Tuesday

October 21, 2014

October 21, 2014

Total # Posts: 625

**Physics**

A student throws a baseball at a large gong 73 m away and hears the sound of the gong 1.7744 s later. The speed of sound in air is 330 m/s. What was the average speed of the base- ball on its way to the gong? (For simplicity, assume its trajectory to be a straight line.) ...
*May 8, 2011*

**abnomal child psychology**

individuals with mild mental retardation can usually acquire academic skills up to approximatley the_______ grade level. a.second b.tenth c.sixth d.twelfth I went with c. sixth please help.
*May 5, 2011*

**Physics**

A dragster maintains a speedometer reading of 100 km/h and passes through a curve with a constant radius. Which statement is true? 1. The dragster rounded the curve at a changing velocity of 100 km/h. 2. The dragster moved along a straight line at a constant velocity of 100 km...
*April 28, 2011*

**PHysics**

A dragster maintains a speedometer reading of 100 km/h and passes through a curve with a constant radius. Consider the following forces: I) air drag pushing back on the car; II) gravity pulling down on the car; III) the ground pushing up on the car; IV) friction pushing the ...
*April 28, 2011*

**physics**

I was only able to get the first and second question. Not the last two.
*April 27, 2011*

**physics**

A 37 ohm lamp and a 59 ohm lamp are connected in series and placed across a potential of 43 V. What is the equivalent resistance of the circuit? What is the current in the circuit? Answer in units of A. What is the voltage drop across the first lamp? Answer in units of V. What...
*April 27, 2011*

**disease**

Ct scans show evidence of multiple lesions in the white matter of the brain and spinal cord. What nerve disease could this be?
*April 20, 2011*

**PHYSICS**

A thin 2.82 m long copper rod in a uniform magnetic field has a mass of 44.2 g. When the rod carries a current of 0.238 A, it floats in the magnetic field. The acceleration of gravity is 9.81 m/s2 . What is the field strength of the magnetic field? Answer in units of T.
*April 19, 2011*

**physics**

An electron in an electron beam experiences a downward force of 1.9×10^−14 N while traveling in a magnetic field of 6.4 × 10^−2 T west. The charge on a proton is 1.60×10−19. a) What is the magnitude of the velocity? b) What is its direction?
*April 19, 2011*

**math**

Name the lengths of the sides of three rectangles that have perimeters of 14 units.
*April 18, 2011*

**Biology**

The ability to draw from z specific knowledge and experience to make a general explanation is
*April 12, 2011*

**Physics**

In the parallel circuit, if the current put out by the battery is 3 A and the current through R1 is 1 A, what is the current through R2?
*April 9, 2011*

**chemistry**

TNT (trinitrotoluene), an explosive, occurs naturally as an intermediate product of the decomposition of certain types of organic matter. Why does it not explode?
*April 1, 2011*

**chemistry**

TNT (trinitrotoluene), an explosive, occurs naturally as an intermediate product of the decomposition of certain types of organic matter. Why does it not explode?
*April 1, 2011*

**math problem**

the united kingdom,denmark,and norway have a total of 20 territories. norway has 1/5 as many territories as the united kingdom.denmark has 2 territories.how many territories does norway have?
*March 31, 2011*

**Biology**

What will happen to a turgid plant cell with an initial water potential of 0.5 MPa when dropped into a large beaker of water and solute that has a water potential of -1.5 MPa?
*March 27, 2011*

**5th grade math**

How can you change 320%to a decimal and a fraction
*March 9, 2011*

**5th grade math**

How to change 6/8 into a decimal, and into a percent can someone help me please
*March 9, 2011*

**Writing**

How can I make these sentences better and more "personal"? 1) As a teenager, my priority is to go to school and do well in all my classes. Outside of the classroom I have many interests and hobbies, such as dancing, and helping out in my community. 2) Kelvin is from ...
*March 4, 2011*

**chemistry**

LiOH + CO2 ----> Li2CO3 + H2O 1. how I can balance the equation?
*March 4, 2011*

**chemistry**

I need a problem: LiOH + CO2 ---> Li2CO3 + H2O 1. to balance the equation? 2. write the reasons estequiometricas with regard to Li2CO3? 3.how much do masses of Li2CO3 form if we add 37g of LiOHa to the Rxn? thanks
*March 4, 2011*

