# physics please HELP !

126,957 results, page 88

### physics

Cora is a passenger in a car traveling east along a country highway that is parallel to a railroad track and clear of any traffic. Her friend Liz is driving. They come up behind the last car of a train on the track. Initially, the train is moving a little slower than they are...

### math

missed this in parade magazine, please answer for me man owns cows and chickens that total 30 when the son couned them his answer was 74 legs how many chicken did the farmer own x=cows y=chickens x+y=30 4x+2y =74 please finish for me Solve one equation for one variable. Take ...

### please help me!

(8q-4)(6q^2+q+1)

### Help please

is a(bc)=(ab)(ac)

### Help Please

Is a(bc)=(ab)(ac)

### Please Help

(−6)∙(a+2b−3c−4d)−(−2)∙(−4a−3b+2c+d)

### Math (Check answers, please.)

Hello. I am having some difficulty with this problem. Could you please check my answer? You start searching for a buried object by marking the center of a field as (0, 0), with coordinates giving distances in yards. Coordinates to the north or east are positive, and ...

### holocaust

I need informatiom on when the Holocaust began and ended. http://en.wikipedia.org/wiki/Holocaust Scroll down to the Contents and read section 4. =) Please remember that posting several times with the same or very similar topic -- and for which you receive the same responses...

### ms. sue can you plz help

can you help me with this please. Taking either the constructivist theory of education or the behaviorist theory of education, write a 700-1,050 word paper in which you describe your ideals for effective classroom management. In separate paragraphs describe your approach to ...

### Chemistry

For two questions below, first write and balance the equation for the chemical reaction. Please, also review the material in Chapter 8, if you will feel you might need it in order to answer the questions. Next, please answer the following questions: (a) What substance is...

### Physics

Please can you help out: 1)The Potential diff across the terminals of a battery is 8.5v when there is a current of 3amps in the cct from the -ve to the +ve terminal. When the current is 2amps in the reverse direction, the potential diff becomes 11volts. a) what is the internal...

### Accounting 212 (Managerial)

Could someone please assist in this matter. I'm trying to ascertain the straight-line discount amortization of a problem which is as follows. A company issues $4,000,000 of 6%, 15 year bonds dated January 1, 2007 that pay interest semiannually on June 30 and December 31. The ...

### Physics

Hello I am trying to solve this physics problem related to effusion of gases. The following data is given and I am asked to calculate the rate of effusion The data given; depth/thickness (t) Surface area (A) diffusion coefficient (D) Can someone help me out? The only law ...

### physics please help!!

One of the methods used to train astronauts for the effects of "zero gravity" in space is to put them in a specially equipped plane which has been stripped of seats and fitted with padded walls. The pilot then takes the plane up to an altitude of typically 8700 meters and, at ...

### Math

My Shopping List 1. Please describe how to find a unit price. * a price for foodstuffs, stated or shown as the cost per unit, as per pound, per kilogram, per dozen, Contemporary definitions for unit price Expand. noun. the cost of a single commodity Unit Prices Please use the...

### Chemistry-please help

The relative mass of a proton is 1 and the relative mass of a neutron is 1. 1)Why do we use the term "relative mass" instead of mass? Is it because the mass of a proton is compared to the mass of a carbon-12 atom? 2) Can we say that the relative mass of an atom is 2 (proton+...

### Physics

A. You drag a suitcase of mass 19 kg with a force of F at an angle 41.3 degrees with respect to the horizontal along a surface with kinetic coefficient of friction 0.54. The acceleration due to gravity is 9.8 m/s^2. What is the normal force on the suitcase? Answer in units of ...

### Physics

As preparation for this problem, review Conceptual Example 10. The drawing shows two planes each about to drop an empty fuel tank. At the moment of release each plane has the same speed of 140 m/s, and each tank is at the same height of 4.00 km above the ground. Although the ...

### Coordinate Geometry: Ms.Sue or someone please help

Hi! Can you please help me with this problem/proof? I'm not sure how to approach it. Thanks! Prove that a line perpendicular to a radius at the point where the radius meets the circle is tangent to the circle. Use coordinate geometry.Hi! Can you please help me with this ...

