# Posts by Lewis

Total # Posts: 94

physics
I need a answer about these? Calculate the net electric force exerted on a particle of charge -4.0mc due to the influence of charge +5.0mc and -3.0mc at distance of 20cm & 80cm, 50cm from it?

math!
You have 48 minutes to take an exam of 21 questions. After you finish the first 10 questions, you realize you must answer the remaining questions twice as fast to finish the exam. How many questions per minute were you answering? Also, how many questions per minute must you ...

Algebra 2
One hundred liters of a 57.84% acid solution is obtained by mixing a 75% solution with a 42% solution. How many liters of each must be used to obtain the desired mixture? A) 40 liters of 75% acid and 60 liters of 42% acid B) 53 liters of 75% acid and 47 liters of 42% acid C) ...

Algebra 2
One hundred liters of a 57.84% acid solution is obtained by mixing a 75% solution with a 42% solution. How many liters of each must be used to obtain the desired mixture? A) 40 liters of 75% acid and 60 liters of 42% acid B) 53 liters of 75% acid and 47 liters of 42% acid C) ...

Algebra 2
You have 48 minutes to take an exam of 21 questions. After you finish the first 10 questions, you realize you must answer the remaining questions twice as fast to finish the exam. How many questions per minute were you answering?

Physics
A 120-V rms voltage at 60.0 Hz is applied across an inductor, capacitor and a 100-Ω resistor in series. If the maximum value of the current in this circuit is 1.60 A, what is the rms value of the current in this circuit?

Maths
Which is better, £3.500, 4 years at 6% simple or compound interest?

Life Orientation
1) Heavy competition among the media organizations 2) Scandals among the administrators, staff, and workers in media organizations. 3) Failures in equipment used by the media to transmit information quickly and accurately. 4) Lower participation of the consumers of the media ...

Zambian Lotto
Zambian lotto passed results 16,28,02,39,05,38,20 please help me with at least four possible predictions for next draw on 16/02/2016

math help trigonometry
Its tan x cos x/sin x=1/sin x cos x

math help trigonometry
Prove the following identity tan x cos x/sin x=1/sin x cos x

Corporate Finance
If PV is \$45,000 and the Average Rate of Inflation is 3% with 4 years until Retirement, what is the FV?

chemistry
I want to boil 25c, 50c, and 75c to 100c but I don't have a thermometer. I did 0c which was 1.42 but I can't do the others.

Biology
What is the relationship between the major body systems; Coordination systems through Homeostasis

calculus
24x^2-10x-21/32^2-18

calculus
(x^2-4x+6)(x-3)^-3

latin
latin rootfor

CS 116 Visual Basic
I am having a problem I need to Rewrite the program so input, processing, and output are each performed by calls to Sub procedures. Private Sub btnCompute_Click(...) Handles btnCompute.Click ‘Information about trees Dim num As Integer = 7

Math help!! for finals
1.)A picture 8 in. by 12 in. is placed in a frame which has a uniform width. if the area of the frame is equal to the area of the picture, find the dimension of the frame 2.)Arman has 1160 annual income from bonds bearing 3% and 5 % interest. then he added 25% more of the 3% ...

Math
1.)A picture 8 in. by 12 in. is placed in a frame which has a uniform width. if the area of the frame is equal to the area of the picture, find the dimension of the frame 2.)Arman has 1160 annual income from bonds bearing 3% and 5 % interest. then he added 25% more of the 3% ...

Hunter school has a kindergarten and grades 1 through 6. there are 2 kindergarten and 2 classes in each grade. If the maximum class size is 25, what is the greatest number of students that could be in the school?

math
prove -x - y = - y - x, for all integers x and y and does part (a) imply that subtraction is commutative

english
In the text box provided below, type the research report according to the guidelines below. You must submit both your first draft and final versions. Remember that an adult must review your first draft and provide constructive criticism. Assignment: A formal outline and a ...

english
What is the simple predicate in the sentences? 1. I ran all the way to your house would it be ran 2. Please help me with my homework would it be homework

Chemistry
Please explain this, I have no idea how to figure this out. What molecule or polyatomic ion has the following features. (a) four bonded atoms, no unshared electrons on the central atom (b) two bonded atoms, no unshared electrons on the central atom (c) two bonded atoms, one ...