**quemistry**

I NOT UNDERSTAND
*March 4, 2011*

**quemistry**

Br2 + Cl2 ---> 2BrCl 1. FIND ALL THE REASONS ESTEQUIOMETRICAS WITH REGARD TO Cl2. 2. all the masses of Cl2 are needed to form 55g of BrCl. 3. all the grams of Br2 are needed to form 38g of BrCl. please I need help for this question for a homework. thanks
*March 4, 2011*

**chemistry**

Br2 + Cl2 ----> 2BrCl all estequiometicas con respecto a Cl2? cuantos moles de Cl2 se necesitan para formar 55g de BrCl? cuantos gramos de Br2 se necesitan para formar 38G de BrCl? Gracias,
*March 4, 2011*

**phsyics**

Light enters a plate of borosilicate crown glass at an angle of 40.2 degrees with respect to the nor- mal to the air-glass surface. If the index of refraction of the glass is 1.52, find the angle made by the refracted beam with the normal. Answer in units of .
*February 27, 2011*

**phyics**

A mechanic pushes a(n) 3980 kg car from rest to a speed of v, doing 5107 J of work in the process. During this time, the car moves 29.3m. Neglect friction between car and road. Find the speed v. Answer in units of m/s.
*February 27, 2011*

**Psychology**

What are some problems with the following research study and how can I improve them? A researcher is interested in testing whether violent films make people more aggressive (the hypothesis). He asks his research assistants to wait outside the Friday night showing of Die ...
*February 25, 2011*

**3rd grade math**

why is school hard
*February 24, 2011*

**physics**

Estimate the force a person must exert on a string attached to a 0.120 kg ball to make the ball revolve in a circle when the length of the string is 0.600 m. The ball makes 1.20 revolutions per second. Do not ignore the weight of the ball. In particular, find the magnitude of ...
*February 6, 2011*

**Medical Information Management **

Accouding to a December 4 hospital census of 100, what are the total inpatient service days for December 5? Admissions 10 Discharges 2 A&D 1 A. 90 B. 109 C. 100 D. 110
*January 20, 2011*

**English**

How do I diagram this sentence? "They were made more cruel by the exposure of their position aloft on high seats." I don't know what to do with "aloft on high seats."
*December 28, 2010*

**grammar**

My teacher corrected a sentence, but wants me to explain why she is correct. I wrote: "Franklin acknowledges how difficult achieving perfection is, and how many have failed at it just like him." She corrected it to read: "Franklin acknowledges how difficult ...
*December 6, 2010*

**Calc**

A certain item sells for $30. If the cost of producing this item is given by C = .05s^3 + 100, find the marginal profit when x = 10.
*December 3, 2010*

**trig**

prove cosx+cotx/secx+tanx =cosxcotx
*December 3, 2010*

**Math**

cosx+cotX/secX+tanx=cosxcotx
*December 2, 2010*

**Grammar**

1. "catch" will change to "caught"? 2. developed --> develops believed --> believes was --> is will encounter --> encouenters was working --> are working was --> is Are these correct?
*November 11, 2010*

**Grammar**

In the paragraphs below, look for shifts in verb tense. In each paragraph, cross out these verb shifts and replace them so that there is verb tense consistency. Write in the correct form of the verb above what you have crossed out. 1. I watched the small children with their ...
*November 11, 2010*

**Math**

1. Points Q,R,S, and T lie on a circle with center P. If the radius of the circle is 1, what is the value of PQ+PR+PS+PT? 2. If 10^ab= 10,000, where a and b are positive integers, what is one possible value of a? 3. In the plane, the line 2x-3y=c passes through the point (5, -...
*November 5, 2010*

**chemistry**

Can someone help me with this question? what two conditions must be met by a thermochemical equation so that its standard enthalpy change can be given the symbol delta Hf?
*October 12, 2010*

**chemistry**

what two conditions must be met by a thermochemical equation so that its standard enthalpy change can be given the symbol delta Hf?
*October 12, 2010*

**College Chemistry-Please help me**

Are you looking for total net equation?
*October 4, 2010*

**math**

if the circumference of a circle is 16 meters,what is the approximate area of the circle
*October 2, 2010*

**English**

In the sentence, "He loves to watch television.", what part of speech is the word loves?
*September 29, 2010*

**Statistics**

A i think
*September 26, 2010*

**Math**

1. X^2= 4Y^2 and x=2y+1 Sooo i substitute (2y+1)^2= 4y^2 Find the square root of both sides 2y+1= 4y Solve for y 2y+1=4y 1=4y .25=y Substitue into X=2y=1 x=2(.25)+1 x=.5+1 x=1.5 But thats not an option.What did i do wrong?
*September 26, 2010*

