# physics please HELP !

127,551 results, page 87

### 6ht grammar

I need help on plural possessives Are these answers correct? Balloon races have become popular. Several aiport's are supporting this race. An area is reserved spectators. One spectator's son is in the race. The occasion is a photographer's delight. Will all the passengers ...

### spanish

please check my grammar, and please tell me which one I can change to imperfect, because I try to write some sentences in preterit, and some in imperfect, thank you!!! AprendÃ espaÃ±ol porque quise mejorar mi espaÃ±ol. VisitÃ© los cuadros en el museo. ComÃ ...

### psychology 210

I want someone to please help me with the asignment psychology and health problems. resource:figure 4.3on page.127 of psychology and the challenges of life:Adjustmentin the new millennium write a 1,050 to 1,400 word paper. summarize the multi-factorial model and how it relates...

### physics

this is my last one i couldn't find the answer please help ??? Two workers pull horizontally on a heavy box, but one pulls twice as hard as the other. The larger pull is directed at 25.0 o west of north, and the resultant of these two pulls is 400.0 N directly northward. Use ...

### com215

Read the 4 scenarios under "Getting Started," on page 311 in Business and Administrative Communication (7th ed.). Choose 1 of the 4 scenarios. Post your response to this 2-part question: Identify one or more ways that the cultural differences in the scenario you choose may be ...

### chemistry

This question I really don't get it. I tried tried tried to figure out how to start solve the problem but still couldn't figure out. So can you help me with one question PLEASE? If so, can you please explain to me how you get the answer? Also can you show me step by step of ...

### Algebra

Could you please check some of my Algebra problems please? Write the standard form of the equation of the circle with the given center and radius. 1. (-7,4);8 I got (x+7)^2 + (y-4)^2=64 2. (-7,10); square root of 17 I got (x+7)^2 + (y-10)^2=17 3. (0,0); 2 square root of 2 I ...

### Math, Please help :/

Kyle had 36 books in his locker. Some were library books, some were textbooks, and the rest were telephone books. The number of library books and telephone books combined equals 3 times the number of library books.How many of each type of book were in Kyle's locker? Please ...

### Social Studies

Please help me by checking the following answer to the question. Which of the following was part of the Great Compromise reached at the Constitutional Convention? A. Every state would have two seats in the Senate. B. Some slaves would be included in the population count. C. ...

### English-(PLEASE CHECK)

Could someone please check my diagram of the stage in A Raisin in the Sun? UP STAGE a door(either a door(either Beneatha's + Beneatha's + Mama's or Mama's or Walter's + Walter's + Ruth's bedroom) Ruth's bedroom) STAGE RIGHT Travis' bed STAGE LEFT DOWN STAGE audience But where ...

### Physics

1) Calculate the tensile stress in a 33.000mm diameter rod subjected to a pull of 30.000kN. ANS= MPa (Round to 3 decimal places) Diameter = 33.000mm = 0.033m 30.000kN = 30000N Area = pi*d^2/4 = 3.1416 * 0.033^2/ 4 = 3.1416 *0.001089/ 4 = 0.0034212024/ 4 = 8.553006*10^-4 = 0....

### physics

The current indoor world record time in the 200-m race is 19.92 s, held by Frank Fredericks of Namibia (1996), while the indoor record time in the one-mile race is 228.5 s, held by Hicham El Guerrouj of Morroco (1997). (a) Find the mean speed in meters per second corresponding...

### Calculus- please help

A sporting goods store sells 100 pool tables per year. It costs $20 to store one pool table for a year, based on the average inventory on hand. It costs $40 for each delivery of pool tables. How many times per year and in what lot size should the store order pool tables to ...

### Calc- Urgent Please

An open box (has a bottom but no top) needs to be constructed which has a volume of 500 cu. in. The bottom of the box is to be a square. Let x be one of the sides of the bottom. Express the area of the four sides and bottom of box as a function of x alone. What value of x will...

### Physics - pulley

A construction crew pulls up an 87.5-kg load using a rope thrown over a pulley and pulled by an electric motor. They lift the load 15.5 m and it arrives with a speed of 15.6 m/s having started from rest. Assume that acceleration was not constant. I have done the problem but am...

