physics please HELP !
130,011 results, page 79

physics
Rockets A and B are fired straight upward from rest. Rocket A is launched first and accelerates at 11.2 m/s2. Rocket B is launched 2.10 s after Rocket A and B accelerates at 14.6 m/s2. Solve for the moment in time when the rockets are separated by 484 m. a) how long after ... 
physics
A beam of electrons with momentum p=10^23 kg m/s passed through a narrow slit of width d=10^5 m. What is the uncertainty component of the momentum in the xdirection due to the uncertainty principle (approximately)? a. change in p greater or equal to 10^26 kg m/s b. change ... 
physics
When a solid is dropped from the boat (floating in water)into the water ,then the level of water will fall if density of that solid body is greater than density of water i.e when that solid body sinks.WHY?I tried hard ,but i am unable to figured it out according to my ... 
Health care please check answer
Please check my answer thanks you for your help :) You are a Health information mangement professional and you are doing Medicare coding to help you assign reimbursement classifications to episodes of care you would use a fee schedule. True or False I said false I think that ... 
Calculus please help
I have 3 calc problems that i have not been able to do please help me... i've been on here yesterday as well but no one was able to assist me with these particular ones... 1. If f(x)=5x^3–2/x4 find f'(x)____ what i got was (4x^2+7x12)/x^8 2. The position function of a ... 
English
Can you please check these few sentencens, please? I went to John yestarday. OR I went to John's house yesterday. Leave the school and cross the street. OR Go out of the school and cross the street? I'd like cod (not a cod) with carrots. The bus trip lasts (or will last) two ... 
Chemistry PLEASE HELP
Hi! I really really need help in this question: what observation is expected when: 1. an acid (nitric acid, HNO3) is added to a solution containing carbonate or bicarbonate ions? 2. silver ion is added to a solution containing chloride (or bromide or iodide) ions? Please help ... 
Physics
Hello, I need that someone help me with this excersise. I have to calculate (USING INTEGRATION) the motion ecuation of a particle. The excersise give me the ecuation of the velocity that is v=14t32 , the initial time t1=3 And the initial position of the particle: X1=25 My ... 
Physics
The 3.42 kg physics book shown is connected by a string to a 518.0 g coffee cup. The book is given a push up the slope and released with a speed of 2.73 m/s. The coefficients of friction are μs = 0.490 and μk = 0.185. What is the acceleration of the book if the slope... 
Physics
The 3.42 kg physics book shown is connected by a string to a 518.0 g coffee cup. The book is given a push up the slope and released with a speed of 2.73 m/s. The coefficients of friction are μs = 0.490 and μk = 0.185. What is the acceleration of the book if the slope... 
Physics
The 3.42 kg physics book shown is connected by a string to a 518.0 g coffee cup. The book is given a push up the slope and released with a speed of 2.73 m/s. The coefficients of friction are μs = 0.490 and μk = 0.185. What is the acceleration of the book if the slope... 
Math
At small town high there are 100 students,each of whom takes atleast one of Biology,Chemistry,or physics.There are 50 student in Biology,60 in chemistry,and 70 in Physics.If 24 students are enrolled in exactly two of the classes,how many students are in all three? 
physics
(1) Dervive an expression for the maximum speed of v of electron in terms of V,me, and e. (2) The electron is replaced with a proton that starts from rest at the positive plate and travels toward the negative plate. Compare the maximum speed of the protons to the maximum speed... 
physics
A charge of +q is located at the origin, while an identical charge is located on the x axis at x = 0.45 m. A third charge of +4q is located on the x axis at such a place that the net electrostatic force on the charge at the origin doubles, its direction remaining unchanged. ... 
science
1.when air is cold, it has less ______. 2.the expansion joints _______ when it is cold outside. 3.the expansion joints ______ when it is hot outside. 4.what might happen to a road without expansion joints? The _____ is a blank need answer please and 4 need it to be short ... 
Math help Please
Kevin has a triangle table cloth with side lengths of 5 inches, 12 inches. He wants to cover a right angles triangle table with table cloth. Find if the cloth is appropriate for the table. Can someone please help me. We are doing Pythagorean Theorem  I found the third side to... 
Physics
A bothersome feature of many physical measurements is the presence of a background signal (commonly called "noise"). It is necessary, therefore, to subtract off this background level from the data to obtain a valid measurement. Suppose the measured background level is 4.7 mV. ... 
