Tuesday
October 21, 2014

Posts by Melissa


Total # Posts: 1,118

physics
a father pulls his young daughter on a sled with a constant velocity on a level surface through a distance of 10-m, if the total mass of the sled a the girl is 35-kg and the coefficent of kinetic friction between the sled runners and the snow is 0.20, how much work does the ...
January 26, 2008

physics
you are carring a backpack across campus. What is the work done done by your vertical carring force on the backpack? Explain
January 26, 2008

physics
What,is,the,minimum,coefficient,of,static,friction,between,the,block,and,the,surface,that,will,keep,the,block,from,moving?(F1,=5.0N,F2=4.0N,and.m=5.0kg.)
January 19, 2008

physics
A,package,crate,is,placed,on,a,20,deg,inclined,plane.If,the,coefficient,of,static,friction,between,the,crate,and,the,plane,is,0.65,Will,the,crate,slide,down,the,plane?,justify,your,answer!
January 19, 2008

physics
In,the,ideal,apperatus,m1=,2.0kg.What,is,m2,if,both,masses,are,at,rest?How,about,if,both,masses,are,moving,at,a,constant,velocity?
January 19, 2008

physics
A,horizontial,force,of,40N,actingon,a,block,of,frictionless,level,surface,produces,an,acceleration,of,2.5m/s^2.A,second,block,with,a,mass,of,4.0kg,is,dropped,onto,the,first,.What,is,the,magnitude,of,acceleration,of,the,combination,of,blocks,if,the,same,force,continues,to,act...
January 19, 2008

physics
In,an,emergency,stop,to,avoid,an,accident,a,shoulderstrap,seat,belt,holds,a,60kg,passenger,firmly,in,place.If,the,car,were,initially,traveling,at,90km/h,andcame,to,a,complete,stop,in5.5s,along,a,straight,level,road,what,was,the,average,force,applied,to,the,passenger,by,the,...
January 19, 2008

physics
In,a,homecomming,competition,16,students,lift,a,sports,car.While,holding,the,car,off,the,ground,each,student,exerts,an,upward,force,of,400N.,(a)What,is,the,mass,of,the,car,in,kilograms?,(b)What,is,the,weight,in,pounds
January 19, 2008

phisics
What,is,the,weight,of,150lb,person,in,newtons?,What,is,his,mass,in,kilograms?
January 19, 2008

physics
A,1.5kg,object,moves,up,the,y,axis,at,a,constant,speed.When,it,reaches,the,origin,the,force,F1=5.0N,at,37,deg,above,the,+x,axis,F2,=2.5N,in,the,+x,direction,F3=,3,5N,at,45,deg,below,the,neg,x,axis,and,F4,=,1.5N,in,the,neg,y,direction,are,applied,to,it,(a)Will,the,object,...
January 19, 2008

physics
The,net,force,on,an,object,is,zero.Can,you,conclude,that,the,object,is,at,rest?Explain
January 19, 2008

physics
If,an,object,is,at,rest,there,must,be,no,force,acting,on,it.Is,this,statement,correct?,Explain!
January 19, 2008

physics
In,the,ideal,apparatus,m1=2.0kg,What,is,m2,if,both,mass,are,at,rest?,How,about,if,both,masses,are,moving,at,constant,velocity?,angle,is,37,deg,and,ther,is,gravity
January 19, 2008

physics
What.is.the.weight.of.a.150.lb.person.in.newtons?.what.is.his.mass.in.kilograms?
January 19, 2008

physics
In an emergency stop to avoid an accident,a shoulderstrap seat belt holds a 60-kg passenger firmly in place. If the car were initally traveling at 90 km/h and came to a stop in 5.5s along a straight, level road, what was the average force applied to the passenger by the ...
January 17, 2008

physics
in a collage home coming competion 16 students lift a sports car. While holding the car off the ground, each student exerts an upward force of 400N. (a) What is the mass of the car in kilograms? (b) what is the weight in pounds?
January 17, 2008

physics
a 1.5-kg object moves up the y-axis at a constant speed. When it reaches the origin,the forces F1 =5.0 N at 37 deg above the the + x-axis, F2 = 2.5 N in the +x-direction, F3 = 3.5 N at 45 deg below the -x-axis, and F4 = 1.5 N in the -y direction are applied to it(a) Will the ...
January 17, 2008