### English - Hamlet Essay

I've been asked to write an Essay for english class on Hamlet. It sais to : Select one speech from Act IV of Hamlet and write a cause and effect essay for how it targets its audience. You may choose a target audience of any context or production of the play - the original ...

### Physics

Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space ...

### Physics

Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space ...

### Physics

A thin rod, of length L and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass m is attached to the other end. The rod is pulled aside through an angle and released. What is the speed of the ball at the lowest point if L = 2.20 m...

### Science (please help me)

I have 2 question on science 7. please help me. 1.state whether each substance is a mechanical mixture, a suspension, or a solution. My answers are at the bottom. a)green relish b)soda pop in a glass c)bubble tea d)traditional Aborigial paint made of red orchre and grease my ...

### algebra - more help please

A thermometer reading 7 degrees C is brought into a room with a constant temperature of 29 degrees C. If the thermometer reads 15 degrees C after 4 minutes, what will it read in 6 minutes? 11 minutes? So I guess I need to put into newton's law of cooling: u(t) = T + (u sub ...

### physics (please help)

Win 1010” AM radio broadcasts at 1010KHz. Determine the wavelength of its signal, knowing that all radio waves travel at 3.00 X 10^8 m/s. f=1010kHz v=3.00 X10^8 m/s v=F X lambda lambda= 2.9 X 10^5 For a particular type of wave in a particular medium why must f and lambda be ...

### Physics

12 kg wagon is being pulled at an angle of 38o above horizontal. What force is applied to the wagon if it accelerates from rest to a speed of 2.2 m/s over a distance of 3.4 m? Is this question a typo? Am I supposed to solve for force or work? Physics - silverback, Tuesday, ...

### PLEASE HELP! Math

I really need help with this one question on my math pretests and I have no idea what to do! The question is: Mandy begins bicycling west at 30 miles per hour at 11:00 am. If Liz leaves from the same point 20 minutes later bicycling west at 36 miles per hour, when will she ...

### English

Could you please check these last sentences, please? 1) He is wearing a grey sleeveless T-shirt and a pair of tracksuit pants. 1) Most penguins at the Blackbrook Zoological Park are swimming actively in the water except for a sad-faced one, who (which?) is standing on a rock. ...

### Physics

A 11.3 weather rocket generates a thrust of 240 . The rocket, pointing upward, is clamped to thetop of a vertical spring. The bottom of the spring, whose springconstant is 570 , is anchored to the ground. Initially, before the engine is ignited, therocket sits at rest on top ...

### Math

Huong covered a box with sticky-backed decorating paper. The paper costs $.03 per square inch. How much money will Huong need to spend on paper if the length is 7 inches, width is 3 inches, and the height is 9 inches? I thought Huong needed to spend $3.42 because I multiplied ...

### English

Could you please check the following sentences, please? 1) He kept himself busy by keeping (?) record of how long he had been on the island.He made a mark for each day he had been on the island. 2) He decided to build himself a house in a cave. He found a cave halfway up the ...

### math derivative please help

the derivative of 2x^e is zero right or no? do i have to use the log formula 2 x^e is x to the power 2.718.. It is not a constant and therefore the derivative is not zero. Use the formula for the derivative of x to a power that is constant (x^a). The formula for that may ...

### MATH

how many milligrams are there in a kilogram I give up alejandra. I showed you how to count your way to the answer and you keep posting. We don't give answers but we try to help you understand so you don't need us. Please go back and count your way from milligrams to kilograms...

### Math

Hey, Ms. Sue, or anybody that is apart of this association. I already tried reviewing this answer, but I didn't seem to get anything. I'm clueless over this answer, so.. Can you please help? I've been stuck on this, and nobody wants to help me. This is the last place to ever ...

### social studies

i don't get it in the 1880's Laws in the 1800's restricted___________immagritio to the U.S. I think you mean IMMIGRATION In the late 1800s, the United States didn't want people from Asia to come here. Our laws made it difficult or impossible for people from Asia to immigrate ...

### Please proofread my Essay

Could you please check for fragments, pronoun agreement, and tell me if I use first person all the way through. Thanks! Here is the format I am suppose to be following: a. Have an Introduction: Your introduction will tell readers what you knew about the topic before starting ...