Physics
Please help me. I need physics help. I don't understand how to do these questions. Can someone show me what I should use? and explain. I'll do calculations by myself. A stationary curling stone is struck in a glancing collision by a second curling stone of equal mass. If the ... 
Physics. Urgent help need!!
A baseball player hits a triple and ends up on third base. The baseball "diamond" is a square, each side with length 24.2 m, with home plate and the three bases on the four corners. What is the magnitude of his displacement? * I'm not familiar with the sport i divided the ... 
Science PLEASE, this is due tomorrow for test!
What is the section of EMS of satellite phones? What wavelength and frequency does it use? are there any dangers in using it? What is the wavelength and frequency of pagers? are there any dangers in using it? Is there any danger in using cordless phones? What is the wavelength... 
history
please help me on my history assessment its due tomorrow morning so its urgent the assessment is based on world war 1 innovation and inventions we were to choose a technology and i choose weapons now we have to write how did weapons make world war 1 a war to end all wars this ... 
Chemistry (PLS HELP ASAP)
What is the molecular weight of a gas if a 15.0g sample has a pressure of 836 mm Hg at 25.0 degrees C in a 2.00 L flask? a)167 b)1.35 c)176 d)11.1 e)none of the above Please explain... I need to understand how to do this. Thanks. I know that I have to use PV=nRT, then solve ... 
English
Can you please check this sentence for me, please? Thank you for your invaluable help. 1) I like this singer for his determination and energy transmitted (?) during his concerts. In spite of his illness, which affected the last years of his life, he remained faithful to his ... 
English
Can you please check these sentences for me please? Thank you. 1 Puritans was the name given to the more (most?) extreme Protestants within the Church of England. 2)Charles I's reign was characterized by the continuous conflict with the Parliament. Puritans held a considerable... 
Social Studies
10. Arabia and Iraq are most affected by the scarcity (or lack of) which resource? Ok I have tried really hard to research this and maybe I'm thinking to hard but I came up with water or oil. _LOL_ and I have a huge headache...but I am not going to give up. Could someone ... 
Physics please check
A rotating door is made from four rectangular glass panes, as shown in the drawing. The mass of each pane is 88 kg. A person pushes on the outer edge of one pane with a force of F = 53 N that is directed perpendicular to the pane. Determine the magnitude of the door's angular ... 
help asap please
Part II Choose three of your favorite television characters; past or present. Complete the following matrix describing the characters’ personalities from the point of view of the three theorists, Jung, Freud, and Rogers. TV Character Jung Rogers Freud 1. Tim the Toolman ... 
Science PLEASE HELP!
What are some hypotheses that have been proposed for the mass extinctions throughout geologic time? Please refer to a specific time period and the organisms which became extinct.  I was thinking: The ... 
Physics waves check answers please
I am not too sure if my answers are correct. Here are the questions: 1. A student standing near a brick wall claps her hands and hears the echo 0.250 s later. If the speed of sound was 340.0 m/s, how far from the wall was she? For this question I got 85 m. 2. How much faster ... 
chem
the element nitrogen and magnesium react to give magnesium nitride according to the balanced equation N2 + 3Mg = Mg3N2 suppose you have 0.3616 mol of n2 1how many moles of mg are needed for complete reaction? 2what mass of Mg3N2, in grams can be produced? ( the molar mass of... 
Chemistry
Since ethanol is cheaper than gasoline , today's gasoline's contain varying amonts of ethanol to keep prices lower. given that the enthalpy of combustion of ethanol is 1367 kj/mole and that the aveage energy released by one gram of gasoline is 43 kj: ) Calculae the heat ... 
Physics
A projectile is shot on level ground with a horizontal velocity of 21 m/s and a vertical velocity of 45 m/s. Part 1) Find the time the projectile is in the air. The acceleration due to gravity is 9.8 m/s^2 .Answer in units of s. Part 2) Find the range R. Answer in units of m. ... 
math
Can someone please help me with this math problem. My teacher is looking for me to show my work, but I don't how to solve the problem to show my work. Please help!!! The problem is 2 1/2 + 3 1/4 + 3 5/8. Thank you for your help. 
Preschool/Storytelling
Would you please look over my answers to these questions and see if you agree that I have chosen the best answer. If my answers are wrongplease let me know. 1. When storytelling,memorization is: A. a good idea for phrases or sections that are repeated in the story. B. ... 
