from rest with an acceleration of 28.1 m/s2 for 4.76 s. It runs out of fuel at the end of the 4.76 s but does not stop. How high does it rise above the ground?
*Wednesday, October 16, 2013 at 1:45am*

**math**

A Competition Onstage Ever since Lisa auditioned for the musical Annie in the third grade, she had been seriously interested in musical theater. She loves to sing, dance, and act. She performs in two or three shows in her city each year. This year, Lisa was excited to audition...
*Tuesday, October 15, 2013 at 5:32pm*

**psychology**

lesson 15 psychology question james has just lost his wife of 35 years to breast cancer. studies have shown that he will be at high risk for physical ailments, illness, and possibly death for the next :
*Tuesday, October 15, 2013 at 5:24pm*

**math**

Assume each kid in the after school program will get 1/2 cup of lemoade. For each mix, how many batches are needed to make enough lemonade for 120 kids?
*Tuesday, October 15, 2013 at 4:18pm*

**school of engineering**

A train of mass 200 tonne travelling at 140 km/h applies the brakes fiercely , so that the brakes lock and the wheels slides along the rails.it stops sliding 1000m. calculate. 1. The acceleration. 2. The longitudinal force on the rail. 3. The coefficient of friction between ...
*Tuesday, October 15, 2013 at 7:08am*

**school of engineering**

a motor of mass 1500 kg accelerates from 50 km/h to 100 km/h in 10 seconds.calculate. (i)The acceleration in metre/second2. (ii)The distance travelled. (iii)The force on the vehicle.
*Tuesday, October 15, 2013 at 6:59am*

**physics**

A ball is thrown horizontally from the top of a building 32.3 m high. The ball strikes the ground at a point 110 m from the base of the building. The acceleration of gravity is 9.8 m/s 2 . Find the time the ball is in motion. Answer in units of s
*Monday, October 14, 2013 at 10:37pm*

**English**

I read a lot of books for school, so watching movies is better for me. (What is the meaning of 'school' here?)
*Monday, October 14, 2013 at 9:37pm*

**Science**

A boy standing on a high diving board has a mass of 45 kg and a total gravitational potential energy of 2700 j. How high is the diving board? What is the answer to this question and how did you come up with the answer.
*Monday, October 14, 2013 at 5:59pm*

**Statistics**

Smoking habit Socioeconomic status High Low Smoking 15 40 55 Not smoking 25 10 35 Total 40 50 N=90 a. For these ordinal variables, which hypothesis testing is appropriate to test the relationship between SES and smoking habits variable? b. Write the HO and H1 c. Perform the ...
*Monday, October 14, 2013 at 3:42pm*

**statistics**

1. In an ANOVA, one group has a much larger sample mean than the other. The analyst decides to remove this group and to conduct the analysis on the remaining groups only. Which of the following statements is correct? Select one: a. This analysis is not correct, as now the ...
*Monday, October 14, 2013 at 7:36am*

**macroeconomics**

on the other hand could the output of the economy for the future generation set forth in high level if the consumer consumed their disposable income after the taxes deducted on their income received from firm?
*Monday, October 14, 2013 at 1:55am*

**macroeconomics**

on the other hand could the output of the economy for the future generation set forth in high level if the consumer consumed their disposable income after the taxes deducted on their income received from firm?
*Monday, October 14, 2013 at 1:52am*

**macroeconomics**

is high income good?could the growth rate of the economy will become high if the individual tend not to consume the income receive by them from firm?
*Monday, October 14, 2013 at 1:48am*

**chemistry**

Electron exhibiting a particle wavelength of 6.81 x 10-9 are emitted from hydrogen atoms after interaction with high energy photons. Assuming that the electrons in the hydrogen atom were in their ground state prior to interaction, determine the wavelength of the photon which ...
*Sunday, October 13, 2013 at 6:43pm*