### Physics

physics - drwls, Sunday, January 24, 2010 at 2:50am Compute the angle of the strings from vertical. It is sin^-1 (8.5/40) Call this angle A If the string tension is T T sin A = F (the Coulomb force) T cos A = M g tan A = F/Mg You need to say what the units of the mass are. All...

### physics

Im trying to study for my physics exam by doing some extra problems, however im stuck with this one. any help is much appreciated Two tiny spheres have the same mass and carry charges of the same magnitude. The mass of each sphere is 4.62 x 10-6 kg. The gravitational force ...

### physics

It's a snowy day and you're pulling a friend along a level road on a sled. You've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. You've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a ...

### Spanish Song Translation

Can someone please translate the last two stanzas of "Bonito" by Jarabe de Palo? I tried translating it but couldn't and so I tried to find a good translation that looked like a human and not a translator did it, but that didn't work out either. So now I'm stuck. Please help ...

### U.S. Government Question

I have one more question that I would appreciate your help with. In representing the Bank of the United States in McCulloch v. Maryland, attorney Daniel Webster argued that Maryland could not tax a branch of the bank because operating the bank was an action by Congress that ...

### Physics

In a physics experiment, 250g of water is placed in a 50g calorimeter cup made of aluminum when both are at 15C. Steam at 100C is completely absorbed by passing it through the water, raising the temperature of water and cup to 45C. Find the mass of steam absorbed. Specific ...

### Physics

In a physics experiment, 250g of water is placed in a 50g calorimeter cup made of aluminum when both are at 15C. Steam at 100C is completely absorbed by passing it through the water, raising the temperature of water and cup to 45C. Find the mass of steam absorbed. Specific ...

### PLEASE HELP ME!!!

I have to do a 4 pg report on the mediterranean ineed to know the native plants. please don't give me a full report. i just want the name of the plants and a brief summary. Olive trees are in the warm parts. Some of the plants you see everywhere in most parts of Italy are the ...

### English

Please help me find these words in the book hatchet. These words are located in chapter 13-16 and all I need to knnow is where these words are located. I have found the book online and I have posted it underneath. I have done a couple of words all ready so I have only posted ...

### French

Could someone please explain to me verb inversion? I never get confused in French, but this verb inversion stuff is really confusing. It just seems so pointless! Please help, Thanks, brie Thank you for using the Jiskha Homework Help Forum. If you are doing verb inversion, you ...

### physics

Hello! I'm studying for physics and I am stuck on this question (I have the answer): Two identical cars are travelling on a horizontal road, one of them is going at twice the speed of the other one. Both break using the same force. The slower car breaks completely after 20m. ...

### Physics (URGENT!)

-vehicle 1: 2,060lbs -vehicle 2: 5,800lbs -both roads are 45mph -The cars were impacted at right angles -roadway was dry, 69 degrees -friction between tire & road: .60=mu -skid marks (PRIOR to impact): v1=20ft, v2=7ft. *you can find the entire problem w/ more info online if ...

### Physics(Stress & Strain)

1) Calculate the tensile stress in a 33.000mm diameter rod subjected to a pull of 30.000kN. ANS= MPa (Round to 3 decimal places) Diameter = 33.000mm = 0.033m 30.000kN = 30000N Area = pi*d^2/4 = 3.1416 * 0.033^2/ 4 = 3.1416 *0.001089/ 4 = 0.0034212024/ 4 = 8.553006*10^-4 = 0....

### English

Please read for any errors. And correct them. The premium on your disability insurance policy is overdue. Don’t let his valuable policy lapse. If you become disabled you will receive a monthly income from this policy. This disability policy provides importance security for ...

### Social Science

Reading this article, Happiness is a thing called stable extraversion: a further examination of the relationship between the Oxford Happiness Inventory and Eysenck's dimensional model of personality and gender Determine what the independent and dependent variables are in this ...

### physics

If you are sitting at home in your room, the walls please help me pick one best answer of the followings. 1. emit visible light with a peak wavelength close to 0.5 micrometer. 2. emit thermal radiation in the near infrared with a peak wavelength close to 1 micrometer. 3. emit ...

### physics

A person throws a physics book off of a cliff at an initial speed of 3 m/s at an angle of 20 degrees. The book is in the air for a total of 2.5 seconds. a) How high is the cliff? b) How far away from the base of the cliff does the book land? c) What is the magnitude and ...