Science
What happens if you submit a sedimentary rock to intense heat and pressure?
January 13, 2008

science
Dear Ms. Sue, I just wanted to know the real answer to what is the meaning or definition of limited. Its not that I don't know it, it is just that I wanted to know the real meaning or definition. Thanks a lot, Melissa B.
January 7, 2008

physics
a spring loaded "cannon" on a wheeled car fires a metal ball vertically. the car is given a push and set in motion horizontally with a constant velocity. A pin is pulled with a string to launch the ball, which travels upward and then falls back into the moving cannon...
January 1, 2008

physics
an astronaut on the moon fires a projectile from a launcher on a level surface so as to get the maximum range. If the launcher gives the projectile a muzzle velocity of 25 m/s what is the range of the projectile?
January 1, 2008

physics
a ball rolls horizontally with a speed of 7.6 m/s off the edge of a tall platform. if the ball lands 8.7 m from the point on the ground directly below the edge of the platform, what is the height of the platform?
January 1, 2008

physics
a boat that travels at a speed of 6.75 m/s in still water is to go directly across a river and back . the current flows at 0.50 m/s (a) at what angle(s) must the boat be steered. (b)How long does it take to make a round trip? (assume that the boats speed is constant at all ...
January 1, 2008

physics
a block weighing 50 N rests on an inclined plane. its weight is a force directed vertically downward, a37 degree angel find the componants of the force parallel to the surface of the plane and perpendicular to it
January 1, 2008

physics
two force vectors f1=(3.0N)x- (3.0N)y and f2= (-6.0N)x + (4.5N)y are applied to a partical . what third force f3 would make make the net or resultant force on the partical zero?
January 1, 2008

physics
a small plane takes off at a constant velocity of 50 km/h of 37 degrees. at 3.00 s (a) how high is the plane above the groundand (b)what horizontal distance has the plane travelad from the liftoff point?
January 1, 2008

physics
a student strolls diagnally across a level rectangular campus plaza, covering the 50 m distance in 1.0 min (a) if the diagonal route makes a 37 degree angle with the long side of the plaza, what would be the distance if the student had walked halfway around the outside of the ...
January 1, 2008

physics
a golf ball is hit with an initial speed of 35 m/s at an angle less than 45 degress above the horizontial (a) the horizontial velocity componant is (1)greater than (2)equal to or (3) less than the vertical velocity componant. Why? (b)If the ball is hit at an angle of 37 ...
January 1, 2008

social studies (civics)
My friend and I Danielle need help with our social studies homework from school. May you please help us?
December 18, 2007

French
How do you invert the following into a question? Elle dine a huit heures.
December 13, 2007

IB Biology
We are currently learning about innate & learned behaviors. An experiment was done where mallard, pintail & teal ducks were crossbred. These ducks live in the same habitat and could interbreed, but rarely do due to different courtship displays. When they were crossbred, the ...
December 9, 2007

customary units
1/2 gal=_______ qt
November 29, 2007

Latin
I have to translate the following sentence into English: Familia nostra amicītiam servōrum nostrōrum cūrā et grātiā semper augēbit et servābit. So far, this is what I've got: Our family will always increase and save the ...
November 5, 2007

math
2y^2+15y+7
October 29, 2007

Overweight/Normal-weight
Compared to overweight people, normal-weight people are ___ likely to engage in eating binges, and ___ likely to experience emotional problems. a. less...more b. less...less c. more...less d. about equally...about equally i chose answer B. because if they were more likely to ...
October 23, 2007

days of the week
Maybe T is Tuesday, and R is Thursday - so TR is Tuesday + Thursday, i dunno but that is what i think
October 23, 2007

insulin-food intake
Through which mechanism does insulin affect food intake? a. it enables the intestines to digest certain types of protein that they would not otherwise be able to digest b. it increases the percentage of each meal that is stored as fats c. it increases the sensitivity of the ...
October 23, 2007