### Coordinate Geometry: Ms.Sue or someone please help

Hi! Can you please help me with this problem/proof? I'm not sure how to approach it. Thanks! Prove that a line perpendicular to a radius at the point where the radius meets the circle is tangent to the circle. Use coordinate geometry.Hi! Can you please help me with this ...

### English

Can you please check the following sentences for me, please? Thank you 1) The first inhabitants of Great Britain were the Iberians. They were followed by the Celts. 2)) They were organized in tribes (or used to live in tribes?) and were skilled (a synonym? experienced, ...

### Physics

A mixture of light with wavelength 540 nm and light with wavelength 400 nm is aimed at a pair of slits to produce a double-slit interference pattern. Which of these will be true? The pattern will be the same for both wavelengths. The central maximum will be at the same ...

### English

Did Joe DiMaggio set at least 2 records? What records did Joe DiMaggio set? I need at least 2 records please? Please Help!! Thanks!!

### physics

Icebergs in the North Atlantic present hazards to shipping, causing the length of shipping routes to increase by about 30 percent during the iceberg season. Attempts to destroy icebergs include planting explosives, bombing, torpedoing, shelling, ramming, and painting with ...

### Math please help!!

In most geometry courses, we learn that there's no such thing as "SSA Congruence". That is, if we have triangles ABC and DEF such that AB=DE, BC=EF, and ∠A=∠D, then we cannot deduce that ABC and DEF are congruent. However, there are a few special cases in which SSA...

### statistics

34. Two students (say A, and B) are challenged to solve a problem in statistics. Suppose that the probability that A will solve the problem is 40%, the probability that B will solve the problem is 55%, and the probability that A or B will solve the problem is 25%. The ...

### physics, torque

A crane shown in the drawing is lifting a 170-kg crate upward with an acceleration of 1.8 m/s2. The cable from the crate passes over a solid cylindrical pulley at the top of the boom. The pulley has a mass of 130 kg. The cable is then wound onto a hollow cylindrical drum that ...

### Physics

A passenger bus in Zurich, Switzerland derived its motive power from the energy stored in a large flywheel. The wheel was brought up to speed periodically, when the bus stopped at a station, by an electric motor, which could then be attached to the electric power lines. The ...

### TO Pallavi, CELINA, SWETA, katrina, nikita:

Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own. If there's not a tutor with this specialty online right now, be sure to go back into your textbook or use a good search engine...

### HELP!!!

I'm researching about Genocide of Durfur now. I want to find who has been assisting the victims. So someone please give me some good site about who assisting dardur's victims. I think some country and group were helping them. Please give me good cite. Thank you http://en....

### Pre-Calculus

I posted earlier and didn't get an answer so I'm posting again-hoping someone could please check these two-I think they're correct Please check my answer: I think it's correct? 1.Find polar form of (-3,2) r=sqrt of (-3)^2 + 2^2)=sqrt (13) = 3.61 tan^-1(2/-3) = 33.79 180-33.79...

### Physics Urgent!

1.You are driving at the speed of 28.7 m/s (64.2138 mph) when suddenly the car in front of you (previously traveling at the same speed) brakes. Considering an average human reaction, you press the brakes 0.427 s later. Assume that the brakes on both cars are fully engaged and ...

### Math

These problems I really don't understand and really need serious help :) 1.What the product of (5.1 x 10^3)x (3.2 x 10^3)?(Please express your answer in scientific notation) 16.32 x 10^6 1.632 x 10^7 16.32 x 10^9 1.632 x 10^10 2.What is the product of (7.28 x 10^-2)x(9.1 x 10...

### Algerbra

These problems I really don't understand and really need serious help :) 1.What the product of (5.1 x 10^3)x (3.2 x 10^3)?(Please express your answer in scientific notation) 16.32 x 10^6 1.632 x 10^7 16.32 x 10^9 1.632 x 10^10 2.What is the product of (7.28 x 10^-2)x(9.1 x 10...

