physics( i have no idea how to go about gettign th

163,123 results, page 94

physics

What is the force of gravity between two spheres that have a mass of m1 =13 kg, m2 = 49 kg and are separated by 35 m?

PHYSICS

When you have more pulleys does the mechanical advantage and efficiency increase or decrease?

physics

if a 1 kg rock is thrown at a speed of 20m/s, how much kinetic energy does it have?

Science: Physics

A circle graph has labeled segments of 5.7%, 21%, 13, and 6%. What % does the unlabeled segment have?

PHYSICS

Two vectors and have magnitude A = 2.90 and B= 3.00. Their vector product is A X B= -4.91 + 2.08. What is the angle between A and B?

science

hello! I need good sites that can help me with my physics class! do you have any ideas??

Physics

An object has a mass of 8.99KG and is moving at 2.55 m/s. How much kinetic energy does it have ?

physics

Two vectors and have magnitude = 3.08 and = 3.08. Their vector product is = -5.07 + 2.00 . What is the angle between and

Physics

Would it have been possible to make DNA a binary code?

Physics

I just have a question....How to know if the volt is -ve or not? and How to know if a charge has deficit or excess electrons ?

Physics question

Does the crest of a wave usually have a larger amplitude than the trough?

physics

A plane cruising at 247 m/s accelerates at 28 m/s 2 for 8.7 s.How far will it have traveled in that time?

Physics

Would a feather have more air resistance than a lump of lead?

physics

At what angle with the north would he have to walk? Answer in units of ◦ .

physics

How much kinetic energy does a 0.03 kg bullet traveling at a speed of 300 m/s have?

English-Social Studies

Can anyone recommend a good book about the Middle east? It can be either fiction or nonfiction. We have to read it and report on it for both English and Social Studies. Thanks.

french

I have questions about pronominal verbs, let say "se arreter". Je m'arrete means I stop right? But does j'arrete also mean I stop? So why would you use pronominal?

religion

Hello I need some help I have a paper due and I need to ask a pastor a few questions about religion this is due friday and i'm trying to get it done tonight is there is anyone who can help please do thank you so much.

Science

What is unique about the photoperiod at the two equinoxes? At the two equinoxes, the photoperiod is equal, it stays the same for both dates?????????? Please help me with this one, I don't think I have it right.

math/estimating products

an arena seats 7,893 people.The circus is in town and all of the tickets have been sold. If the circus has 4 performances, about how many tickets were sold?

Geography

I have to write a three paragraph essay on the causes of terrorism. One paragraph for each cause. All I am helping is finding 3 good causes and a little information about how they cause terrorism.

statistics

the ages of the members of a gym have a mean of 44 years and a standard deviation of 12 years. what can you conclude from Chebyshev's theorem about the percentage of gym members aged between 26 and 62?

English

Match a sentence from Group A with one from group B.I want to be sure there all correct, thanks. Group A 1.At O C water freezes. 2.I've been to several countries. 3.I've been working here for 10 years. 4.She was walking down the road. 5.He'll be working late for the next 2 ...

Grammar ( Need help Ms. Sue )

Directions: Read each passage and ask yourself, ''What is the author doing in this paragraph?'' Write each anser in the summary box and then think of an appropriate title for the passage based on the main idea of the passage. 1 A penny for your thoughts? If it's a 1943 copper ...

Math

An estimate of the mass of a new, unsharpened pencil is about __________. I think it's about 35 grams? Fill in the blanks. A good reference to use when estimating the mass of a small object is _____. It has a mass of about_________. Thank you!

Ms Sue geography

sorry to ask again for help but i need to include a graph in my report about the turkish earthquake but i can`t think what graph to do. it needs to show relevant information i was going to do a graph about how many people died but i don`t know if that would be ok. thanks for ...

English

Can you check for the last time if everything is correct? Thank you very much in advance!!! The poem is narrated by the mirror and has a balanced structure with two verses mirroring each other. This emphasizes the idea of the first stanza, which describes the mirror, ...