Physics
Which doesn't describe motion? mass or position eg. The position of a golf ball standing still on a tee at 7:30 A.M. Sunday morning. or The mass of Voyager as it plunges into a black hole.

Physics
Which of the following is not a good example of uniform circular motion? a) a person riding on a ferris wheel that is turning at a constant rate b) a person taking off on an airplane to fly around the world on a path defined by the equator c) a race car driving at a constant ...

Physics
Which of the following statements about projectile motion is not correct? a)The acceleration is constant and in one direction. b)The only force is gravity. c)In projectile motion, the motion can be broken down into perpendicular components that are interdependent. d)All of ...

Physics
An object is observed for a 5 second interval. During this time, the objects velocity increases from 2 m/s to a final velocity and the object travels 75 m. The acceleration of the object is constant. Given this information, which of the following statements is not correct? a)...

Physics
Whats the difference between uniform acceleration graph and a constant acceleration graph? Both graphs look the same and I can differentiate them...

Physics
Whats the difference between uniform acceleration graph and a constant acceleration graph? Both graphs look the same and I can differentiate them...

Physics
Velocity/instantaneous velocity question? In a demonstration a ball falls directly to the ground. Which of the following statements about this event is not correct? (Assume downward is the positive direction.) a)The average velocity during the first half of the fall is greater...

social studies
there's no map...

math
Can you go into a little bit more detail? How is this really needing help?

math
Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by both their mother and ...

math
Billie wishes to test the hypothesis that overweight individuals tend to eat faster than normal-weight individuals. To test this hypothesis, she has two assistants sit in a McDonald’s restaurant and identify individuals who order the Big Mac special for lunch. The Big ...

math
Steven collected data from 20 college students on their emotional responses to classical music. Students listened to two 30-second segments from “The Collection from the Best of Classical Music.” After listening to a segment, the students rated it on a scale from 1 ...

Forensics, Accounting
confirming inventory

Science
How do you test the properties of an unknown material?

Physics
A technician performs an experiment on a glass slap and finds that the critical angle for total internal reflection at the glass (refractive index n1) air (refractive index n2 = 1) interface is 43 +/- 2 deg. Find n1 and the associated error.

Pre-Cal
Given the function f(x) = 2x^3 + 3x + 1, state the power function that it’s ends will resemble.

maths
44 -90

chemistry
What is the new crystal structure and formular of NaCL + C6H12O6

Religous Studies
Can anyone give me advice on how to compare a synagogue to a place where you feel calm? Thank you

Chemistry
A sample of iron with a mass of 75.66g and an initial temperature of 15.38C gains 10480 Joules. What is the final temperture?

chemistry
Paints and lubricants, only example I could find.

english
It depends! How relevant it is?

Math
I got 13 marbles not too sure but I think: red= 2 blue = 4 green = 6 and yellow = 1

marketing
Thank you, much appreciated

marketing
Thank you so much so things like pricing yeah?

marketing
Name 3 things a marketing department of a firm does?

MPG
94

Science
What are 5 facts about heat?

algebra(Math I)
A triangle's base is 14 inches less than 2 times its height. If h represents the height in inches, and the total area of the triangle is 54, which of the following equations can be used to determine the height? A. 7h-h2=54 B. 2h2-14h=54 C. h2-7h=54 D. 14h-2h2=54

biology
what are the sequences of event hat result in erythroblastosis fetalis

biology
what are the sequences of event hat result in erythroblastosis fetalis

physics
a ball mass 800g is dropped from height of 5m and rebounds to a hight of 3.8m the air resistance is negligible. calculate a. the kinetic energy of the ball just before impact b. the initial rebound speed of the ball c. the energy transferred to the ground during impact

physics
Fx= F1 cos(30) Fx= 10*cos(30) Fx=8.66N

English
   

Art
Can anyone give me any ideas for drawing a picture of an insect using the letters from the word insect? Thanks

math
for an annual fee of \$30 you can join a movie club that will allow you to purchase tickets for \$5.50 each at you local theater. If the theater charges \$8 for movie tickets write an solve an equation to determine how many movie tickets you will have to buy through the movie ...

