physics please HELP !
130,422 results, page 66

social studies
prepare a defence for the proposition that the Divine Right of Kings is necessary to good government. i don't get it. what does this mean? and i don't even understand the Divine Right of Kings, it was written in old english. please help me. and it also says that rewrite this ... 
Algebraplease check
Please check these: 1.When the fraction 2/3 is used as exponent, wht role does the denominator 3 play in evaluating expression? I think it indicates cube root of the base,correct? 2.sqrt of (2^4x/4^2x) is equilvalent to 2^4x, correct? 3.Simplify (2xy^2z^4/y^3/z^3)^2 would ... 
Math 8R  HW Qs. Check
Topic  Logic In the clues below, each variable represent a different digit ranging from 09. Determine what digit each variable represent g+g+g = d (3+3+3 = 9) j+e = j (2+0 = 2) g (to the 3rd power) = d (3, to the 2nd power = 9) b+9 = d (6+3 = 9) fb = c (76 = 1) i+h = a ... 
PLEASE HELP W/ COMPUTER SCIENCE?? JUST 1 PROBLEM?
Write a complete Main method that prints Hello, world to the screen. I have tried: MsgBox("Hello, World!") Console.WriteLine("Hello, world") MessageBox.Show("Hello, world") Almost every way that seems correct. Please help me. 
Physics
This has been posted before but I need someone to elaborate please. A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 19.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The ... 
Physics. PLEASE HELP!!
Consider a wheel (solid disk) of radius 0.748 m, mass 16 kg and moment of iner tia 1/2 MR^2 . The wheel rolls without slipping in a straight line in an uphill direction 27 above the horizontal. The wheel starts at angular speed 20.5882 rad/s but the rotation slows down as ... 
physics please help me
I am solving a problem and someone tol me to use this formula MgH = (1/2)*k*(H210)^2 + Mg*2 where did this equation come from. Its not in my book. What concepts does it use? Is it solved correctly? MgH = (1/2)*k*(H210)^2 + Mg*2 MgH = 0.5k(H12)^2 + 2Mg MgH = 05k(H^2  24H... 
ScienceQUICKLY PLEASE!!
13. Which invention below would not have been possible without the pioneering research of GermanAmerican physicist Albert Einstein, American physicist Robert Oppenheimer, and ItalianAmerican physicist Enrico Fermi? a. computer microchip b. nuclear reactor c. television d. ... 
Math please help thnks
A silver dollar is dropped from the top of a building that is 1398 feet tall. Use the position function below for freefalling objects. (Round your answers to 3 decimal places.) s(t) = 16t2 + v0t + s0 (a) Determine the position and velocity functions for the coin. s(t) = v(t... 
English
Please help write a reaction on this Article, I want to give good presentation. How can I make it interesting? Thank you! So, far I think the Author is Energy literate and motivates readers through his words. Please tell me how I can include "Energy conversion, Energy ... 
CALCULUS WXMAXIMA !!PLEASE!
y=log(100493/40000*x1) y=atan(100493/40000*x+1) y=exp(100493/40000*x+1) Note you will need 2 integrals to represent the area. Approximate the area of the region bounded by the given curves. I can do it with two but kinda struggling over here please helppp! 
chem please help!!!!!!!!!!!!
An unknown compound, X, is though to have a carboxyl group with a pKa of 2.0 and another ionizable group with a pKa between 5 and 8. When 75 mL of 0.1M NaOH is added to 100 mL of a 0.1M solution of X at pH 2.0, the pH increases to 6.72. Calculate the pKa of the second ... 
6th Grade Probability
The probability of winning a game is 25%. How many times should you expect to win if you play 36 times? A. 3 times B. 7 times C. 9 times (I think it's the answer) D. 11 times Please help me! If I'm wrong can someone please explain to me why and the correct steps and answer. ... 
geomety please help
the perimeter of a recatngle is 54 inches. The width is one inch less than the lenght. FInd the length and width. I just don't understand how to find the length and width if i am only givent eh perimeter please show work thank you 
math
please i need this question answered in a hurry how do you make a fraction as a decimal (Well i know how to do that) But how do you round the decimal to the nearest hundredth i need it answered in a hurry please 
High School
Please provide me some links to websites where I can buy and download US High School text books. I am now in a UK based school in Asia but I will be moving to America next year. So please provide useful links. 
algebra
Please help....struggling with word problems and please explain how to get the answer.... Max has a collection of 210 coins consisting of nickels, dimes, and quarters. He has twice as many dimes as nickels, and 10 more quarters than dimes. How many coins of each kind does he ... 