Communication

Over the past 50 years or so we experienced great changes. From equal rights, equal pay, civil rights, how we talk to each other, treat each other, now diversity training and of course all of this lead to first Black President of the United States. A healthy person's beliefs ...

To Bobpursley

Thank you very much for your response. I'm a bit concerened about my career as mour local universities don't conduct Nuclear Engineering courses.So even if I want to study beyond Bachelor's Level,I woyld have to study abroad,should find Finacial Aid and all.And of course ir ...

Re: social studys

Im the girl qho just asked about my 2-3 page essay. Its based on this "explain and describe how geographers use thier tools to interpret geographic questions. Remember, i'm in 7th grade. (ms.sue) my teacher said that its based on out notes and its bacically about technology ...

Programming

Hi. I am taking a computer programming class (C++). I need some help on some programs. I tried going to my teacher - he was of no help and there are no tutors. I have a lot of code, but I'm having problems. I looked online for help, but they're using different methods that I ...

english

I am trying to write a narrative satire about how my mom always makes me do chores that I don't want to do because they don't make any sense to me. For example; making the bed-I am just going to get in it in a few hours-whats the point? I can't think of anything else to write ...

calculus

find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line. sketch the region and a typical disk or washer. y^2=x, x=2y; about the y-axis i am confused because i do not know how to set it up because one is Y and the other ...

Language art

Which of the following sentence contains an action verb A. My sister lost her computer yesterday B. Is disappearance seems strange to me C. Martha feel sad about the last computer D. She becomes angry about it every few minutes

Algebra 1

I am not good at these kinds of problems, so if anyone could show me how to do this, it would be great. Currently, there are about 270 million people in the U.S. The EPA set a goal of 35% of solid waste recylced by the year 2009. The estimate is that by then, the average ...

Physics of Modern Technology

1) In a conventional explosion, when each molecule of high explosive chemically reacts, it produces about 4 x 10-18 J (joules) of energy. If each molecule of high explosive weighs as much as a single uranium 235 atom, and each uranium atom releases about 4 x 10-11 J in a ...

Physics of Modern Technology

1) In a conventional explosion, when each molecule of high explosive chemically reacts, it produces about 4 x 10-18 J (joules) of energy. If each molecule of high explosive weighs as much as a single uranium 235 atom, and each uranium atom releases about 4 x 10-11 J in a ...

physics

A horizontal disc rotating freely about a vertical axis makes 90 revolutions per minute reduces to 60,then find the moment of inertia of the disc? 1. mr2 2. 3/2mr2 3. 2mr2 4. 3mr2 (the last ‘2’in each option should be considered as square, please)

physics

how would i go about solving this problem? what formula shoud i use? can you please show me in steps how to do this, thanks a lot: The critical angle of refraction for calcite is 68.4degrees when it forms a boundary with water. Use this information to determine the speed of ...

Physics

A pulley with a rotational interia of 4.4*10^-3 kg m^2 about its axle and a radius of 6 cm is acted on by a force applied tangentially at its rim. The force magnitude varies in time as F=0.32t + 0.27t^2 where F is in newtons if t is given in seconds. The pulley is initially at...

Physics (Difficult)

A uniform rectangular bar with cross-section 66 mm x 54 mm and of length 1.7 m has mass 16kg. It pivots about an axis prependicular to the wider face. The axis is equidistant from the edges and 170 mm from one end. What is the relevant second moment of mass?

Physics

A thin rectangular piece of aluminum (density is 2700 kg/m3) is designed to pivot about a pin that smoothly slides into a small hole. Where should the hole be drilled in order to minimize the period of harmonic motion? The aluminum has dimensions of 2 cm x 40 cm x 0.1 cm

Physics

Francesca dangles her watch from a thin piece of string while the jetliner she is in accelerates for takeoff, which takes about 11 s . Tap image to zoom . Part A Estimate the takeoff speed of the aircraft if the string makes an angle of 25∘ with respect to the vertical.