### math

These problems I really don't understand and really need serious help :) 1.What the product of (5.1 x 10^3)x (3.2 x 10^3)?(Please express your answer in scientific notation) 16.32 x 10^6 1.632 x 10^7 16.32 x 10^9 1.632 x 10^10 2.What is the product of (7.28 x 10^-2)x(9.1 x 10...

### math

These problems I really don't understand and really need serious help :) 1.What the product of (5.1 x 10^3)x (3.2 x 10^3)?(Please express your answer in scientific notation) 16.32 x 10^6 .... 1.632 x 10^7 16.32 x 10^9 1.632 x 10^10 2.What is the product of (7.28 x 10^-2)x(9.1 ...

### Math

Half of a pizza was broccoli and half was mushroom. George ate 2/3 of the broccoli and 1/4 of thee mushroom part. How much of the pizza did he eat? I did this problem but I wasn't sure of my answer so I needed someone to see if I am right or not. My answer is 1/6 and I got ...

### english

In my examination, I come across following one word substitutes. I know some of the answers which I have written below. please help me to write other answers. 1. accept as heir (adopt) 2. ability to endure 3. able to live bothe on land and in water(amphibian) 4. approved by ...

### Physics

I'm understanding most of this physics, but here is one last question I would appreciate help on. Thank you! Okay, so the question involves a figure. A link to the question and the picture with it is below can be found by googling the question along with Holt physics. The link...

### physics

In the vertical jump, an Kobe Bryant starts from a crouch and jumps upward to reach as high as possible. Even the best athletes spend little more than 1.00 s in the air (their "hang time"). Treat Kobe as a particle and let ymax be his maximum height above the floor. Note: this...

### Physics

A serving of cereal has 800 cal (1 cal = .239 J). How far can you walk with this energy? Is the elapsed time ...

### English 101

Is this memo correct (semi-colon) in right sentence and time/date correct? Thanks! There were no punctuations at all when we were given this. We are going to make a few changes in the health plan we now offer; The Economy Plan and the Standard Plan—both of these will be ...

### physics

i need help understanding physics. im failing my class and don't want to do anything because i have zero clue where to start. im stuck on this problem currently. a cat pushes a ball from a 7.00 m high window, giving it a horizontal velocity of .20 m/s. how far from the base of...

### can someone please help me?

simplify the following expressions involving complex numbers. (3+2i)-(-7-i) 10 + 3i how did you do that? can you show me this one and explain how this time? (3+2i)(-7-i) or even (3-2i)^2 you would do 3+2i=5i, then -7-i=7i then 5i+7i=12i (3+2i)-(-7-i) = (3+2i) + (7 + i) = 3 + 7...

### HISTORY

I need to write an essay, and I would appreciate if you would not send me to links, please. Here is the question: Write an article explaining how the United States’ containment policy affected one major aspect of the Cold War (Truman Doctrine, Marshall Plan, Restructuring of...

### Static Electricity. 11th Grade Pre-AP Physics

Hi everyone! I need some help studying for a test on Static Electricity. I have a few review questions that I don't know how to do. Below they are numbered and in parenthesis I answered what I think you might have to do to get the answer. Please help me in any way you can. ...

### Biology

How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid water 6. Water has a ...

### Chemistry

I need to calculate the molecular mass of ehtylene glycol based on the freezing point depression. The teacher said that for glycol i=1 and to use the equation m=delta T / Kf X i Kf = -1.86C/m so I did -2.5C / -1.86 X 1 = 1.344 I know that 1.344 can't be the weight for glycol ...

### Physics

*I am lost on a bunch of different problems, and this is one of them. Please note that I am NOT asking for final answers, just some guidance so that I can figure out how to do the problem!!! I know that a lot of times on this site it is commented that we are fishing for ...

### Physics

You can use any coordinate system you like in order to solve a projectile motion problem. To demonstrate the truth of this statement, consider a ball thrown off the top of a building with a velocity v at an angle è with respect to the horizontal. Let the building be 50.0 m ...