English
I have to write an essay on "Why is college important to me" and I have to find two references and each reference must use quoted passage. Where can I find references for this topic because it's asking for my opinion please u need help please tell me what references to use 
math
suppose im trying to build a rectangular garden but I only have 24 meters of fence to use. so what is the largest area I can make my rectangular garden? please help I don't get it! I have to use the USE format and I don't get the question can you just explain please? 
chemistry
1.2 mol HCl and 3.9 mol NaOH react to this equation, HCl + NaOH=NaCl + H20 If the limited reactant id HCl, calculate the amount of NaCl formed in moles. Please help and explain how to solve this so I may understand it better please and thank you. 
Account,communicationskill,Economics,Business Law
Make a speech,Your md is 70year. Please state your question clearly. Please also 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 ... 
college physics
A cylindrical stone column of diameter 2R = 1.47 m and height H = 4.46 m is transported in standing position by a dolly. When the dolly accelerates or decelerates slowly enough, the column stands upright, but when the dolly’s acceleration magnitude exceed a critical value ac... 
Physics
2.0 kg weight is on simple, horizontally oscillation (in a spring) with the time 1.8 s. The distance between the outmost dots in the oscillation is 0.16 m. a) What is the angular speed (w) of the oscillation ? b) What is the force constant (k) of the spring? c) What is the ... 
Chemistry(Please check)
.50  x / x = 3.20e1 I need to solve for x. I was going to do .50 X 3.20e1 and then take the square root but this is not correct. I am not sure what to do. Thank you for your help. Math(Please help)  Reiny, Tuesday, April 17, 2012 at 3:18pm You probably meant (.50  x)/x = ... 
physics please help me!
Earth turns on its axis approximately once every 24 hours. The radius of Earth is 6.38 X 10^6 m. a.) If some astronomical catastrophe suddenly brought Earth to a screeching halt (a physical impossibility as far as we know), with what speed would Earth's inhabitants who live at... 
physics
A cylindrical space colony 8 km in radius and 60 km long has been proposed as living quarters for future space explorers. Such a habitat would have cities, land and lakes on the inside surface and air and clouds in the center. All this would be held in place by the rotation of... 
Physics please help
The gun, mount, and train car of a railway had a total mass of 1.22 x 10^6 kg. The gun fired a projectile that was 80 cm in diameter and weighed 7502 kg. In the firing, the gun has been elevated 20 degrees above the horizontal. If the railway gun at rest before firing and ... 
Math (Very Easy Math)
I'm kind of confused as to what simplified mean? Can you please provide me with a definiton... Like I'm kind of stumped as to what one is more simplified 7(2x + 3) or 14x 21 Please explain what it mean for an expression to be "simplified" 
Trig
can I please have help with these 3 questions? 1. Solve this equation graphically on the interval [0, 2ð]. list the solutions. sin(2x)1=tan x 2. solve sin x cos x= sqrt3/4 3. solve tan^2 x3tan x+2=0 thank you! show step by step please. 
college algebraplease help
what does Descartes rule of signs tell you about the possible number of positive real number zeros and the possible number of negative real zeros of the function? 1. f(x)=2x^55x^2+x1 2. f(x)=5x^6+7x^4x6 please show work 
English Writing
Please help me... People believe in God because... And there is life on earth because... And people who believe in God think that God has put human beings on this earth because... I have to write continue of these sentences... Could you guys help me please? 
math
1)Question : granny georgette and kiwi have a combined age of 77 if kiwi is 13 years less than twice granny georgette age how old is kiwi. please check my answer and correct me if i'm wrong. please. . . . thanks thanks 
economics
please please please please help me this is due tomorrow!!! this is a table with some questions and i don't know how to solve it (1)real domestic output (GDP=DI) in billions $200 $250 $300 $350 $400 $450 $500 $550 (2)aggregate expenditures private closed economy billions $240... 
geometry
graph the following 2 graphs  y=2x+3 and y=2x4. a)state the intersections on the y axis and the x axis. b)what is the vertical and horizontal difference between the two graphs? PLEASE help i don't understand? I know how to graph the eqautions but not too sure about the ... 