**help**

Assume that the salaries of elementary school teachers in the U.S. are normally distributed with a mean of $37,000 and standard deviation of $3500. The cutoff salary for teachers in the bottom 12% is
*Sunday, October 13, 2013 at 12:23pm*

**college essay**

can someone help me edit this My Song My existence thus far has been a musical performance. The world is my stage, the platform upon which I express myself creatively. My life is the reputable melody that I play on my guitar, and the notes are my memories and life experiences...
*Sunday, October 13, 2013 at 9:39am*

**Chemistry**

Electron exhibiting a particle wavelength of 5.2 x 10-9 are emitted from hydrogen atoms after interaction with high energy photons. Assuming that the electrons in the hydrogen atom were in their ground state prior to interaction, determine the wavelength of the photon which ...
*Sunday, October 13, 2013 at 4:44am*

**Chemistry**

Electron exhibiting a particle wavelength of 4.02 x 10-9 are emitted from hydrogen atoms after interaction with high energy photons. Assuming that the electrons in the hydrogen atom were in their ground state prior to interaction, determine the wavelength of the photon which ...
*Sunday, October 13, 2013 at 2:25am*

**LA High**

Find the total for the invoice below: Stock # Quantity Unit Description Unit Price Total 6729 20 ea. 15" Monitor $349.00 1259 22 ea. Cable 14.00 1152 25 ea. SCSI card 149.00 Invoice Subtotal Shipping Charges $580.00 Invoice Total
*Sunday, October 13, 2013 at 2:16am*

**Education**

Which trait is valued on the average by U.S. teachers? A) negative emotionality B) slow-to-warm-up C) high activity D) low activity I would think the answer is C, is that correct?
*Sunday, October 13, 2013 at 1:17am*

**nutan.public.high.school.[nandni]-social.science**

what is global warming
*Sunday, October 13, 2013 at 12:54am*

**Psychology/ Ms Sue**

Are my answers correct Ms Sue? 1. One of the characteristic features of school-age children is that they are more likely than younger children to try to conform to peer standards in such matters as clothing and language? True 2. School age children have a more elaborate ...
*Saturday, October 12, 2013 at 4:41pm*

**Survey Math **

A survey of 240 10th grade students in a local High School found that there were 140 girls and 100 boys in the grade. Of the 140 girls, 100 preferred gym class while 40 preferred art class. Of the 100 boys, 40 preferred gym class while 60 preferred art class. Construct a data ...
*Saturday, October 12, 2013 at 11:20am*

**CHEMISTRY...........**

1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? My answer: (0.961 atm)(29.0 L) (413k) all divided by (413)(0.961 atm)=29.0 L CO2 29.0 L CO2 x 2LH2O/...
*Friday, October 11, 2013 at 10:58pm*

**physics**

Pilots of high-performance fighter planes can be subjected to large centripetal accelerations during high-speed turns. Because of these accelerations, the pilots are subjected to forces that can be much greater than their body weight, leading to an accumulation of blood in the...
*Friday, October 11, 2013 at 9:10pm*

**math**

Ram Dubey recently purchased a chain of dry cleaners in North Uttar Pradesh. Although the business is making a modest profit now, Ram suspects that if he invests in a new press, he could recognize a substantial increase in profits. The new press costs $ 15,400 to purchase and ...
*Friday, October 11, 2013 at 12:28am*

**math**

Mary is baking cookies for her school bake sale. For every 5 chocolate chip cookies she makes 2 oatmeal raisin cookies. If she keeps this ratio, and bakes 84 cookies total, what will be the ratio of chocolate chip cookies to oatmeal raisin cookies?
*Thursday, October 10, 2013 at 9:08pm*

**Chemistry**

Please help and explain each problem. PLEASE!!!! 1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air is 20.9% oxygen by volume, a. how many ...
*Thursday, October 10, 2013 at 8:41pm*