### chem Help please!

A water heater is fueled by the combustion of propane as described by the following reaction: C3H8(g) + 5 O2(g) --> 3 CO2(g) + 4 H2O(l) a) Determine how much heat is released if 11.2 moles of propane are burned at 298 K and at a constant pressure of 1.00 bar. b) Assume that...

### Physics

I am really confused on the steps to solve this problem. This is my first time taking physics. The much needed help, would be strongly appreciated. a) Calculate the centripetal force exerted on a vehicle of mass m = 1630 kg that is moving at a speed of 13.9 m/s around a curve ...

### Math

I do not get this question at all,this is composite functions and all my answers to a) to c) is wrong,can someone please help me with this problem :)? Suppose a ship is sailing at a rate of 35km/h parellel to a straight shoreline. The ship is 10km from shore when it passes a ...

### Academic Writing II

Please, somebody help me. I need 3 traits on Robert Frost's writing and I'm clueless. I don't even like his poems, and I'm supposed to write a 3-paragraph paper on him. So far, I'm thinking 'He likes to write with humor' and 'He likes to use metaphors'. I don't have a third ...

### (Arts/Theater)(Stuck on what to do) Help please?

My improvisation teacher today told us to bring something with us to class where you can do a physical action with it. This action must be something you can do in barely 10 minutes and must have an actual ending to that action. We're doing this assignment tomorrow and I have ...

### English

Could you please check these sentences on illnesses, please? Thank you in advance. 1)I’ve got backache as a consequence of my slipped (herniated?) disc. I need to express this when I’m at the chemist’s or at the doctor’s. I need also to express that I need cortisone as...

### 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...

### physics question

The sum of the emfs and potential difference around a closed loop equals zero" is a consequence of: a) Newton's third law b) Ohm's law c) Newton's second law d) conservation of energy e) conservation of charge For this question: I had picked d conservation of energy but now I ...

### Physics. Help Please

Gabriele enters an east-w straight bike path at the 3.0-km mark and rides w at a constant speed of 8.0 m/s. At the same time, Xena rides east from the1.0-km mark at a constant speed of 6.0 m/s. 1. Write function x(t) that describe the position of Gabriele as a function of time...

### Physics

I came here earlier with this question: "A force of 20 N acts toward the west. Another force acts at the same point so that the resultant of the two forces is zero. What is the magnitude and direction of the second force?" I was wondering if someone could explain to me how to ...

### Social Studies -- Merisa

I've reposted your question because it was posted as an answer to another question. Next time, please click Post a New Question when you want to ask a question. Your question: Was the U.S right to become an imperialist country and was it right to take over Hawaii.(5 paragraphs...

### Stars and the Galaxies

if alpha centauri were to all of a sudden disappear, we wouldn't knknow 4 another 4.3 years. How come? Why would this be the case? would this be the case because its really far away from us and it's 4.3 light years away. So if it suddenly just vanished out of sight, then it ...

### Literature(Please help)

I tryed finding information on how to cite a movie in MLA style but I am still confused. I need to cite the movie Smooth Talk by Joyce Chopra. All I know is the name of the movie, director, pg-13 and 1986. Please help. Thank you. Also, I need to cite a journal article. Is this...

### us history

which answer best explains the contributions of women during the revolutionary war? a) women were in charge of the horses and artillery during the revolutionary war. b) women often poisoned British troops stationed in their towns during the revolutionary war. c) women served ...

### AP World History Please Help Me Mrs.Sue

Compare the political structure of Hellenistic Greece to that of the Greek world before 400 B.C.E. What was the function of philosophy in Greek culture? What, according to the authors, were the principles of Greek culture? Define a polis. How did the polis change between 800 ...

### Finance

i have tried so hard to understand this and i am totally confused. I just don't know where to begin. Can someone please, please help me?? Given the following information, answer the following: TR=$3Q TC= $1,200 = $2Q 1. what is the break-even level of output? 2. If the firms ...

### math

A textbook store sold a combined total of 315 physics and chemistry textbooks in a week. The number of physics textbooks sold was two times the number of chemistry textbooks sold. How many textbooks of each type were sold?