Chemistry
Could someone please let me know if I have the answer to the following question correct? If my answer is incorrect could you please help me answer this question. what is the difference between 3M and 9M of sulfuric acid? I think the difference is that there are 3 moles of ... 
Geometry
Find the measure of angle 8, 7, 6, 5 measure of angle 7 is 2x+15 measure of angle 8 is 3x The diagram is a X shape but the top and bottom is more squished down basically. 5 on the left 6 on the top 7 on the right 8 on the bottom Please help I cant find the formula to do this. ... 
College Physics Help
A thin rod (length = 1.10 m) is oriented vertically, with its bottom end attached to the floor by means of a frictionless hinge. The mass of the rod may be ignored, compared to the mass of the object fixed to the top of the rod. The rod, starting from rest, tips over and ... 
physics
An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical advantage of this system... 
english 19
Pronoun case 19a. Please send an invitation to Bob and she. 19b. Please send an invitation to Bob and her. My answer is: My answer is 19b 
math ms sue please help, PLEASE!!!!
the giants and the redskins played in Sunday night football. the giants kicked 2 field goals and the redskins kicked 5 field goals. write a ratio that describes the number of giant field goals to redskin field goals. 
MATH HELP!
I HAVE 19 COINS TO MAKE A DOLLAR. THE COINS ARE 9 DIMES AND 10 PENNIES. THE NEXT PROBLEM SAYS USE HALF AS MANY DIMES AS PENNIES STILL MAKING A DOLLAR WITH 19 COINS. SOMEONE PLEASE EXPLAIN BECAUSE I REALLY DON'T UNDERSTAND!!!!! THX PLEASE JUST EXPLAIN WHAT IT MEANS I DON'T HAVE... 
PLEASE HELP!!!!! (Right Triangle Question)
Point N is on hypotenuse BC of triangle ABC such than angle CAN is 45 degrees. If AC=8 and AB=6, find AN. I did Pythagorean Theorem for triangle ABC, and hypotenuse BC will be 10. I don't know how to continue from there. Oh, I'm also unsure about this, but if angle CAN is 45 ... 
physics
As your bus rounds a flat curve at constant speed, a package with mass 0.900 , suspended from the luggage compartment of the bus by a string 46.0 long, is found to hang at rest relative to the bus, with the string making an angle of 27.0with the vertical. In this position, the... 
physics TEST TMRW PLS HELP!
In zerogravity astronaut training and equipment testing, NASA flies a KC135A aircraft along a parabolic flight path. The aircraft climbs from 24 000 ft to 31 000 ft, where it enters the zerog parabola with a velocity of 143 m/s nose high at 45.0° and exists with velocity ... 
Finances and Math
Can someone please help me solve these problems or help me find an easy formula?..No matter how many times I read or try calculating I can't get it please help me..I would really appreciate it thank you.. Calculate the future value of the following: $5,000 compounded annually ... 
math
Math homework help????? please? heres what it says on the paper. Using proportions, you can calculate the dimensions of objects without having to measure them. solve the problems that follow... heres the problem ===================================== amy is 5 feet tall and ... 
PreCalcPlease check my answerI think its correc
Could someone please check theseI had tried one last night but it was really wrong so I'm been workinghopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x10 =0 2x^2 + 5x10+10=0+10 2x^2 + 5x = 10 2x^2 + 5x/2 = 10/2 2x^2... 
Physics
The electric field intensity at a point 2 meters from the surface of a uniformly charged conducting sphere is 1920 N/C. At a point 4 meters from its center, the electric field intensity is 3000 N/C. a.) Determine the radius of the sphere. Determine the electric field intensity... 
physics
A 6.25gram bullet travels at 365 m/s. It hits and enters a 4.50kg crate. The crates slides 0.15m along a floor until it comes to rest. Find the friction force between the crate and the floor I used p=mv to get momentum and got 2.28125 N•s I calculated speed of the crate/... 
physics ..PLEASE HELP ASSIGN DUE SOON :(
an object on an inclined ramp of mass 1.39kg. The angle of the inclined surface is 29deg with the horizontal. The object on the ramp is connected to a second object of mass 2.17kg on a horizontal surface below an overhang that is formed by the inclined surface. Further, an ... 