### Physics

Peggy drives from Cornwall to Atkins Glen in 52 min. Cornwall is 75 km from Illium in a direction 26° west of south. Atkins Glen is 27.1 km from Illium in a direction 16° south of west. Use Illium as your origin. (a) Draw the initial and final position vectors. (Do this on ...

### Social studies

Hi! Please help me with major question. I have CBA project now (what is it CBA you can find here: k12.wa.us/assessment/WASL/SocialStudies/HighSchool.aspx). My constitutional issue is "Can people be a property?" which is linked with movement for the African American equality ...

### Financing and Accounting

How would I find the formula for these problems? Please help me.. I would really appreciate it.. thank you Calculate the present value of the following: $7,000 in 5 years at an annual discount rate of 6% $7,000 in 5 years at a semiannual discount rate of 6% $7,000 in 5 years ...

### 8th Grade Connections Academy

1. What is 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^-2)? (Please express your answer in scientific notation.) 6....

### research

What year did the Holocaust begin?when did it end and how? I've already answered that twice in the last day or so on this board. Please look back on all of your posts and their answers. If you don't want to read the answers you get on this board, fine. But please don't keep ...

### Trig

Please EXPLAIN the steps on how to solve these problems. Please provide detailed steps. A rectangle picture is 12 by 16 inches. If a frame of uniform width contains an area of 165 square inches, what is the width of the frame? The length of a rectangular garden is 6 feet more ...

### Math

Suppose the central Park Coffee Shop sells a cup of expresso for 2.00 and a cup of cappuccino for 2.50. On Friday Destiny sold 30 more cups of cappuccino than expresso for a total of 178.50, worth of expresso and cappuccino. How many cups of each were sold? I am learion to ...

### geometry

prove: the segment joining the midpoints of the two sides of a triangle is parallel to the third side. the coordinates are A(0,0)B(a,0)on the the x axis, and C(c,d), M is midpoint and the coordinates of M is (c/2,d/2) and N is also a midpoint whose coordinates are (a+c/2, d/2...

### Science

PLEASE HELP ME!!!!!! I need to know at least 5 things about the puriotic table. PLEASE!!!!! Here is a periodic table on the web. Look on the left hand side and scroll all the items listed there. There are many many items listed; i.e,many more than five. http://www.webelements....

### Ms sue please help

Hey ms sue can you please help me to simplify this paragraph? Raynaud's disease occurs when the small arteries (arterioles) that serve the fingers, toes, ears, or nose go into spasm. When arterioles go into spasm, they cut off blood supply and cause digits (fingers and toes) ...

### GK or Dr.Bob222...Chemistry please help...

Please refer to the previous post Chemistry Help Please. Moles of S203^2- = (molarity)(volume): =(0.032400 mol/L)(0.053 litres S203^2-) = 0.03240 moles S203^2- Posted by DrBob222 on Wednesday, October 22, 2008 at 9:37pm in response to GK..please check...Chemistry Help Please I...

### Health/Nutrition

I have a real bad teacher for this subject and she gave us a lot of homeowrk.I need an answer fast on these two.Its a crossword puzzle.Here they are: 1)A chemical chain that is the basic component of all liquids. 2)A chemical substance in food that helps maintain the body. ...

### Intro to World Religions

Hi, for my review and response paper on gospel of mary I have to inegrate it with other readings that we've done in class: Crow, Osage, Seneca, and Gikuyu creation stories. Eliade. Hymn to Aton (Egyption). Rosemary Ruether: Three Classical Creation Stories. Quran 7:11-31, 54-...

### math

Help!! I cant find this word fesselation. I looked in books and the internet nothing please help Spell it this way: tesselation ok do you know wht it means tesselation. I tried it both ways tesselation and fesselation.F ound nothing HELP!!!! I cant find tesselation and its due...

### SCIENCE

CAN SOMEONE PLEASE HELP ME AND TELL ME IF IM RIGHT even a guess would be good ive been trying 4 a answer since 6:00 PLEASE help me :/ i think that the 2nd one is correct because i no that energy is not lost when water is boiled it is gained because of the bubbles and electrons...