### math

kyle had 36 books in hislocker. some were library books, some were textbooks, and the rest were telophone books. the number of library books and textbooks combined equal twice the number of textbooks. the number of textbooks and telephone books combined equals three times the ...

### math

kyle had 36 books in hislocker. some were library books, some were textbooks, and the rest were telophone books. the number of library books and textbooks combined equal twice the number of textbooks. the number of textbooks and telephone books combined equals three times the ...

### math

kyle had 36 books in hislocker. some were library books, some were textbooks, and the rest were telophone books. the number of library books and textbooks combined equal twice the number of textbooks. the number of textbooks and telephone books combined equals three times the ...

### French

Difference between indefinite and definite articles? Indefinite = Un, Une, Des Defenite = La, Le, Les The indefinite articles means A or A(n) and Des means some. Le, and La mean the, and Les is the plural form of these two. Give example of each: 1.Je vais manger des fromage.(...

### Physics

Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 65.0. Dog exerts a force of 256 and dog exerts a force of 344 . A) Find the magnitude of the resultant force. B) Find the angle the resultant force makes with dog 's rope. You can do this ...

### English

Can you please put this into iambic penatmeter: It is the end of time as we know it The end of four years is coming very near It is time to look at my yearbook a bit, It's the yearbook of my past times, so dear Iambic pentameter sounds something like this: da-DA da-DA da-DA da...

### Physical Science

I needed help on these 3 questions that I don't quite understand. Can someone please explain to me how to solve the answer? Use this scenario to answer questions 1-3: A car crashes in a tree at a velocity -26.6 m/s. The passenger in the car is wearing a seat belt and is ...

### physics

from what height should you drop your physics textbook so that it takes 0.2 seconds for it to fall? ftom what height would you drop a baseball so it takes 0.2 seconds for it to fall?

### math-please help,need quickly

find the slant asymptote of the graphof the rational function. 1.f(x)=x^2-x-2/x-7 y=? 2. determine the symmetry of the graph of f. a. the graph has y-axis symmetry f(-x)=f(x) b. the graph has orgin symmetry f(-x)= -f(x) c. the graph has both y-axs and orgin symmetry d. the ...

### 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 ...

### supply and demand

two questions- 1. if sam decidedd to buy more vegtables does this imply that there has been an increase in quantity demanded . please graph as well 2. a dealer has recently started using a foreign supplier of goods rather than a local one . this caused his cost to decrease and...

### Physics

This is for physics class. Sally applies 32 N of force at an angle of 22 degrees above the horizontal to a 12 kg crate. Ignoring friction, calculate the horizontal acceleration of the crate? Conceptual: will the acceleration of the crate increase or decrease if the same force ...

### Physics

A not so brilliant physics students wants to jump from their 3rd floor apartment window to the swimming pool below. The problem is the base of the apartment is 8.00 meters from the pool’s edge. If the window is 20.0 meters high, how fast does the student have to be running ...

### physics

we can say that the force of gravity is equal to mass times acceleration were the acceleration is equal to gravity sense gravity is an acceleration because of newtons second law force = mass times acceleration hence Fg = mass times acceleration Fg = mass times gravity Fg = mg ...

### Economics

Hi, please help me with this econs question! thanks! I'm asked to sketch the average and marginal cost curves of a software company, in which when it first starts up, the costs are extremely high. (High start up costs, millions of dollar spent to make the software)But after it...

### CHEMISTRY

PLEASE HELP I REALLY DO NOT UNDERSTAND THIS YOU DON'T REALLY HAVE TO ANSWER THE QUESTIONS BUT AT LEAST JSUT A LITTLE HINT THATS ALL PLEASE AND I HAVE A QUIZ ON THIS TOMORROW MY TEACHER REALLY CANNOT TEACH 1) what flaws exsit in Dalton's model of the atom? 2) what flaws exist ...

### physics

I keep on getting the second part wrong. Can you please tell me where I messed up? Thank you. The lead female character in the movie Diamonds Are Forever is standing at the edge of an offshore oil rig. As she fires the gun, she is driven back over the edge and into the sea. ...