Social Studies
Who are some famous people that were born in France? Please give me someone who has lot's of info not just 2 or 3 notes. I need someone famous who has lot's and lot's of notes. I tried typing it on google and I found nothing! Please help me! Thanks... 
phyics (PLEASE PLEASE READ)
a model rocket rises with constant accerleration to a height of 3.2 m, at which point its speed is 26.0 m/s. (a) how much time does it take for the rocket to reach this height? (b) what was the magnitude of the rocket's acceration? (c) find the height and speed of the rocket 0... 
Chemistry  help please
In an experiment, when 25 mL of 5.5 x 10^3 M NaOH is mixed with 30 mL of 7.5 x 10^3 M Fe(Br)2, a hydroxide compound is formed (Ksp = 1.8 x 10^15). Which of the following describes the resulting solution? a. The product is unsaturated b. The mixture product is saturated c. ... 
physics
Can you please help me find the theory of Robert Hooke on Wave Explanation of Colors. Please... My report about this is due on Monday. Thank you for helping. God bless. According to (Broken Link Removed) , "Robert Hooke (16351703) who started as an assistant to Robert Boyle, ... 
Physics please help
The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four railway cars having a ... 
Physics  Quidditch
For the second part: The draw the plane vector which is the same as the desired results. At the end of the plane vector, draw the wind vector. That is where the plane will end up. So, for a 1/2 hour flight: (80 km/h) * (hour/2) at 30 degrees E of S. or 40km at 30 degrees E of ... 
Physics
An athlete finished the 100 meter race in 10sec. What was his average speed? acceleration? Acceleration time? Acceleration distance Help with few questions already got the already got the first two V=d/t =100m/10s =10m/s and Acceleration= VfVi/t =10m/s0/10s =10m/s^2 how to ... 
Physics
Ok, my Physics professor gave us this to do uncertainty propagation with these equations. Can some please show me some examples on each of these so I know I'm doing them right? Uncertainty Propagation Since raw data includes uncertainty, all calculations include uncertainty. ... 
physics
Sam is sitting in her fishing boat watching a trout swim below the surface. She guesses the apparent depth of the trout at 2.0m. She estimates that her eyes are about 1.0 m above the water's surface, and that the angle at which she's observing the trout is 45 degrees. b) ... 
Physics
A vector drawn 55 mm long represents a velocity of 25 m/s. How long should you draw a vector to represent a velocity of 17 m/s? please help me!! 55mm is to 25m/s as X is to 17m/s...maybe? thanks..i tried that and the answer was wrong...these questions are just really tricky. ... 
Physics  please check over
A charged particle moves at a constant velocity in a straight line through a region in space... a) is the electric field zero in the region? Explain b) is the magnetic field zero i the region? Explain I think a is yes because a charged particle will always create an electric ... 
Calculus!!!
I need your help... I've posted this question a while ago but no one has answered it yet. Please please help me. Which of the following series can be used to compute ln(.8)? a) ln(x1) expanded about x=0 b) lnx about x=0 c) ln x in powers of (x1) d) ln(x1) in powers of (x1... 
physics
Curve A is banked at 11.2 °, and curve B is banked at an angle of 15.2 °. A car can travel around curve A without relying on friction at a speed of 14.5 m/s. At what speed can this car travel around curve B without relying on friction? Do I need to find radius in order to ... 
SAT MATH
I don't remember what problem I struggled to understand... But it was something like this... There are 3000 numbers so how many of them are odd.. SometI don't remember what problem I struggled to understand... But it was something like this... There are 3000 numbers so how ... 
Chemistry
Hi can someone please help with this question, or atlest direct me in the right direction. Please and thank you. The initial rate of reaction H2O2(aq) > H2O (l) + 1/2 O2(g) is found to be1.7*10^3 M/s . Assume that this rate holds for 2 minutes. Start with 165ml of 1.55M ... 
please check my work language
write the plural for each noun potatopotatoes shoeshoes autoautos speechspeeches describe the kinds of information about words that can found in a dictionary *prononciation *parts of speech *definition and the word *how many syllabuls a word has is there anything else ... 