### Business Decision-Making

I am trying to figure this out for my business decision-making class, it is to be a power point presentation 3 pages; sounds simple but I am totally lost. The first slide is to explain how statistical Tools can be valuable to a business, slide 2 specific examples where a ...

### Spanish-6th grade-Please check my answers

Could you please check these I think they're correct but I'm not sure. 1.How old am I? Tengo once años. 2.How old is your father? Mi padre tiene cuarenta y seis. 3.Do I have siblings? Sí,tengo dos hermanos. 4.Son mayores or menores? Son mayores. 5.Are you older or younger ...

### math

We consider the non-homogeneous problem {y''-16y} = {256x^{2}} First we consider the homogeneous problem {y''-16y} = 0 : 1) the auxiliary equation is a r^2+br+c = =0 . ________________ 2) The roots of the auxiliary equation are (enter answers as a comma separated list). ...

### physics

In Physics, it is important to use mathemat- ical approximations. For instance, in a small angle approximation, tan α ∼ sin α . Find the largest angle α for which the dif- ference of sin α − tan α is less than 3.52% of the sin α value.

### Math

Please show me how to solve: Hannah took a survey of 500 students at her school to find out whether they liked baseball or football. The results are shown in the Venn diagram. How many of the students surveyed like football? 28% liked baseball, 32% liked both, 16% liked ...

### math urgent please help

Mrs Buttler bought 1,800 shares of Stairwell Mutual Fund At an offer price of $3.00 per share. She later sold the shares at a net asset value of $4.60m per share. During the time Mrs Buttler owned the shares, Stairwell Mutual paid adividend of $0.80 per share. What is Mrs ...

### Physics

A block attached to a spring with unknown spring constant oscillates with a period of 7.0 s. Parts a to d are independent questions, each referring to the initial situation. What is the period if... The mass is doubled? The mass is halved? The amplitude is doubled? The spring ...

### physics please help

One lump of clay traveling at 14.98 m/s overtakes a second lump traveling at 4.98 m/s. After collision they are stuck together. To the nearest tenth of a m/s what is their common velocity? -------------------------------------------------------------------------------- 4 If ...

### art

Could you please check my answer please...thank you Which of the following is the best evaluation of the artwork based on the criterion that the piece feature imaginary creatures or things. 1. The artwork is successful because it features a fully clothed raven-headed winged ...

### eth. need some info please

Ms. Sue, Please guide me to some info or data in order to discuss this statement. According Pyne, how have post-9-11 government responses affected prejudice and discrimination against Muslims, Arabs, and related groups? List two to three characteristics of Orientalism. How ...

### math

i'm working on this question and honestly I have tries but I don't understanding anything about the question, can someone please HELP me? I have been posted this question and hoping for someone can help me please! For the following scenario, develop an equation and a set of 5 ...

### algebra help

I am really confused on this question can some one help me out please the length of a rectangular playing field is 5 ft less than twice its width If the perimeter of the playing field is 230 ft. find the length and width of the field. I believe i am suppose to start with P+2w+...

### English

Ms Sue, could you please check my sentences, please? I still have a few doubts. 1) How long is it since you (last) played with the band? Since last year. Or just last year. 2) How long ago did you last play with the band? A year ago. When describing a picture in a book, would ...

### AP Physics B (Heat Engines)

18. (II) At a steam power plant, steam engines work in pairs, the heat output of the first one being the approximate ehat input of the second. Th eoperating temeprautres of the first are 680 degrees C and 430 degrees C, and of the second 415 degrees C and 280 degrees C. If the...

### Physics please check

A charge of -3.00 µC is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.125 m). The charges on the circle are -4.60 µC at the position due north and +5.00 µC at the position due east. What is the magnitude and ...

### physics

i figured out the ratio its 1.10 , don't know how to get the second part please help!! my understanding is not good enough to answer part 2 Pretend you have two containers, one filled with ethyl alcohol and the other filled with benzene. How would you show the distance light ...

### physics

hey, i was wondering if someone could explain and help me with this problems. please and thank you! A person holds an object of mass m = 4 kg on the palm of the hand with the arm stretched as shown in the attached figure. Use the torque equilibrium equation to determine the ...