Religous studies
How can i best explain the problem of evil for my rs homework. Thanks

Religous studies
Im 11 and i need to know how to research the following and be able to understand it myself.I'm finding this hard. 1)Three examples of what believers would say of evidence of God in the world. 2)Describe the problem of evil 3)Describe a christian response to the problem of ...

History
I am 11 and need to design a title page on the dark ages, but can't find a website that is easy to follow and with good illustrations. Any ideas? Thanks

maths
how to solve x for 12(log x)^2-14log(x)+2=0 i don't know how to factor out log and log x^2

History
I have to imagine im a roman soldier and write a letter to rome, any ideas, im 11 Thanks

Science
Can you advise me on how to draw electrical circuits for equipment in my room such as my tv and stereo. Thanks

French
Can anyone give me ideas on how to learn the verb 'avoir' and to know the subject pronouns. Thankd

chemistry
what it the anaylis of heating copper corbonnate

Maths
I have to complete a data sheet for the Chicago Bulls to include Top 5 players,their salaries heights and weights. I also need the last 5 match results and last 5 crowd attendances. I'm struggling to find some of this information. Any ideas? Thanks

History
I need to do a poster about daily life in ancient Rome, im looking for some good illustrations to give me ideas. Can you help?

Religous studies
I have to write my statement of belief in the form of a poem, i am 10 and i'm not really sure what i believe in and am struggling with this. Any ideas? Thanks

drama
What is focus and and why do we focus in drama? I am 10 Thanks

English
I need to write a few sentences on the difference between a conventional novel and a graphic novel. Can anyone help. I'm 10, so in writing i can understand. Thanks

Geography
i was asked to label the features of a river basin

math
which number cann be used in place of the variable in each rational expression a^2-b^2/a-b

Clouds. Water droplets on the side of a glass.

Physics .. critique
Hi, Can anyone please check .... If the values of n and m that have been used to construct the chiral vector equal ( n, m ) = ( 7,3 ). n - m is 7 - 3 = 4 For a given (n,m) nanotube, if n − m is a multiple of 3, then the nanotube is metallic, otherwise the nanotube is a ...

Biology
Researchers working on Alzheimers disease identify a gene which may help treat the condition., but use a shortened version of the gene ..which codes for all necessary amino acids .. can anyone explain how the shortened version may be obtained .. If any could flag the main ...

Biology
Hi HooBoo Many Thanks :-) I now understand .......

Biology
Hi, If a gene for neprilysin contains 80 000 base pairs, and neprilysin contains only 749 amino acids, can anyone explain the significance of the difference between the numbers ? Can anyone suggest a place where I can read more on this topic ? Thanks.....

Genetics
Hi, If a gene for neprilysin contains 80 000 base pairs, and neprilysin contains only 749 amino acids, can anyone explain the significance of the difference between the numbers ? Can anyone suggest a place where I can read more on this topic ? Thanks.....

Astronomy NEOs
Drwls..Thanks

Astronomy NEOs
When Stuart ( 2003) revised the magnitude for spotting NEOs comets, over 1KM etc from H =18 to H 17.75 ... did this increase , decrease, or did the population of NEOs stay the same. and why ??? Me personally ..I think the number of NEOs over 1 KM has decreased ..as it is now ...

english
She's meeting fred at 3 o'clock I think the name of the structure is. Future continuous Could you tell me if it's right. Also could you tell me if the form is correct. She's meeting Fred at 3 o'clock Subjet+ verb-ing +future continuous

Thank you have a good weekend !!

Thank you ..

Hi, Can anyone offer any advice on solving the following, motion of two stage rocket is stated by it height y in metres above the ground since t seconds since launch. Flies vertically Ist stage burns for 5 seconds and cuts out. 2nd stage rocket is under gravity alone. modelled...

VERBS .name of structure
I AM PLAYING TENNIS WITH MY BROTHER ON SUNDAY

Algebra 1
solve for x and check you result -4(2x-3)=-8+5

math
if 1 gallon of water weighs 8.34 pounds, how much does 3.75 gal weigh

literacy
Can you help me in 'What are the features of an explanation' "explanation - a statement that makes something understandable by describing the relevant structure or operation or circumstances" Structure means how the thing is put together; operation means how ...

science
how much did the first microscope magnify I think it was 40x lewis is your last name smith lewis is your last name smith

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