Overjustification Effect
A fifth grader has just learned how to do some simple programming on her dad's computer. Now, her class at school is learning programming and she gets gold stars for doing well. If the overjustification effect occurs, what is likely to happen this summer when she no longer...
October 23, 2007

Psychology
Drive theories disagree with incentive theories of motivation with regard to how they answer the following question: a. Are all motivations equally strong or do some take priority over others? b. Are the motivations of humands fundamentally similar to or different from the ...
October 23, 2007

PSYCHOLOGY
The energy theory of Lorenz and drive theory agree in assuming that motivation is based on a. factors inside the organism b. changes in stimuli in the outside world c. frustrations during early childhood d. sensation-seeking I chose answer A because we try to reduce our needs ...
October 23, 2007

vocab
Dr. Connors rose to eminence as a surgeon.
October 23, 2007

math
divide by .50
October 22, 2007

Photography
Presents - Jesus in the manger - birthstones - parties - pictures of zodiac symbols (crab=cancer=june/july) candy - party hats - Piñata - clown - fun
October 22, 2007

Insulin Levels/Appetite
Consistantly low levels of insulin will produce ___ appetite; consistently high levels of insulin will produce ___ appetite. a. increased...decreased b. decreased...increased c. decreased...decreased d. increased...increased I chose A. but i have NO CLUE...my book was hard to ...
October 22, 2007

insulin-food intake
Through which mechanism does insulin affect food intake? a. it enables the intestines to digest certain types of protein that they would not otherwise be able to digest b. it increases the percentage of each meal that is stored as fats c. it increases the sensitivity of the ...
October 22, 2007

ratio and propation
N = 13
October 22, 2007

Science
Summer is warmer than winter (in each hemisphere) because the Sun's rays hit the Earth at a more direct angle during summer than during winter and also because the days are much longer than the nights during the summer. During the winter, the Sun's rays hit the Earth ...
October 22, 2007

Algebra
Anything to the 0 power is 1. And somehow my final answer was xz^3 / 9^-2y^-2 but i really could be wrong, hopefully someone else can help u with this one cause im not positive!
October 22, 2007

Algebra
Thats right! :)
October 22, 2007

Health
wellness n. The condition of good physical and mental health, especially when maintained by proper diet, exercise, and habits.
October 22, 2007

Health
mental health NOUN: A state of emotional and psychological well-being in which an individual is able to use his or her cognitive and emotional capabilities, function in society, and meet the ordinary demands of everyday life. A branch of medicine that deals with the ...
October 22, 2007

insulin - food intake
Through which mechanism does insulin affect food intake? a. it enables the intestines to digest certain types of protein that they would not otherwise be able to digest b. it increases the percentage of each meal that is stored as fats c. it increases the sensitivity of the ...
October 22, 2007

Obesity
Thanks so much! :)
October 22, 2007

Obesity
Which of the following is likely to contribute to a person being obese? a. decreased portions of food b. expending more energy than normal-weight people c. damage to the set point d. damage to the arcuate nucleus in the hypothalamus? i know that if you damage the hypothalamus ...
October 22, 2007

Delay of Gratification
Which of the following illustrates the concept of delay of gratification? a. preferring $500 now rather than $1,000 dollars one year from now b. preferring $1,000 one year from now rather than $500 now c. preferring a 1-in-1,000 chance at $10,000 rather than $10 for certain d...
October 22, 2007

Psychology-JetLag
Ok! Thank you SO much!!!
October 18, 2007

Psychology-JetLag
After staying awake late many nights, Glorida has become accustomed to going to sleep late and awakening late. Now she tries to shift going to bed earlier and waking up earlier. This shift is similar to difficulties people face when they travel a. north b. south c. east d. ...
October 18, 2007