English

Here is the second part of the email. 1) We plan to involve a group of 18/20 students in year 11 who are high-achievers and are willing to devote sufficient time and energy to the project. 2) By the way, is the French school or your school acting as a coordinator of the ...

business communication

please help me to revise this paragraph I’m fed up with the mistakes that our current accounting firm makes. I run a small construction company, and I don’t have time to double-check every bookkeeping entry and call the accountants a dozen times when they won’t return my...

King Artur reposted with my answer

Why has the story of King Arthur endured for as long as it has? Why does the story appeal to such a wide variety of people? Would King Arthur and the Knights of the Round Table be considered heroes today? For Further Reading King Arthur - GuruBlue, Friday, January 11, 2008 at ...

Algebra--Help needed!

Does anyone at least slightly understand direct and inverse variation? I get the basic idea, but I'm still a little confused, especially with inverse variation. What I'm having more trouble with is conversion using direct and inverse variation. Today, my teacher kept talking ...

math

suppose you have a pipe with circumference of 8 cm and length equal 3 cm and that 10 turn of a wire are wrapped about the pipe. what is the length of the wire

english

need help asap i have to write a allegory story how do i do so what is a allegory need an example plez help do some1 no what i can write about thanks

commercial

in vocabulary class, we have 2 make a comercial about vocabulary. Please help. I wan't 2 make this commercial perfect so my group can get A's.

math

i have a math problem i cant figure out.it is about input and out put algebraic expression. INPUT P-24 18 14 12 08 OUTPUT N-10 07 05 04 02

math

i have a math problem i cant figure out.it is about input and out put algebraic expression. INPUT P-24 18 14 12 08 OUTPUT N-10 07 05 04 02

math

i have a math problem i cant figure out.it is about input and out put algebraic expression. INPUT P-24 18 14 12 08 OUTPUT N-10 07 05 04 02

physics

Canadian snowbirds usually follow the I-15 at a speed of about 120 kilometers per hour. Canadian geese, on the other hand, migrate approximately along a north-south direction for well over a thousand kilometers in some cases, traveling at speeds up to about 100 kilometers per ...

9th grade

Hi, am trying to find out if my son did a collage right ? It is due tommorrow- it is a who i am collage which is suppose to show pictures of his personality that people know about him and things people do not know about him?

Math - Solving Graphically

1. 8 + 7x =2x² I used my calculator to graph this and got x is about 4.41 and -.904 2. 1/3x² - 15 = 0 Again, I graphed on my calculator and got x is about 6.70 and -6.70 Are these answers accurate and is there another way to solve?

algebra

A street vendor sells about 20 shirts each day when she charges $8 per shirt. If she decreases the price by $2, she sells about 10 more shirtseach day. How can she maximize daily revenue?

U.S history

Choose two changes that came about from the Civil war and for EACH ONE CHOSEN Explain how the Civil War brought about the change and Evaluate its effect on American Society

To Ramon - English

I removed your latest post because it included too much personal information about you. Do not post the name of your school or your last name. Please see my questions about your question below.

Geometry

On September 3, 1970 a hailstone with diameter 5.6in fell at Coffeyville, Kansas. It weighed about 0.018Ib/in^3 compared to the normal 0.033Ib/in^3 for ice. About how heavy was this Kansas hailstone?

7th grade Math/Science

Can you help me with this science question: from sea level, the biosphere goes up about 9km and down about 19km. What is the thickness of the biosphere in meters? (there wasn't a formula in the workbook). Thanks

Algebra 2

Use trigonometric identities to solve each equation for the given domain. sin 2θ = -cos θ for 0 ≤ θ < 2π *Anyone who has any idea which identity to use is welcome to help

Economics

I think I get this but could use some guidance to make sure, I am having problems with 2e). 1)In an article about the financial problems of USA Today, Newsweek, reported that the paper was losing about $20 million a year. A Wall Street analyst said that the paper should raise ...

chem+Acid-Base Reactions

Hey..can you check this for me. It has to do with Predicting Acid-Base Reactions. So here it is: I have to: Predict the most likely acid base reaction(s) that occur. For each reaction, state if the reaction is quantitative, or, if not, state whether products or reactants are ...