Algebra
Fiona invested $1000 at 8% compounded continuously. At the same time Maria invested $1100 at 8% compounded daily. How long will it take for their investments to be equal in value? Assume there are 365 days in every year. Please help I have tried everything and cannot solve ... 
Chemistry
Balance the equation: NO2 (aq) + Al (s) > NH3 (g) + AlO2 (aq) (basic solution) ** please note the "2" on the NO2 and AlO2 are not subscripts, they are the charges. I missed a few classes in Chemistry and find myself lost. I have tried to learn these equations with ... 
Physics. PLEASE HELP!!
A 1.3 kg steel ball and 8 m cord of negligible mass make up a simple pendulum that can pivot without friction about the point O. This pendulum is released from rest in a horizontal position and when the ball is at its lowest point it strikes a 1.3 kg block sitting at rest on ... 
Math(Please check)
For an experiment on specific heat capacities of metal in physics, I am trying to calculate my percent error but am having some trouble. After collecting my experimental data for c (cal/g) for the object that was used which was aluminum my results are: trial 1 = .19 trial 2... 
Physics
Two cars lost in a blinding rainstorm are traveling across a large field, each thinking they are on the road. They collide. If the distance between them is 174 meters and the red car is traveling at 6 mph at a 45 degree angle toward the impact point, and the blue car is ... 
Physics
A 1.8 tonne railway truck moving at a speed of 3m/s up a steady incline comes to a stop after 45m. If the sum of the friction opposing the truck amounts to 80N What is the angle of elevation of the slope? I found Fg using m*g THen I tried using v^2=u^2 + 2as to find the ... 
Math help please ASAP
2. Simplify the polynomial. –3f^2 + 4f – 3 + 8f^2 + 7f + 1 5f2 – 11f + 2 11f2 + 11f + 2 5f2 + 11f – 2 –5f2 + 11f – 2 No idea how to do this please explain!!!! 
PHYSICS
The length of a bicycle pedal arm is 0.152 m, and a downward force of 146 N is applied to the pedal by the rider's foot. What is the magnitude of the torque about the pedal arm's pivot point when the arm makes the following angles with the vertical? (a) 30° (b) 90° (c) 180... 
Physics
Which of the following involves a nonzero net force? I. A hockeypuck sliding at a constant speed on ice. II. The earth revolving around the sun at a constant speed. III. An object falling near the surface of the earth. A) I only B) III only C) Both I and II D) Both II and ... 
Physics please help
The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four railway cars having a ... 
Physics please help
The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four railway cars having a ... 
Physics(Please help, thank you)
Using a force table the direction and magnitude had to be found for the following measurements: F1 = 200 grams at 30 degrees; F2 = 200 grams at 120 degrees The magnitude and direction found was 280 grams at 257 degrees. Using the magnitude and direction of F1 and F2 I need to ... 
Physics please help!
An object is moving along a straight line and the uncertainty in its position is 1.1 m. (a) Find the minimum uncertainty in the momentum of the object. (b) Find the minimum uncertainty in the object's velocity, assuming that the object is a golf ball (mass = 0.045 kg). (c) ... 
Physics
Please help me!! I need this as soon as possible. 2.A billiard ball at rest is struck by the cue ball of the same mass whose speed is 5 m/s .After an elastic collision the cue ball goes off at 50 degree with respect to its original direction of motion and the struck ball goes ... 
Physics
I'm comparing the "gforce" of a rocket and a race car. My answer for the race car corresponds to the answer in the book but my answer for the rocket is off by 1. The book says I need to add 1 G because the rocket is going upward. So, instead of my answer of .87 G, the correct... 
physics
A 14.5 kg ring has 3 ropes attached to it. One rope is being pulled due North with a force of 340 N. Another rope is being pulled 68 degrees South of West with a force of 450 N. How hard and in what direction must the third rope be pulled in order to cause the ring to move 15 ... 
Physics
A singleturn square loop of side L is centered on the axis of a long solenoid. In addition, the plane of the square loop is perpendicular to the axis of the solenoid. The solenoid has 1490 turns per meter and a diameter of 6.00 cm, and carries a current of 2.46 A. Find the ... 