### Math Please Urgent

Here are the questions I need help with, please help. [(1/4)^-3 divide sign (1/4)^2]^-2 I got (1/4)^10 but I got it wrong (3^1/2)^3 _______ I got 1/216 9 (-56r^2)divide sign (-7r^2)= I got 8r x(y)(x)(2y) (12) (10xy^3) (3x^2y^2) (5x) (2y) simplify sqaure root of 160000 simplify...

### Physics-bobpursley can u check this again please

Q. A 10.6 kg weather rocket generates a thrust of 226.0 N. The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring constant is 402.0 N/m, is anchored to the ground. Initially, before the engne is ignited, the rocket sits ...

### COMM/215 Final Grammar exam, please help

Please help me out with my final grammar exam, COMM/215 Thank you

### Math

Guys please help me with this Trigonometry question based on De Moivre's theorem. Q: Find ¦È such that 0¡Ü¦È¡Ü360. cos7¦È + cos3¦È = cos5¦È I attempted to solve it with limited knowledge but I kind of doubt my answer. Anyway, this is how I did it : 1) [cos7...

### Physics :(( help please TT

If you've ever watched sailing, you will sometimes see a sailor hanging off the side of the boat, for example in this shot from the movie "The Thomas Crown Affair." Eventually, of course, the sailboat tips over so far that a person cannot keep it balanced. Consider an ...

### Math Essay

I have to write this paper over the history of math, can you please give me some other websites that I can use? So far I have one website from wikipedia. Also, can you please read my introduction? As of today, there are plenty of new developments in the area of Mathematics. ...

### English

Could you please revise the following sentences, please? 1) As a matter of fact, two among our science teachers are willing to partake in the project where English would be the lingua franca. 2) Translate the following words into English, then choose two adjectives describing ...

### physics

a block (mass m1) on a smooth horizontal surface, connected by a thin cord that passes over a pulley to as second block (m2), which hangs vertically. Ignore friction and the masses of the pulley and cord. If m1 = 13.0 kg and m2 = 6.0 kg determine the accleeration of each block...

### Physics-PLEASE HELP, it's due soon

Mass-spectrometer (device that selects atomic particles of different masses and charges) consists of cylindrical capacitor with inner radius R1=2.4 cm and outer radius R2=3 cm. Ions enter the mass-spectrometer through narrow slit S which is situated in between the capacitor ...

### physics

A 2.5 kg block of ice at a temperature of 0.0 degrees Celcius and an initial speed of 5.7 m/s slides across a level floor. If 3.3 x 10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block is entirely converted to...

### Physics Phase Constant

..im really stuck on this. can someone please explain? ------- Figure A [[which i tried to recreate below]] is a partial graph of the position function x(t) for a simple harmonic oscillator with an angular frequency of 1.1 rad/s. [a].....x(cm)....... ........5...

### physics

Juan was on vacation in Italy, and one of this adventures, he went up the Pisa tower. He wants to know the tower height using Physics, so he drops a small stone that he has in his pocket and takes the time it lasts to reach the ground. What is the Pisa tower height according ...

### TO DRWLS/MATH HELP PLEASE

How do i solve inequalitites with three variables. I still can't figure it outplease help. x+y=1 y-z=-3 2x+3y+z=1 THE ANSWERS ARE X=3,Y=-2,Z=1 i KNOW THE ANSWERS I JUST DON'T KNOW HOW THE BOOK GOT THE ANSWERS . i 'VE TRIED MANY DIFFERENT WAYS AND I STILL DONT' UNDERSTAND IT ...

### Health care please check answer

Please check my answer thank you :) A patient visits the doctor's office with abdominal pain of two days' duration. Medical history is significant for tonsillectomy and hypertension. The patient denies alcohol and drug abuse. The rectal exam confirms heme-negative stool. ...

### Speech

PLEASE, Can some one please help me complete the SECONDARY SUPPORT for this speech topic outline? Thesis Statement: My failures in high school taught me three important lessons in life. Primary Support 1 : I realized the importance of hard-work Secondary Support 1: Secondary ...