Chemistry please help
I have test procedure to evaluate the clarity of a sodium hydroxide (NaOH) sample that goes like this: Dissolve 10g of NaOH in carbon dioxide free water and dilute to 100ml with the same solvent. Please explain how to perform this test. Do I boil 100ml of deionized water and ... 
technoligy
1. What column do you put the deposits in when you are balancing your checkbook a=date b=transaction c=debit d=credit 2. when creating a formula for balancing in a checkbook, what do you subtract from the credits? a=debits b=check numbers c=transaction d=dates 3. Why is it ... 
Physics
I need help with question one and I need question three to be checked please? 1.How does the mass of a nucleon compare with the mass of an electron? 3.Why do protons in a very large nucleus have a greater chance of flying apart by electrical repulsion? I think its because the... 
physics
MultipleConcept Example 9 discusses the physics principles used in this problem. Three resistors, 2.2, 3.9, and 6.4 Ω, are connected in series across a 24V battery. Find the power delivered to each resistor. resistance (Ω) power (W) 2.2 ______ 3.9 ______ 6.4 ______ 
7th grade science
Sorry! this is alot of questions. Science is not my best subject but i still do well in it but the questions are really hard for me pleas help answer this. What might you ask yourself in drawing a conclusion about an experiment? Why is scientific inquiry a process with many ... 
calculus!!! please help!!!
f(x)=2x^3x^2+1 [1,4]=interval Set up the limit process (once with right endpts, and the other with left entdpts.) to find the area under the curve and above the xaxis on the given interval Should the right and left endpt limit set ups have the same area? If so what is it? ... 
Science  Please check my answer
This is my problem: When Christy takes her pet dog for a walk, the dog walks at a very consistent pace of 0.45 m/s. There are 20.1 m between the front of Christy’s house to the nearest dog park. How far will Christy’s dog have walked toward the park after 25s? This is my ... 
Chemistry
Sample of 10.7g of O2 reacts completely with CO to form CO2 3a) How many grams of CO2 will be formed. So 10.7g (1mol/32g) (2molCO2/2molCO2)(22.01gCO2/1molCO2) = 14.7g. Please is this right 3b) is the mass of CO2 ypu determined in the equation (3a) the minimum or the maximum ... 
early childhood
Can someone please help me with this? I think I have the right answerjust need verification. Which statement most accurately describes "normal" growth and development of the preschool child? 1.It occurs at a uniform rate for all chidren. 2.It is a simple process. 3.It has ... 
English
Writeacher,can you please check if everything is correct? Thank you. 1) Can you give me a hand to finish this exercise, please? 2) The answer to your question is on he tip of my tongue. 3) Behave yourself! Don't shrug your shoulders! 4) I can't see at a distance. I think you ... 
English rammar, Please correct my sentenced gramma
April 20,2016 Genecito Jimenez Lot 32 Blk 96 Bautista st. Zone 10 Dasmarinas City Cavite. tel: 0464725645 Dear Sir, Mrs. Maria Teresa P. Eleon is permanently staying in my apartment with her family and she is a good person in our community. Please kindly allow her to open a ... 
8th Grade Math
Please help! Which statement is false? A. The number zero is a rational number. B. Some irrational numbers are also rational numbers. C. Every irrational number is a real number. D. Every integer is a rational number. I thinks its D. Please help! 
Math Please help Ms. Sue
How can you determine if the given lines are perpendicular? Line 1: (1,3) and (3,3) Line 2: (3,0) and (3,3) A)determine if they have slopes with opposite values*** B)determine if they have the same slope C)determine if the product of their slope is 1 D)determine if the ... 
Physics
Help please How do the dark lines of an atom's absorption spectrum relate to the bright lines of its emission spectrum? A. The bright lines are at the same energies as the dark lines. B. The dark lines are at higher energies than the bright lines. C. The bright lines are at ... 
Physics
A system undergoes a twostep process. In the first step, the internal energy of the system increases by 368 J when 144 J of work is done on the system. In the second step, the internal energy of the system increases by 24 J when 248 J of work is done on the system. (a) For ... 