Poetry

Why are the following words significant to the poem, "The Love Song of J. Alfred Prufrock"? Etherized Tedious Insidious Formulated Malingers Obtuse Morning Coat Digress If I knew what the answer is or any idea on how to answer this question, I wouldn't be asking this site...

English- Sentence Structure

There are many potential elements that need to be considered before the main root to war being beneficial is found. I wrote this sentence is there another way to re-word it so it can sound stronger (using the same basic idea that I had)

FRUSTRATIONS OF PROGRESS;CHAOSAND COMPLEXITY

One of the greatest lasting social changes of the development of mass armies was the A. breakup of aristocracies. B. creation of national identities. C. complete militarization of European society. D. development of the idea of "total war."

English

1. Organizing and recalling main ideas is known as: A. a supporting idea B. analyzing C. summarizing D. a subtopic I think it's C. 2. A short composition on a single subject, usually presenting the personal view of the author is a/an: A. novel B. short story C. expository D. ...

History

General T. Sherman explains that his aim was to relentlessly pursue the confederacy and and make them fear and dread him and the union army. Which wartime strategy is represented by this idea? naval blockade martial law total war defensive war Help

Social Studys

This excerpt is from a citizen in england in response to the colonial outrage toward the stamp act. what central arguement of the american colonists against the stamp act is not understood by the writer? that trade was heavily restricted due to taxes, which made it difficult ...

Engines

How do i find total displacement in in^3/min if i have the bore and stroke and and rpm and number of cylinder. i can calculate piston and engine displacement and compression ratios but just not sure about TOTAL displacement and the rpms?

english 12 grade

Hello, have anyone ever read a story called "The Affair of The Twisted Scarf" by Rex Stout?? It is a long story, and English is my second language and I am not sure what the story is about. Can you give me an overlook of it?

Math

I have a couple questions about the sums of geometric series. One. So the formula for the sum is t(n)=t(1)[(r^n)-1] But if my series starts at t(0), can I change the formula to t(n)=t(0)[(r^n)-1] ? Two. If, in the series, there is a different pattern in the numerator than in ...

English

Just a question. Thank you. I want to be sure that the sentence: "Don't talk about me as ancient" is wrong. It should have been formulated this way "don't talk to me as if I were ancient" which, however, is different from: "don't refer to me as ancient" (is the last one ...

Chemistry

E=hv E=energy h= Planck's constant =6.626 x 10^-34 v= frequency 1. What is the energy of light having a frequency of 2.28 x 10^12? ( I do have an answer for this but I'm not so sure about it.) 2.What is the energy of light with a wavelength of 2.18 x 10^-5? 3. A photon of ...

Psychology

The medical benefits of marijuana versus the danger of its use in society has neen a dispute for decades. I have to write a 350 word essay about the debate and compare and contrast the negative effects of marijuana and the positive effects. Any help?

Finance

Hello, I have a research about September 11 2001 crash so i need to know the action taken by : Market management in the stock exchange I don't understand what is meant by market management can anyone tell me or give me example i would be thankful Thanks Karim

chemistry grade 11

i have a question about finding the concentration of a substance then changing it to a percent. i check over my notes and i can't find it. the concentration of an unkown substance is 0.831 M and the two given substances are 4% and 5.5% so i do not know howto calculate which ...

reading

the story's theme is huge jobs require huge effort, its lots of fun to be a lumberjack, large people have good hearts, or logging can be dangerous i put the 3rd one (its about the story Paul Bunyan).

english

i need to write a historical narrative for school. it has to have dialogue and be in any persons viewpoint from the great depression and world war 2. it has to revolve around a specific climax or such. so i need some help coming up what to write about! thanks much.

us history

is this a good thesis statement for a paper i have to write about changes in the us from 1776 to 1870? "while we are still not a perfect country, political,social and economical changes are shaping up out country" is it ok or is there anything i can do to make it better?