**Math Word Problem**

During the summer throughout high school and for a year after, Lewis worked as a lifeguard at the beach. In that 5-year period, he saw a total of 461 dolphins swimming in the distance. About how many did Lewis spot per summer in the 5 summers he worked?
*Thursday, October 10, 2013 at 7:57pm*

**CHEMISTRY**

1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air is 20.9% oxygen by volume, a. how many liters of air are needed for complete combustion of 25...
*Thursday, October 10, 2013 at 7:06pm*

**math**

what are some arrays that add up to 24 are at least 2 high but no taller than 8 high?
*Thursday, October 10, 2013 at 4:44pm*

**Physics**

High-speed motion pictures (3500frames/second) of a jumping 280ìg flea yielded the data to plot the flea's acceleration as a function of time as shown in the figure (Figure 1). This flea was about 2 mm long and jumped at a nearly vertical takeoff angle. Find the ...
*Thursday, October 10, 2013 at 9:45am*

**English**

1. I went on a school field trip to Jeju Island. 2. I went on a school trip to Jeju Island. 3. I went on a study trip to Jeju Island. 4. I went on a study tour to Jeju Island. 5. I went on a study travel to Jeju Island. 6. I went on a field trip to Jeju Island. (Which ...
*Thursday, October 10, 2013 at 4:55am*

**CHEMISTRY........**

i TRIED TO DO IT, BUT MY ANSWERES ARE WRONG. Please show work and explain. 1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air is 20.9% oxygen by...
*Thursday, October 10, 2013 at 1:03am*

**Algebra 2**

At the ruins of Caesarea, archaeologists discovered a huge hydraulic concrete block with a volume of 945 cubic meters. The block's dimensions are x meters high by 12x - 15 meters long by 12x - 21 meters wide. What is the height of the block? Can someone please show me how ...
*Wednesday, October 9, 2013 at 9:18pm*

**math**

At the ruins of Caesarea, archaeologists discovered a huge hydraulic concrete block with a volume of 945 cubic meters. The block's dimensions are x meters high by 12x - 15 meters long by 12x - 21 meters wide. What is the height of the block? I have no idea how to do this. ...
*Wednesday, October 9, 2013 at 8:30pm*

**Language Arts**

2) Read the following passage from “Icarus and Daedalus”: He fell like a leaf tossed down the wind, down, down, with one cry that overtook Daedalus far away. When he returned, and sought high and low for the poor boy, he saw nothing but the bird-like feathers afloat ...
*Wednesday, October 9, 2013 at 7:21pm*

**Math**

The average high temperature in Alaska in January is -37F. If the average high temperature in Siberia for January is -83F how much warmer is it in Alaska compared to Siberia? A.120 B.54 C.46 D.36 C
*Wednesday, October 9, 2013 at 6:29pm*

**Calculus**

Gravel is being dumped from a conveyor belt at a rate of 10 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always equal. How fast is the height of the pile increasing when the pile is 18 feet high? (Recall that ...
*Wednesday, October 9, 2013 at 3:16pm*

**health and fitness**

CASE STUDY: CHRIS DOUBLE Chris is a high school student and is eager to gain some muscle mass. He eats a diet that consists primarily of processed foods (fast food, cafeteria, etc.). Chris is anxious to get stronger so that he can go out for the wrestling team. CLIENT ...
*Wednesday, October 9, 2013 at 12:29am*

**Algebra**

In Mr. Woo's class, 80% of students live more than half mile from school. Of those students 80% come to school by public transportation. Of those students taking public transportation, 75% takes the bus, and 75% of those students buy monthly bus passes. Nine students buy ...
*Wednesday, October 9, 2013 at 12:25am*

**Math**

A certain school’s enrollment increased 5% this year over last year’s enrollment. If the school now has 1,260 students enrolled, how many students were enrolled last year? A. 1,020 B. 1,197 C. 1,200 D. 1,255 E. 1,323 I got the answer to be 1200, but that's after ...
*Wednesday, October 9, 2013 at 12:25am*