Physics Phase Constant
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 repost please check
Posted by Mary on Monday, November 5, 2007 at 8:19pm. A charged particle, passing through a certain region of space, has a velocity whose magnitude and direction remain constant. (a) If it is known that the external magnetic field is zero everywhere in this region, can you ... 
physics
Subjects Art Business Computers English Foreign Languages Health Home Economics Mathematics Music Physical Education Science Social Studies Features Contribute Download Experts Forum Job Openings Homework Tips Libraries.Jiskha Link to Us Reference School Supplies Search ... 
physics
Hi: I need help with the following physics problem. Can you explain it to me? Thank you, The fastest measured pitched baseball left the pitcher's hand at a speed of 50.0 . If the pitcher was in contact with the ball over a distance of 1.50 and produced constant acceleration, (... 
physics
You do a physics lab experiment on another planet. A small block is released from rest at the top of a long frictionless ramp that is inclined at an angle of 36.9° above the horizontal. You measure that a small block travels a distance 17.0 m down the incline in 8.60 s. What ... 
Physics
so I'm doing the back of this worksheet and on the bottom there's a list of a whole bunch of formulas... I'm asked to find the minimum coefficent of friction if the road was flat of a car which I still don't know how to do and posted a question about it below but anyways... so... 
Finding a Formula, help please !
Does anyone know the formula to find any point between two other given points in a line? Please, and thank you! The mindpoint formula xm= _(x1 + x2) /2 ym = (y1 + y2) /2 This give the midpoint (xm, ym) between the points x1,y1 and x2,y2 Thanks for the tip, but I was wondering ... 
AP CHEMISTRY NEED HELP PLEASE!
Calculate the enthalpy of combustion of C3H6: C3H6 (g) + 9/2 O2 (g) yield 3CO2 + 3H2O using the following data: 3C (s) + 3H2 (g) yield C3H6 (g) change in H= 53.3 kJ C(s)+O2 (g) yield CO2 (g) change in H= 394kJ H2 (g) + 1/2 O2 (g) yield H2O (l) change in heat= 286 kJ CHoices ... 
Math (Algebra)
Could I have someone check my work please? If I did something wrong please explain to me where I went wrong. Thank You. Example of the product rule to solve would be, (5^3)(6^3) Example of the quotient rule to solve would be, (4^2) / (8^2) Example of the power rule to solve ... 
algebra 3
. A physician made a survey of the roundworm infection of a rural region in Hubei province in 1999. There were 68 infected among the 350 randomly sampled males, and 36 infected among the 250 females. (1). Please make a statistical table according to the information above the ... 
Science. 11th Grade PreAP Physics
A positively charged light metal ball is suspended between two oppositely charged metal plates on an insulating thread as shown below. After being charged once, the plates are disconnected from the battery. Describe the behavior of the ball. Thank you so much! Could you please... 
Really Physics
A 2.4 Kg object moving to the right at 0.8c collides with a 3.2 kg object moving to left at 0.6c. They stick together. Find the mass and velocity of the resulting combined object by; a) assuming that you have no knowledge of relativistic physics, b) using the special theory of... 
Math
I need Help!  1.Peeta walked 8 miles. He stopped every 3/4 of a mile to eat a cookie. How many cookies did he eat during his walk? 2.What fraction is the same as the division problem below? A.8/3 B.5/8 C.8/2 D.3/8 3.Which division problem is ... 
Physics (Stress & Strain)
The ultimate strength of a steel rod is 550.000MPa. If the factor of safety of 3.000 is required, what is the maximum permissible load for the rod if it has a diameter of 4.100cm? ANS = kN (Round to 3 decimal places) ultimate strength = 550.000MPa Factor of safety = 3.000 Rod ... 
Physics (Stress & Strain)
The ultimate strength of a steel rod is 550.000MPa. If the factor of safety of 3.000 is required, what is the maximum permissible load for the rod if it has a diameter of 4.100cm? ANS = kN (Round to 3 decimal places) ultimate strength = 550.000MPa Factor of safety = 3.000 Rod ... 
science
Lab 1.1 Can somebody please, please help me with this lab?! I know it requires sketching and modeling which only i can do , but please, any help will be appreciated. I find these labs so hard to do, but my teacher said there's no alternative assignment and I HAVE to do them. ... 
science
Lab 1.1 Can somebody please, please help me with this lab?! I know it requires sketching and modeling which only i can do , but please, any help will be appreciated. I find these labs so hard to do, but my teacher said there's no alternative assignment and I HAVE to do them. ... 
physics
So I got this little sheet called Shoot the Chute To be sure you understand the preceeding question and answer, consider this one: A roller coaster is pulled to the top of a "shoot the chute" and allowed to roll down. For a bigger thrill you might wish the car to be going ... 