Math

THC, the active ingredient in marijuana, is said to have a half-life of about one day. If someone ingests 3 grams of THC, write an equation to represent M, the amount of marijuana in his system when he tested d days later.

ethics

need help on this my answer Epictetus believes that the most important aspect of piety towards the Gods is:D not sure if im correct Answer a. To obey them. b. To have true beliefs about them. c. To accept all that occurs at their hands. d. All of the above.

7th grade science final

review Question -- 3 simple steps for DNA duplication I have found so many answers but cant get a concise one. 1. separation - of 2 dna strands unzips 2. duplicates 3. zips back up and then a simple sentence about each

english

benign,blase,comprise,condescend,facade,glib,haughty,libel,pseudonym and redundant. When a famous actress arrived in town to work on a movie, an editor asked me to interview her. Because this was my first interview assignment, I felt far from_______(glib) about it. Instead, I ...

english PLEASE HEP

Connect each pair of senences by including a traditional word or phrase and any necessary punctuation. Sentences: 1.Discoveries in neuroscience have yielded many benefit.Researchers have developed medication for schizophrenia and Tourette's syndrome. 2. The average human brain...

English

Were all the alternatives possible? Can you please tell me if everthing was OK? Thank you for your invaluable help. 1) In the summer I go on boat trips with my mum to see the whales and the dolphins. I keep a diary in which I include information about them. 2)I hope I'll be ...

physics

A boy yells towards a clikff and hears his echo 3.15 s later. If the air temperature is 12 degrees C, how far away is the cliff? The distance the sound travels is twice distance. 2d=velocitysound*time Now for velocitysound at 12C... You have a formula for that, I have long ...

Physics

A 3 kg ball is dropped from the top of a cliff. At the same time, a 9 kg ball is fired straight down from the top of the cliff. Ignoring air resistance, what can we say about their accelerations after being released?

physics

A high-speed sander has a disk 8.00 cm in radius that rotates about its axis at a constant rate of 1100 revolutions per minute. Determine the angular speed of the disk in radians per second.

Physics

An outfielder throws a 0.145 kg baseball to the shortstop with a speed of 30 m/s at an angle of 20 degrees above the horizontal. How far does the ball travel? (Assume the shortstop catches it at about the same height that the outfielder throws it.)

physics

Due to continental drift, the North American and European continents are drifting apart at an average speed of about 3 cm per year. At this speed, how long (in years) will it take for them to drift apart by another 658.1 m?

physics

Using sidereal navigation, a pilot flies due south for one hour then due north one hour and lands about 180 miles west of where he started. At what point on Earth is he?

Physics

A 4900kg cable car goes 350m up a hill inclined 14∘ above the horizontal. What can your learn about the work done by the cable to move car up the hill? Answer quantitatively. Ignore friction.

FINANCE

Cash conversion cycle American Products is concerned about managing cash efficiently. On the average, inventories have an age of 90 days, and accounts receivable are collected in 60 days. Accounts payable are paid approximately 30 days after they arise. The firm has annual ...

11th grade [URGENT]

Help with my research essay!? I have this assignment I have to do and its a research essay. I was wondering if this was a good topic (not too broad or not too specific) for my essay: Behind fast food, or like does fast food take effect on obesity? I've chosen to do something ...

english

This is the 1st paragraph to my essay: Social awkwardness Ever since I can remember people have always commented on my height, this made me very uncomfortable and awkward about it around my peers. I recall a time when my mother got into an argument with a woman at an Easter ...

Physics

Suppose you’re eating in a restaurant where the dishes are shared at the table and all placed uniformly on a rotating disk-like surface. Model this surface as a thin disk of radius 33.4 cm. You can’t stop thinking about physics even though you’re out with your friends, ...

French help ASAP!

I need information about d'Arsene Lupin.I have to do a report about it and I have no clue what I'm doing. Does anyone know of an english site with onfo abouit this I don't really want to read french. I put your topic into www.google.com and here are the results: http://www....

Water Chemistry

What is cation exchange? How is the best way to plot surface water or groundwater data to see if you have cation exchange? Can you recommend references to learn more about this? Thank you

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