**Math**

A certain school’s enrollment increased 5% this year over last year’s enrollment. If the school now has 1,260 students enrolled, how many students were enrolled last year?
*Wednesday, October 9, 2013 at 12:23am*

**English**

1. They are having an election for school president. 2. They are having an election for the school president. 3. They are having an election for a school president. (Which one is grammatical and commonly used?)
*Tuesday, October 8, 2013 at 7:43pm*

**English**

What is the title for the student who is a representative of all the students in school? is it school president or student president? Would you let me know about that? Thank you.
*Tuesday, October 8, 2013 at 6:56pm*

**Kharkutta govt. School**

Use number line to evaluate the following. (1). -5+(-3) (2). 4-(-4)
*Tuesday, October 8, 2013 at 9:47am*

**Kharkutta govt. School**

Split 597 into three parts such that these are in A.P. and the product of the two smallest parts is 796
*Monday, October 7, 2013 at 11:34pm*

**psychology**

the most important aspects of classical conditioning is that the conditioned stimulus becomes a _______ for the unconditional stimulus: a signal b stimulus generalization c stimulus discrimination d high-color conditioning support
*Monday, October 7, 2013 at 10:26pm*

**finance 571**

Chip’s Home Brew Whiskey management forecasts that if the firm sells each bottle of Snake-Bite for $20, then the demand for the product will be 15,000 bottles per year, whereas sales will be 85 percent as high if the price is raised 16 percent. Chip’s variable cost ...
*Monday, October 7, 2013 at 5:01pm*

**Math**

A man on the 8th floor of a building sees a bucket (dropped by a window washer) pass his window and notes that it hits the ground 1.5s later. Assuming a floor is 12ft high (and neglecting air friction), from which floor was the bucket dropped?
*Monday, October 7, 2013 at 4:58pm*

**Geography (Ms. Sue)**

What is the value placed upon education in the countries of Russia and the Republics? A: The value placed upon education is extremely high in the region?
*Monday, October 7, 2013 at 3:26pm*

**poetry (Pioneer by Dorothy Livesay)**

I have to answer the questions according to this poem, I have answered them but just want someone to look over them to see if they are right. The last one I had trouble with and need help on that one too. The answer that I think it is I have put arrows on them. Help would be ...
*Monday, October 7, 2013 at 11:54am*

**English**

1. I got up late and missed the bus which I had to take in the morning. I was late for school and my teacher got mad at me when I entered my classroom. I had to remain in the classroom to clean it by myself. 2. I got up late and missed the bus number 6 which I had to take in ...
*Monday, October 7, 2013 at 7:48am*

**English**

1. My sister and I took part in school marathon yesterday. 2. My sister and I took part in a school marathon yesterday. 3. My sister and I took part in the school marathon yesterday. 4. My sister and I took part in School Marathon yesterday. 5. My sister and I took part in the...
*Monday, October 7, 2013 at 6:19am*

**Computers**

Hi, Am I on the right track? Reading for an hour now..and wanted to check my answers.. Which modem uses the same medium used to transmit video signals" My answer: C. Cable ADSL BRI DiGITAL '2. Which is the fastest wireless standard? My answer: 802.11G 802.11b WAP WI-...
*Sunday, October 6, 2013 at 10:49pm*

**Physics**

In proton-beam therapy, a high-energy beam of protons is fired at a tumor. The protons come to rest in the tumor, depositing their kinetic energy and breaking apart the tumor’s DNA, thus killing its cells. For one patient, it is desired that 0.10 J of proton energy be ...
*Sunday, October 6, 2013 at 10:14pm*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Sunday, October 6, 2013 at 5:49pm*

**PHYSICS**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Sunday, October 6, 2013 at 4:58pm*

**physics(help)**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Sunday, October 6, 2013 at 4:41pm*

**Physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 42 ∘. The gravitational acceleration is g=10 m/s2 (a) At what ...
*Sunday, October 6, 2013 at 3:52pm*