### Early Child Ed.

Would you please check these questions and my answers? Please let me know the ones you seem to think are wrong. 1. You want children to walk in the hallway. If they begin to run, the best thing to say to redirect them is: A. "Stop Running." B. "Walk in the hallway." C. "...

### Physics

Speedboat (A) negotiates a curve whose radius is 115 m. Speedboat (B) negotiates a curve whose radius is 240 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of the boats? My physics optional extra work: This would be helpful so...

### Physics

I have to compare and contrast three types of tires, and relate them to physics. I've chosen: <li> Racing tires <li> Winter tires <li> All season tires I've chosen to compare them on: <li> Tire tread pattern <li> Rubber compound <li> ??? As ...

### math

Can someone please help me with this word problem!?! I know the answer which is 784 feet. But I have no clue how to solve it. Can someone please show how to solve this problem? The word problem is: The melt in Your Mouth Chocolate Factory is a rectangular building. The ...

### Please Check Answers for Health

Please check my answers because I need to do good at this. 1. When consuming fats the healthiest choice is foods high in? A. saturated fats B. unsaturated fats * C. trans fat D. cholesterol 2. The body's main energy source should come from what essential nutrient? A. protein* ...

### English Punctuation

Where do the commas go in these sentences? Please check. 1. Most criminals are armed, and it is unlikely that a ban on guns would ever be passed in the United States,and, therefore, it is mandatory that police officers be armed. 2. Police officers must be knowledgable about ...

### Math

Theo made the table below to show the number of middle school students who attented the last football game. if this data were displayed in a circle graph, how many degrees would be in the sector representing the 8th grade Grades 6,7,8 # of students in 6th grade: 375 7th grade...

### 7th Grade Science Help Please

For his science project, Austin wants to determine if the pH of standing rainwater and places it indoors in a spot that does not receive a lot of sunlight to limit evaporation. Using a pH testing kit, he measures the pH of the water once a day for 20 days. What is the ...

### Chemistry URGENT

I am having a hard time understanding how to calculate pH. my textbook states that that pH =-log[H^+]. I have two questions that asks: What is the H^+ concentration in an acid with of pH 4.6? Express your answer as a power of 10. What is the H^+ concentration in a base with a ...

### accounting

1)utilities expense, 2)accounts payable, 3)commissions,4)capital, 5)withdrawals.where do they appear? income statement or statement of changes in owner equity or balance sheet.i think #1 is balance sheet #2 is income statement, #3 statement of chnges in owner equity #4 i think...

### science

1.scientists who capture fish from depths of 1000m or more for study have to bring them to the surface in pressurized containers. why do they do this? 2.a car of mass 600 kg has four tyres each of surface area 0.005m^2. determine the pressure exerted by each tyre on the ground...

### physics plz

Can you help please Question1: A car makes a banked turn on a "real" road (meaning you can not ignore friction), which of the following are forces that act on the car: (for full credit you must select ALL that are true) A)centripetal force B) friction C) normal force from the ...

### Physics

A 0.340 kg particle moves in an xy plane according to x(t) = -15.00 + 2.00t - 4.00t3 and yet) = 25.00 + 7.00t - 9.00t2, with x and y in meters and t in seconds. At t = 0.700 s, what are (a) the magnitude and (b) the angle (relative to the positive direction of the x axis) of ...

### Physics

A car is stationary at a stop sign when it is hit directly from behind by a truck of mass 3000kg which was travelling at a speed of 9 m/s immediately before the collision. The two vehicles lock together and move forward with an initial speed of 6 m/s. a) what is the mass of ...

### Physics

A car is stationary at a stop sign when it is hit directly from behind by a truck of mass 3000kg which was travelling at a speed of 9 m/s immediately before the collision. The two vehicles lock together and move forward with an initial speed of 6 m/s. a) what is the mass of ...

### Art

The ancient civilizations of the Mediterranean region were noted for their great battles and powerful rulers. Post two artworks from two different cultures and compare how the idea of power is reflected in your two examples, include the name of the works. Talk about how the ...

### math please help

The speed of a passenger train is 8 mph faster than the speed of a freight train. The passenger train travels 310 miles in the same time it takes the freight train to travel 270 miles. Find the speed of each train. What is the speed of passenger train? What is the speed...