Financing
Please..I need help asap If a firm pays its bill with a 30 day delay, what fraction of its purchases will be in paid in the current quarter? Please show me how you get this answer Since a quarter is three months long, then 2/3 of the firm's purchases are paid in the quarter in... 
drivers ed
can someone please tell me a good website or give me a good link where i can take a practice driving test for a permit (learners licence). pleeease, i really need to practice, and i need a test that is updated. close to the real test. please help me 
business
Please please I need help with this question. thanks For 2010, Fielder Corporation reported net income of $30,000; net sales $400,000; and average share outstanding 6,000. There were no preferred stock dividends. What was the 2010 earnings per share? a.$4.66 b.$0.20 c.$66.67 d... 
4th grade Science (Please Help!)
Bowl A and Bowl B are filled with the same amount of water. Bowl A is covered in plastic wrap. Both bowls are left on a counter. The water level is checked in both bowls after 1 week. What is the hypothesis? Please HELP! 
algebra
can someone help me with this question it is very hard the question is 4j  3 = 5 the solutions are a)j=1/2 b)j=2 c)j=8 d)j=32 someone please help me on this pretty pretty please 
free verse poems please
i need really good examples of free verse poems please 
Help Please, Oh PleaseAlgebra
Identify 3x^5 − x^2 + 4x as a monomial, binomial, or trinomial. A. trinomial B. binomial C. monomial D. none of these 
Math please help ms sue
The Jaspers collect nickels, dimes, and quarters in a jar. When they count the change in the jar, there are twice as many nickels as there are quarters. If there is $15.30 in dimes and $74.80 in all, how many quarters are there. Please include an equation and steps. 
Math
Hi, so I am supposed to calculate the volum of my prism as if it were a prism. I know I'm supposed to to do Volum=1/3* area of the base* height. But I get confused can you please help me. These are the measurements of my prism. Length=5cm Width=17cm Height=22cm. Please help me... 
Chemistry Basics Please Help!
Choose either homogeneous or heterogeneous. Tea: homogenous Concrete: heterogeneous Soda: homogeneous Soapy Water: homogeneous Salt Water: homogeneous Granite: heterogeneous Please help, and thanks lots :D 
Chemistry :(
hello, i would be glad if someone answer to my question fast please as i am having a class test tomorrow. So here's the question: Q:An Alkaline with 16 carbons has a molecular formula of: (a)C16 H16 (b)C16 H34 (c)C16 H8 (d)C16 H32 (e)C16 H48 please tell me which option out of ... 
Physics
I have tried to solve this problem in multiple ways, but i keep getting it wrong please help A 48.0 {\rm kg} ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 1.50 turns each second. The distance from one hand to the other ... 
English
Please please please check my answers and explain to me why they are right or wrong!!! 24.) Choose the correct voice of the underlined verb. (1 point) The pitcher THREW the ball to the catcher. a.) active** b.) passive 25.) Choose the correct voice of the underlined verb. (1 ... 
physics
4. one joule per second is equal to one 5. Joules per second is an alternative unit use for expressing 6. A typical bicycle is a  machine 7. When Ma>1 the machine effort force is  than the resistance force. 8. A landscaper pushes a lawnmower a distance of 60 m... 
Physics
Musicians can use beats to tune their instruments. One flute is properly tuned and plays the musical note A at exactly 440Hz. A second player sounds the same note and hears that her flute is slightly "flat" (that is, at too low of a frequency). Playing at the same time as the ... 
As physics
Please help and do it step by step all parts of questions and use: T = time(s) I=current (amps) Q=net charge on object (Coulombs) N=no electrons (and write if added or removed from object and how) E=elementary charge Two copper wires of diameter 1 mm and 2 mm are joined end to... 
physics
HI. Can someone please help me with this question. Two identical cars hit each other and lock bumpers. In each of the following cases, what are the speeds of the cars immediately after coupling bumpers? (a) A car moving with a speed of 90 km/h approaches a stationary car; (b) ... 