**Chemistry**

Ethanol (C2H5OH) is synthesized for industrial use by the following reaction, carried out at very high pressure. C2H4(g) + H2O(g) → C2H5OH(l) What is the maximum amount, in kg, of ethanol that can be produced when 1.65 kg of ethylene (C2H4) and 0.0610 kg of steam are ...
*Sunday, October 6, 2013 at 3:13pm*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Sunday, October 6, 2013 at 3:10pm*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Sunday, October 6, 2013 at 3:00pm*

**Physics**

Victor drove his truck off a cliff that was 45m high, and it landed 35m from the base of the cliff. What was the velocity of the truck as it drove off the cliff?
*Sunday, October 6, 2013 at 2:46pm*

**Journalism**

I've started working on an article for my Journalism class about vegetarianism - pros and cons, and why or why not people at my school support it. I've gotten a few paragraphs in, but I'm having trouble on writing the lead. Any suggestions?
*Sunday, October 6, 2013 at 2:37pm*

**Mathematics**

What stepping rate is needed if a person wants to work at a Vo2 of 45 mL/kg/min using a bench that is 34 cm high?
*Sunday, October 6, 2013 at 12:59pm*

**physics(*URGENT*)**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Sunday, October 6, 2013 at 12:54pm*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Sunday, October 6, 2013 at 11:39am*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Sunday, October 6, 2013 at 9:41am*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Sunday, October 6, 2013 at 8:28am*

**Economic's,tourism,geography,pure math's**

What can i study when i finnish school i am doing grade 10
*Sunday, October 6, 2013 at 7:53am*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 45 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Sunday, October 6, 2013 at 7:22am*

**Physics**

A rocket moves upward, starting from rest with an acceleration of 28.1 m/s2 for 5.21 s. It runs out of fuel at the end of the 5.21 s, but does not stop. How high does it rise above the ground?
*Saturday, October 5, 2013 at 8:19pm*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Saturday, October 5, 2013 at 5:33pm*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Saturday, October 5, 2013 at 5:28pm*

**physics**

A toy car runs off the edge of a table that is 1.150 m high. The car lands 0.380 m from the base of the table. It takes 0.48 s for it to fall.How fast was the car going on the table? ______m/s
*Saturday, October 5, 2013 at 5:20pm*

**physics (it's rather urgent help is appreciated**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Saturday, October 5, 2013 at 5:01pm*

**Math**

Mary is passing out school supplies to students in the class. She gives colored pencils to every second student, markers to every third student, and crayons to every fifth student. The second student received all three. Which student will be the next to receive all three?
*Saturday, October 5, 2013 at 4:57pm*

**physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Saturday, October 5, 2013 at 3:32pm*

**Physics**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Saturday, October 5, 2013 at 10:11am*

**URGENT**

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 37 ∘. The gravitational acceleration is g=10 m/s2. (See figure...
*Saturday, October 5, 2013 at 10:09am*

**Geography (Ms. Sue)**

1). In what way does Western Europe have a diverse economy? A: Western Economy has a diverse economy as it includes agriculture and manufacturing, as well as high-tech and service industries.
*Friday, October 4, 2013 at 9:10pm*

**Physics**

A tennis player hits a ball 2.0 m above the ground. The ball leaves his racquet with a speed of 15.0m/s at an angle 5.3∘ above the horizontal. The horizontal distance to the net is 7.0 m, and the net is 1.0 m high. How much did it clear the net by?
*Friday, October 4, 2013 at 4:54pm*

**statistics**

2. The National polling organization conducted a phone survey of 850 American adults on what they considered to be the most serious problem facing nation’s public schools; 30% said violence. This sample percent is an estimate of the percent of all adults who think that ...
*Friday, October 4, 2013 at 12:30pm*