Psychology-24Hour Cycle
Our tendency to feel wakeful and sleepy on a 24-hour basis depends mainly on a. a cycle generated by a mechanism in the brain b. our perception of environmental stimuli such as heat and light c. a cycle generated by hormone-producing organs such as the adrenal gland d. wear ...
October 18, 2007

psychology-Libet Study
In the Libet et al. study (1983) that asked participants to flex their wrist and record when they decided to flex it, a. people were not very accurate in determining when they actually moved their wrist b. the results suggested that the brain started to flex the wrist before ...
October 18, 2007

psych-Awake/Asleep
3. Our tendency to feel wakeful and sleepy on a 24-hour basis depends mainly on a. A cycle generated by a mechanism in the brain b. Our perception of environmental stimuli such as heat and light c. A cycle generated by hormone-producing organs such as the adrenal gland d. Wear...
October 18, 2007

Psych- Sleep Deprivation
Sleep deprivation for a period of several days results in a. dizziness, slurred speech, and hallucinations in everyone. b. a loss of skill, such as that needed to play arcade games c. a total loss of ability to concentratel; even the simplest taks cannot be completed d. ...
October 17, 2007

IQ Test ?
A group of people took a new IQ test twice. Nearly all of those who did well the first time they took it also did well the second time. Nearly all those who did poorly the first time did poorly again the second time. Therefore, this test has __ reliability and __ validity. a. ...
October 17, 2007

Validity/Reliability
I have a test that accurately predicts who will learn statistics quickly. My test has a. predictive validity but not reliability b. content validity but not predictive ability c. predictive validity and reliability d. neither validity nor reliability i chose answer C because ...
October 17, 2007

Psych- FLYNN EFFECT
The Flynn effect is an example that shows a difference in IQ among : a. ages b. genders c. cohorts d. cultures Ok, i tried this one, and i thought the answer was "generations"...so i am confused as to what the answer is.
October 17, 2007

home economics
HI I NEED TO FILL IN THE BLANKS..THEY ARE ALL TYPES OF KITCHEN KNIVES R.......B......K.....(POSSIBLY BUTTER KNIFE?) F...C....K...... IS THERE SOMETHING CALLED A PALLET KNIFE? HOPE YOU CAN HELP (THE DOTS DO NOT REPRESENT LETTERS!)
October 11, 2007

chemistry
With the hydro carbon azulene it has a very large dipole moment and is an intense midnight blue color. Why is it such a deep blue and have a large dipole?
October 8, 2007

Calculus
(1 - x)^4 * (2x - 1)^5 its a derivative how can i solve this?
October 4, 2007

algebra
yes, solve for c
October 2, 2007

algebra
1/2=2/5c-3, I do not get fractions
October 2, 2007

algebra
How do I solve -1/5t-2=4
October 2, 2007

biology
We recently performed a yeast fermentation lab in class to determine the effects of different sugars (sucrose, lactose and dextrose) on the rate of fermentation. I am writing up my lab report, however I am having some difficulties. If sucrose and lactose have the same ...
September 29, 2007

science
theodor Schwann work alone to develop the cell theory?
September 24, 2007

science
what did Anton ban Leeuwenhoek first look at with his microscope and what did he name it?
September 24, 2007

science
what did robert Hooke first look at with his microscope? What name did he give what he saw?
September 24, 2007

math-story question
For a cone, the formula r = 3V divided by rh( all enclosed in square root symbol) describes the relationship between the radius r of the base, the volume V, and the height h. Solve the formula for V.
September 22, 2007

math radicals
5 square root 2 divided by square root 10+1
September 22, 2007

math
I think it is x2-4x-21 (x-7)(x+3)
September 22, 2007

algebra 2
its a peicewise you have to graph it and stuff
September 20, 2007

algebra 2
piecewise function : g(x)=/x/ +3 please help me solve this
September 20, 2007

Science
What mammal mother has babies nearly 1/3 her own size?
September 4, 2007

Algebra
thankyou
September 4, 2007

Algebra
15m-12-12m=16 what's the answer
September 4, 2007

Social Studies
If there is collision between the president and Congress, can Congress restrain the president in foreign policy making? It's very difficult, but sometimes Congress can influence the president on foreign policy. This website goes into a lot of details about the ways the ...
August 17, 2007

english
I need some help writing a paragraph about the literary devices in the book Twisted Summer. This is what I have so far. Twisted Summer is a fictional murder mystery. The setting was at Crystal Lake, where everything took place. There was definitely irony in this book. Cici is ...
August 4, 2007

english
Describe the literay elements used in the book Twisted Summer by Willo Davis Roberts? We'll be glad to critique your answer if you post it here. You may get some ideas about the literary elements from the reviews in this site. http://www.amazon.com/Twisted-Summer-Willo-...
August 2, 2007