Physics
A 107 kg clock initially at rest on a horizontal floor requires a 673 N horizontal force to set it in motion. After the clock is in motion, a horizontal force of 522 N keeps it moving with a constant velocity. (a) Find ìs between the clock and the floor. 1 (b) Find ìk ... 
Physics
In my lab of linear expansion, I need to find out the coefficient of linear expansion. The data I got for an aluminum rod are initial length is 59.7cm, the change in length is 95mm, the change in temperature is 75.4 Celsius degrees. I converted 59.7cm to 0.597m, and 95mm to 0.... 
Physics
An unmarked police car traveling a constant 80 is passed by a speeder traveling 145 .Precisely 2.50 after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 1.80 , how much time passes before the police car overtakes the ... 
Physics
1.A 4.5kg object is at rest on a table with state friction of 0.56 and kinetic friction of 0.46. A force is applied such that the object just beings to move. If that same force is maintained, at what rate will the object accelerate? The answer is 0.98m/^2 2.A 2.0kg block is at... 
Physics
Please help! 1) While skiing in Jackson, Wyoming, your friend Ben (of mass 73.8 kg) started his descent down the bunny run, 23.9 m above the bottom of the run. If he started at rest and converted all of his gravitational potential energy into kinetic energy, what is Ben’s ... 
ExtremaCheck my work please?
Find and classify the relative maxima and minima of f(x) if f(x)= defint a=0 b=x function= t^24/(1+cos(x)^2) dt x^24/(1+cos(x)^2)= 0 x^24=0 x^2=4 x= +/ 2 So I got relative maximum as 2 and 2. And relative minimum as zero. However, when I graph it on Wolfram, it gives me ... 
Algebra 1 Just one question please :)
You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is 0.015. How confident can you be that your predicted value will be reasonably close to the actual value? Please help whenever you get the ... 
Math Help ASAP PLEASE!!!
You’ve probably heard of Albert Einstein's formula regarding the speed of light: E = mc2. While this is an important formula that you will use throughout your academic career, it is not a formula you apply in your daily life. Describe some common or unique formulas that you ... 
math please help someone! anyone!!!!
Lamont earns $5.70 per hour. last Friday Lamont received a pay check for $745.25. this pay check included an extra $200 bonus. about how many hours did Lamont work during the last pay period? ms sue please help, i would really appreciate it. 
English
Hi, I need to cite a source for a paper but I cant tell whether its a paper or an article or an article from a journal or book. Can you please help. "title of work" author from jump cut, no 27, July 1981, pp 2732 copyright Jump Cut: A review of Contemporary Media, 1982, 2005 ... 
Living environment(please check thank YOU Ms.Sue)
Cause: When hydrochloric acid backs up into the esophagus Effect: called Acid Reflux Cause: As a result of the acidic ph in the stomach Effect: help break down food Cause: As the epigolottis covers the larynx, Effect: I NEED HELP WITH THIS Cause: when reverse peristalsis ... 
English: Please help
Identify the word that best describes the underlined word which for this sentence is "the shelter" The volunteers provided the shelter with new crates, beds, and bowls for the dogs. 1.direct object ****** 2.indirect object 3.predicate nominative 4.predicate adjective I am ... 
MATH PLEASE HELP
Anna mixes the letters S, E, L, E, C, T, E and D thoroughly, without looking, Mary draws one letter. Expressed as a fraction, decimal, and percentage, what is the probability that E will not be the letter mary selects A 3/8 0.375 37.5% B 8/5 1.6 16% C 5/8 0.625 62.5% D 8/3 2.... 
physics please help
One end of a thin rod is attached to a pivot, about which it can rotate without friction. Air resistance is absent. The rod has a length of 0.59 m and is uniform. It is hanging vertically straight downward. The end of the rod nearest the floor is given a linear speed v0, so ... 
Physics Help, Please
The figure below shows two speakers, A and B, which are emitting identical, synchronized (inphase) sound waves at 240kHz. A person standing a point C hears a relatively loud sound. She then starts walking towards point D, and notices the sound gets quieter, reaching a minimum... 
physics
the first law of thermodynamics can be expressed with the equation ΔU=ΔQ+ΔW where ΔU is the change of internal energy,ΔQ is the heat supplied to the system. Apply the first law to the brakes of a train as the brakes are applied and the train ...