**science**

A hot air balloon descends from a pressure of 380 mm Hg to 760 mm Hg and at the high altitude has a volume of 1,000 cubic meters. If the temperature starts at 50 degrees C and changes to 25 degrees C, the new volume will be: a. 100.0 x 50 x 760/25 x 380 b. 100.0 x 50 x 25/760 ...
*Friday, October 4, 2013 at 10:10am*

**math**

water tower is 11 feet high diameter is 18 feet,how many cubic feet are in this tower?
*Thursday, October 3, 2013 at 11:49pm*

**advance math**

an aquarium is in the shape of a right rectangular prism. each side of the aquarium is a rectangle that is 10 in wide and 8 in high. when the aquarium is tilted, the water in it just cover an 8 in by 10 in end, but only three-fourths of the rectangular bottom. find the depth ...
*Thursday, October 3, 2013 at 10:24pm*

**Physics**

A small lead ball of mass 2kg is suspended at the end of a light string 1m in length. A small peg, 0.5m below the suspension point, catches the string in its swing. The ball is set swinging through small angles. A) What is the period of the pendulum? B) The ball has started ...
*Thursday, October 3, 2013 at 10:07pm*

**Physics**

A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. Such a device is used in medical laboratories, for instance, to cause the more dense red blood cells to settle through the less dense blood serum and collect at the ...
*Thursday, October 3, 2013 at 6:59pm*

**Electricity and Electronics**

1. A transformer has a primary voltage of 115 V and a secondary voltage of 24 V. If the number of turns in the primary is 345, how many turns are in the secondary? A. 8 B. 690 C. 72 D. 1,653 2. To use your left hand to determine the direction of the voltage developed in a ...
*Thursday, October 3, 2013 at 1:47pm*

**science**

For many years pellagra was believed to be an infectious disease promoted by unsanitary conditions. it was common in sanatoriums and orphanages but only among the patients and not the staff. a study of the diets showed that suffers of pellagra rarely ate high quality proteins...
*Thursday, October 3, 2013 at 12:09pm*

**English !!!**

For this assignment, you will write an editorial about an issue that confronts your school or community. What does this mean?
*Thursday, October 3, 2013 at 10:36am*

**Light**

1. If you're driving towards the sun late in the afternoon, you can reduce the glare from the road by wearing sunglasses that permit only the passage of light that's A. dispersed in a spherical plane. B. polarized in a vertical plane. C. polarized in a horizontal plane...
*Thursday, October 3, 2013 at 10:11am*

**w**

i would like to know on what is required for a high chance to get accepted to uc berkeley
*Wednesday, October 2, 2013 at 9:00pm*

**Health**

Which of the following lipoproteins carries dietary fat that is absorbed into the digestive system to the liver and body cells for use? a. Chylomicrons b. High density lipoprotein c. Micelle d. Low density lipoproteins I think its A is that correct?
*Wednesday, October 2, 2013 at 7:23pm*

**Math**

The Johnsons have accumulated a nest egg of $27,000 that they intend to use as a down payment toward the purchase of a new house. Because their present gross income has placed them in a relatively high tax bracket, they have decided to invest a minimum of $1300/month in ...
*Tuesday, October 1, 2013 at 7:20pm*

**Astronomy**

Why didn’t the Universe collapse into a black hole in the past when there was so much matter in such a small space? (a) Most of the particles in the early Universe were unstable and decayed before a black hole could form. By the time only stable particles were left (...
*Tuesday, October 1, 2013 at 5:13pm*

**math - calc**

A conical water tank with vertex down has a radius of 12 feet at the top and is 26 feet high. If water flows into the tank at a rate of 30 {\rm ft}^3{\rm /min}, how fast is the depth of the water increasing when the water is 12 feet deep?
*Tuesday, October 1, 2013 at 3:13pm*

**math - calc**

A conical water tank with vertex down has a radius of 12 feet at the top and is 26 feet high. If water flows into the tank at a rate of 30 {\rm ft}^3{\rm /min}, how fast is the depth of the water increasing when the water is 12 feet deep?
*Tuesday, October 1, 2013 at 3:13pm*

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