**Math**

1.The square of x is equal to 4 times the square od y. If x is 1 more than twice y, what is the value of x? A) -4 B) -.5 C) -.25 D) .25 E) .5 2.In the xy-coordinate plane, lines L an Q are perpendicular. If line L contains the points (0,0) and (2,1), and line Q contains the ...
*September 26, 2010*

**Math**

1. In the 30 day month of April, for every three days it rained, there were two days it did not rain. The number of days in April on which it rained was how much greater than the number of days on which it did not rain? 2. Each terms of a certain sequence is greater than the ...
*September 24, 2010*

**health care**

Hospitals that are excluded from the Medicare acute care PPS (such as children's hospitals) are paid based on a. reasonable costs b. fee schedules c. global payments d. bundled payments
*September 23, 2010*

**math**

how do you write in word form 204,500,040.
*September 19, 2010*

**physics!!!**

a sled and rider with a combined weight of 60kg are at rest on top of a hill 12m high.what is the total energy at the top of the hill?
*September 7, 2010*

**PHYSICAL SCIENCE**

A 0.50-KG BLOCK INITIANALLY ON A REST ON A FRICTIONLESS HORIZONTAL SURFACE IS ACTED UPON BY A FORCE OF 8.0N FOR A DISTANCE OF 4.0M. HOW MUCH KINETIC ENERGY DOES THE BLOCK GAIN?
*September 7, 2010*

**math**

is the answer for 3y+8=-13 be y=-7?
*August 31, 2010*

**math**

if i know the domain of an equation is any real number except 3/7 how can i express it in interval notation? Thanks!
*August 23, 2010*

**Grammar**

dissatisfied. In this sentence should it be will or would? Why will I want to have everything except for love?
*July 21, 2010*

**Grammar**

I meant kids that get everything they want often want more. Like they begin to believe that being spoiled with items is not everything.
*July 21, 2010*

**Grammar**

Is this sentence grammatically correct? If not how can i fix it? Those who do have what they want crave for more; they want love and affection.
*July 21, 2010*

**Grammar**

Thank you so much! One last question =) What part of speech is there?
*July 20, 2010*

**Grammar**

Can you tell me a sentence that doesnt agree with the antecedent in number
*July 20, 2010*

**Grammar**

so I can put which of the two is a possesive pronoun as a question.
*July 20, 2010*

**Grammar**

I really dont know what to put for 6. Help?
*July 20, 2010*

**Grammar**

Is this good for 4? 4) You should take my (advise, advice) when it comes to handling stress.
*July 20, 2010*

**Grammar**

This is a backwards Hw. They give us the answers and we have to come up with questions for each. The questions should be about homophones, adjectives and adverbs, pronouns,appositives, and count/noncount nouns. They could be multiple choice, fill in the blanks or anything else...
*July 20, 2010*

**Grammar**

Are the appositives essential or non essential? 1. My son, the policeman, will be visiting us next week. 2. The captain ordered the ship's carpenters to assemble the shallop, a large rowboat. 3. Walter, the playboy and writer, is very attached to his mother, Mrs. Hammon. 4...
*July 17, 2010*

**MATH HELP ASAP**

PLEASE. 1. A frog jumps from a rock to the shore of a pond. Its path is given by the equation y=(-5/72)x^2+(5/3)x, where x is the horizontal distance in inches, and y is the height in inches. What is the frog's maximum height? How far had it traveled horizontally when it ...
*July 13, 2010*

**Writing**

Those this sound like a personal easy? Is it a good hook? After reading so many books, I have to admit that this was the first to make me cry. My dream goal is to become a psychologist. At first I was confused and undecided but by reading this book I made up my mind. As I read...
*July 13, 2010*

**Grammar**

1. The worker (who,whom) left the empty soda can on the computer. 2.Between you and (I,me), Greg will lose. 3.Do not give any money to (he,him) or (I,me). 4.(She,Her) and i were high school sweet hearts. 5.Often (we,us) boys will play hockey just for fun. Theres alot more. ...
*July 13, 2010*

**Pre-calc**

For 2 I did the function and got n=-1. then i substitute it in and got 11.5 is that the answer? if so to which of the 2 questions?
*July 13, 2010*

**Pre-calc**

1. Find the equation for a quadratic function whose vertex is (2,5) and whose graph contains the point (-8,15). 2.What are the x- and y- intercepts for y=2x^2+x-6 Plesee explai. I want to learn to learn how to do them.
*July 12, 2010*