Senior Paper
I am writing a Senior Paper about the poetry works of W.B. Yeats, a Modernist poet I have found out. But I was wondering if my thesis would work or if it is too soft and not on the line of a thesis. W.B. Yeats like most of the Modernistic poets in his time has changed poetry ...
July 6, 2007

English Thesis
I am usnure about my restated Thesis for my conclusion paragraph. But here is my first thesis 1. King Duncan, King Hamlet, Malcolm and Fortinbras are all minor characters who play an essential role in each tragedy; the kings are both murdered and the young men are both ...
June 28, 2007

English IV-writeacher
Thank you for your help! I even was able to use essential in my essay a couple of times =D! You're very welcome. Go get A's!!! =)
June 28, 2007

English IV Thesis
King Duncan, King Hamlet, Malcolm and Fortinbras are all minor characters who play a big role in each tragedy, the kings are both murdered and the young men are both fighting for their father’s lands in the end. Please check my thesis!!! "King Duncan, King Hamlet, ...
June 28, 2007

health
teenagers and what else of both sexes seem to be smonking more? Is this a question? What is smonking? Young adults, who were teens in the early 90's and started smoking then Smonking or smoking? They all have different meanings.
May 28, 2007

Science
What are the comparisons and contrast of heat capacity and specific heat capacity? http://www.google.com/search?hl=en&ie=UTF-8&defl=en&q=define:heat+capacity&sa=X&oi=glossary_definition&ct=title http://www.google.com/search?hl=en&ie=UTF-8&defl=en&q=define:specific+heat+...
May 16, 2007

Math
Write as a single logarithm. Thank-you. 3(4 log t^2) Would it be logt^8 or are you not allowed to do that? And logy-4(logr+2logt) in the first one, what happened to the 3? my answer is log t^24 in the second... =logy - 4(logr + logt^2) =logy - 4log rt^2 = logy - log r^4t^8 =...
April 16, 2007

Please help-behavior
Braking your car after you observe a child's ball rolling into the street from between parked vehicles is instinctive requires a conscious decision is a reflex is instinctice and requires a conscious decision. (my choice) am I right here? The braking itself (pushing the ...
April 15, 2007

evolutionary standpoint
speaking from an evolutionary standpoint, would you say mitosis preceded meiosis or meiosis preceded mitosis or synapse preceded cell division or cell division preceded synapse.
April 14, 2007

math
Can't seem to get this problem ã6-x - ãx-2 = 2 I am unaccustomed to the symbols you are using. What does  mean? Does ã6 mean ã^6 ?
March 16, 2007

IB Biology/Biology
Web feet is a sex linked characteristic in Dingbats. Female Dingbats are XX and males XY. A webbed male is crossed with a homozygous normal female and the baby Dingbat is a female with normal feet. Deduce whether the web allele is dominant or recessive. If their next baby is a...
February 16, 2007

sience
How does a tornadoe form? This site has a great explanation and diagrams. http://www.weatherwizkids.com/tornado.htm
February 4, 2007

pre-calc
Quest: show that i (imaginary) is a zero of f (x)= x^3+ (3-i)x^2 - 4ix -1 Plug in i for x and add up the terms. You should get zero. Remember that i^2 = -1
January 21, 2007

Iron Ions
Does anyone have the tests for iron(II) and iron(III) ions lab done? If you want to know something about Fe(II) and Fe(III) please post a new question. sadddddddddd I love to spelunk with my friends. It is such a hot rush! I also like to experiment with different spelunk ...
January 21, 2007

History
How can individuals promote tolerance and reduce prejudice in their towns and cities? One has to practice what one preaches is the first action. Secondly, one has to love and show love to those not like us. Respect and dignity are powerful forces. Thirdly, a realization that ...
January 5, 2007

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