Physics
you measure the diameter of a circle then you calculate the radius of the circle using this diameter. (1) Which one has a greater uncertainty, the diameter or the radius? Why? you measure the radius of a circle then you calculate the diameter of the circle using this radius. (... 
Physics
A 4 kg mass is sliding on a fricitonless surface and explodes into two, 2 kg parts. One moving at 3 m/s due north and the other at 5 m/s 30 degrees north of east. What is the original speed of the mass? Can you please verify if my answer is correct? I used mV_0 = 2(3) =[cos30(... 
physics
Please reference the illustration at: screenshots<dot>firefox<dot>com/kBXqJ4tycTCPwjUw/brilliant<dot>org to answer the following question: On the edge of a wall, you build a brick tower that only holds because of the bricks' own weight. Your goal is to build ... 
Physics 11
I need help on this question 79 g of water at 95 degree Celsius were added to tap water at 22 degree Celsius, and the Temperature of the mixture after all thermal energy transfer ended at 36 degree Celsius. What was the mass of the tap water? (teacher's answer key : 412 grams... 
Math please help
Celeste is making fruit baskets for her service club to take to a local hospital. The directions say to fill the boxes using 5 apples for every 6 oranges. Celeste is filling her baskets with 2 apples for every 3 oranges. Complete the tables to find equivalent fractions Apples ... 
Physics (please help!!)
Analyze the flight of a projectile moving under the influence of gravity (mg) and linear, i.e., laminarflow drag (fD = bv), with b constant). Neglect (phase I); assume the projectile is launched from mthe origin at speed v1 and angle theta1 above the horizontal. WARNING: ... 
Physics (please help!!)
Analyze the flight of a projectile moving under the influence of gravity (mg) and linear, i.e., laminarflow drag (fD = bv), with b constant). Neglect (phase I); assume the projectile is launched from mthe origin at speed v1 and angle theta1 above the horizontal. WARNING: ... 
grammar
please help me if this is correct in grammar. please correct so that i will know the correct grammar. 1.Anyone have done this experience before. 
Physics
Two objects of different masses are joined by a light rod. a) Id the moment of inertia about the center of mas the minimum or maximum and why? b) If the two masses are 3kg and 5kg and the length of the rod is 2m, what are the moments of inertia of the system about an axis ... 
physics ( please help me)
a railroad handcar is moving along striaght, fricionless tracks. In each of the following cases the car initially has a total mass (car and contents of magniude 4.00 m/s^1. Find the final velocity of the car in each of the three cases. A) a 40.0 kg mass is thown sideways out ... 
Physics
I need help. Resistor 1: Watts=? Current=? Resistance=520 Volts=? Resistor 2: Watts=? Current=? Resistance=? Volts=57.5 Resistor 3: Watts=? Current=? Resistance=1200 Volts=? Total: Watts=? Current=? Resistance=? Volts=280 Find Resistor 2's resistance. Please help and Thank you 
Force if Distance is Doubled (Physics 11th Grade)
Two likecharged balloons, placed at a distance of .5 meters, experience a repulsive force of .32 N. What is the force if the distance between the two balloons is doubled? If you use Coulomb's Law, the equation used to find .32 N was Force = the constant of K multiplied by the... 
Math Help
I have to do this question in several ways like any possible way to do it so I've found one mathematical way, I can't do it like a physics question cause it's math. a bike travels at a constant speed of 10km/h. a bus starts 175 km behind the bike and catches up to the bike in ... 
GeographyNeed this ASAP Please
What countries could these be? I reallyy need help with this; it has to be done by tonight! 1. Country A= 'Shaped like an S, tropical rain forest, very populous, facing the South China Sea.' 2. Country B= 'A wet land bordered by mountains on west, north, and east; located ... 
Physics
Water at room temperature flows with a constant speed of 8 m/s through a nozzle with a square cross section, as shown in the figure. Water enters the nozzle at point A and exits the nozzle at point B. The lengths of the sides of the square cross section at A and B are 64 cm ... 
Physics please help?????
The figure shows three rotating, uniform disks that are coupled by belts. One belt runs around the rims of disks A and C. Another belt runs around a central hub on disk A and the rim of disk B. The belts move smoothly without slippage on the rims and hub. Disk A has radius R; ... 
calculus
Find the linearization of the function below at x = π/3.? y=sin(x)/x Your answer should be a linear function of x where the coefficients are accurate to at least two decimal places. You can enter π in your answer as "pi" (without the quotes). I am not able to figure ...