**math **

There are five girls and five boys at a party. In how many ways can they be seated in a row of six?
*June 30, 2010*

**math**

Consider a state lottery that has a weekly television show. On this show, a contestant receives the opportunity to win $1 million. The contestant picks from four hidden windows. Behind each is one of the following: $150,000, $200,000, $1 million, or a "stopper". ...
*June 17, 2010*

**Government**

I'm rather confused about the whole Social Security may go bankrupt thing...since our nation is $14+ trillion dollars in debt, why would Social Security benefits stop if money runs out, since we borrow for everything else?
*June 13, 2010*

**health service manager**

What are some of the operations mangement practices that can help bring manufacturing back to the U.S? How can a focus on quality improve manufactoring?
*June 6, 2010*

**7th grade**

To find what X is, you would divide -4 into -76. This makes X=19
*May 4, 2010*

**math**

how do i find 1/3 of 9 2/5 of 25
*April 13, 2010*

**math 4th grade**

thank you
*April 13, 2010*

**math 4th grade**

no to sure how to do this
*April 13, 2010*

**math 4th grade**

it is 3/50
*April 13, 2010*

**math 4th grade**

lets say i'm not allow to use a calculator how else will i beable to solve this
*April 13, 2010*

**math 4th grade**

how do i put the following fractions in order from least to greatest: 3/7, 3/50, 3/2, 3/3, 3/4 please help
*April 13, 2010*

**chemestry**

how many moles of ammonia contain 1.51 x 10 24power NH3 molecules need help with formula please
*April 13, 2010*

**French**

If you're using the future tense, should the second verb be in the future as well? I'm trying to say I would like to study journalism. Is it J'aimerais etudier journalisme OR J'aimerais etudierai journalisme? Merci beaucoup!
*April 8, 2010*

**math**

tian's daughter will be 5/6 of a year old next week.how many months old will she be
*March 17, 2010*

**math**

thank you
*March 16, 2010*

**math**

which is bigger 16/50 or 9/30
*March 16, 2010*

**english**

i have to write a critical lens about this quote: "To provoke dreams of terror in the slumber of prosperity has become the moral duty of literature". by Ernest Fisher what does the quote mean?
*March 6, 2010*

**Math**

1.(Y+2)/(Y^2-9) * (4Y+12)/(3Y+6) ÷ 8/(2Y-6) = 2.(4X-Y)/(X+Y) * (X^2-Y^2)/(16X^2-Y^2) ÷ (2X-2Y)/(16X+4Y) = 3.(X^2-25)/(2X+12) * (X^2+8X+12)/(4X-20) ÷ (X^2+7X+10)/8X =
*February 17, 2010*

**Algebra**

1.(Y+2)/(Y^2-9) * (4Y+12)/(3Y+6) ÷ 8/(2Y-6) = 2.(4X-Y)/(X+Y) * (X^2-Y^2)/(16X^2-Y^2) ÷ (2X-2Y)/(16X+4Y) = 3.(X^2-25)/(2X+12) * (X^2+8X+12)/(4X-20) ÷ (X^2+7X+10)/8X =
*February 17, 2010*

**writing**

Ok so one setting is poor/ sharecropper and the other once used to be rich and on the most selective street now its full of machines and factories.
*February 16, 2010*

**writing**

Im having troubke coming up with a thesis.I need to compare setting in two different stories.
*February 16, 2010*

**Writing**

What is a good way to begin a comparison essay?
*February 16, 2010*

**Chemistry**

Based on the balanced equation 2Ba + O2 → 2BaO calculate the number of BaO formula units formed when 54 Ba atoms and 21 O2 molecules react?
*February 15, 2010*

**ecuador**

the currencey used in ecuador is the: A} pero B} sucre C} kina D} pula A little help here plz lol
*February 13, 2010*

**math**

yea i guess
*February 13, 2010*

**helpmplz**

thx:0
*February 13, 2010*

**Math**

A circle is tangent to the y-axis at y=3 and has one x-intercept at x=1, find the other x-intercept and the equation of the circle. ...And if it's not any trouble, could you please explain how to do get there alongside showing me what to do? Thanks (:
*February 8, 2010*

**s.s**

how is sweden's economy similar to the united kingdom's economy
*February 8, 2010*

**writing**

What is another characteristic that will help you get into college?
*February 4, 2010*

**writing**

how does perceverance and responsibility help you get into college?
*February 4, 2010*

**Writing **

How can confidence and determination help succeed in school?
*February 4, 2010*

**Math**

ramey has 27 and judy has 15
*February 4, 2010*

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