physics please HELP !
130,011 results, page 52

MODEL CONGRESS!!!
PLEASE!!!! SOMEONE HELP ME!!!! I NEED TO KNOW HOW MANY MEMBERS OF CONGRESS THERE ARE!!!!I ONLY NEED TO KNOW A NUMBER!!!!!!PLEASE HELP!!!! 
PLEASE HELP!!!!!
What is the distance (in miles) from Ny to Europe? It doesn't matter what place. Just the distance in miles or anything else. PLEASE! 
chemistryPlease confirm this
I'm pretty sure that OH has a bond order of 1. OH+ has a bond oder of 1. confirm this please. 
SOCIAL STUDIES PLEASE HELP
please read what i have posted for social studies below, I need help. 
math graphing the yintercept
2 y= +1 3 dont know how 2 solve it 2 get the yintercept dont know how 2 graph it please help and explain it please help 
math graphing the yintercept
y=2/3=1 dont know how 2 solve it 2 get the yintercept dont know how 2 graph it please help and explain it please 
Math
I really, really need help! Solve for the indicated variable. 8x+4y=12 Solve for y. Explanation too, please! Please and thanks! 
PLEASE HELP ME...geology
PLEASE CAN YOU HELP TO DESCRIBE BOTH. THE FELDSPAR FOUND IN GABBRO AND FELDSPAR FOUND IN GRANITE. 
English
Which one is more grammatically correct? Please remove your shoes. or Please, remove your shoes. 
math help please
Find the area of the Rectangel. . 7x+1   8x      A.15x+1 B.56x^2+8x C.56x+8 D.15x^2+9x I don't know what to do please help me. I don't understand. 
tips.
Please show your work. Tutors will not do your homework for you. Please show your work for any question that you are posting. 
physics waves transverse longitudinal
i real stuck on this and i really want explanations please. in which sprind do transverse waves travel faster, small diameter spring or slinky? i think this be the transverse waves but i not know how to explain why. in which spring do longitudinal waves travel faster? i think ... 
us history
agree or disagree? During the 1920 stock amrket crash, tbankers invested their depositors money in unsound investments. Please note that we don't do students' homework for them. Once YOU have come up with a response to YOUR questions, please repost and let us know what you ... 
ethn: Need info please
please direct me to some to the websites where I can get information for the question beloow: Leaders of the civil rights and black power movement and their contributions to their respective causes. How did these social pioneers forge the way for this important ratification? ... 
conics
The graph of y=x^2 is reflected in the xaxis, then stretched vertically by a factor of 2, and then translated 3 units to the left and 1 unit down. I need to write the equation of this parabola in standard and general form. I have 4 other questions so could someone please show... 
MATH HELP
Law of Gravitation Find an expression for the magnitude of the initial velocity that a projectile must possess in order to leave the earth when air friction is neglected. The gravitational constant for g is, G = 6.67428*10^11 m^3 Kg^1 s^2 Please answer the question fully ... 
English
The smugglers stood before the judge, who was known for her strict manner, and entered their pleas with feint hopes that the evidence would not prove their guilt. Which of the following homophones should be used to correct the error in the sentence above? A. Gilt B. Faint C. ... 
waves (please help)
I know its hard me explaining: In a problem I have it shows a picture of wave and shows the displacement from peak of one wave to the trough of the next. The choices are A: wavelength/2 B: wavelength C: 2 X amplitude D) period E) period/2 It doesnt show the height for an ... 
Physics
"An alpha particle (a helium nucleus) is traveling along the positive xaxis at 1 250 m/s when it enters a cylindrical tube of radius 0.500 m centered on the x axis. Inside the tube is a uniform electric field of 4.50 X 10^4 N/C pointing in the negative y direction. How far ... 
Physics
A wooden bridge crossing a canyon consists of a plank with length density λ = 2 kg/m suspended at h = 10.0 m below a tree branch by two ropes of length L = 2h and with a maximum rated tension of 2000 N, which are attached to the ends of the plank, as shown in the figure. ... 
physics please help
Three point charges, 5.6E6, 2.2E6, and 3.0E6, lie along the xaxis at 0.00 m, 0.031 m, and 0.059 m. What is the force exerted on q1 by the other two charges? What is the force exerted on q2 by the other forces? And what is the force exerted on q3 by the other two charges? ... 
PLEASE HELP TANGENTS AND CIRCLES PROBLEM GEOMETRY
PLEASE HELP I REALLY NEED HELP. Each of the three circles in the figure below is externally tangent to the other two, and each side of the triangle is tangent to two of the circles. If each circle has radius three, then find the perimeter of the triangle. The figure is ... 
PLEASE HELPPHYSICS HW
A 130 kg astronaut (including space suit) acquires a speed of 2.80 m/s by pushing off with his legs from an 2000 kg space capsule. What is the change in speed of the space capsule? As the reference frame, use the position of the space capsule before the push. If the push lasts... 
Physics
A 86.0 kg person steps into a car of mass 2500.0 kg, causing it to sink 3.0 cm. Assuming no damping, with what frequency will the car and passenger vibrate on the springs? Here is what I do. I take the mass and set it equal to k*x to get k, then divide by 4. Then I add the 2 ... 
physics
Two spherical objects are separated by a distance of 2.41 x 103 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As a result, each object... 
Physics
A rescue helicopter is lifting a man (weight = 868 N) from a capsized boat by means of a cable and harness. (a) What is the tension in the cable when the man is given an initial upward acceleration of 1.83 m/s2? (b) What is the tension during the remainder of the rescue when ... 
Physics
A rescue helicopter is lifting a man (weight = 868 N) from a capsized boat by means of a cable and harness. (a) What is the tension in the cable when the man is given an initial upward acceleration of 1.83 m/s2? (b) What is the tension during the remainder of the rescue when ... 
Physics
A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 10.1 m/s at an angle of 62.4° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is ... 
Physics
Kate (m = 50 kg) is swinging on a tire tied by a (light) rope (L = 3 m) to a tree limb. Her twin Ashley comes along and squeezes into the tire with her. Assume that at all times the centre of mass of the person(s) riding the tire is at the end of the rope. a) What was the ... 
PLEASE!!
someone please help 
someone help me PLEASE
Help me please! 
Algebra
Please help 1.8  3.9= A. 2.1 B. 5.7 C. 2.1 D. 5.7****** Please help 7+5= A. 2*** B. 12 C. 12 D. 2 
physics please help!!
Hung vertically, a massless spring extends by 3.00 cm when a mass of 992.0 g is attached to its lower end. The same mass and spring are then placed apart on a table. The spring is fixed in place and then the mass is given a velocity of 0.800 m/s towards the spring. a) What is ... 
physics
A uniform electric field of magnitude 250 V/m is directed in the positive x direction. A +12.0ìC charge moves from the origin to the point (x, y) = (20.0 cm, 50.0 cm). (a) What is the change in the potential energy of the charge–field system? (b) Through what potential ... 
physics
German silver wire has a crosssectional area of 2.047 x 10^3 cm^2. How many meters are needed to make a resistance of 100 (omega)? I can't find the resistivity of German silver wire. I've googled a few places, but each one gives me a different number. Can you please tell me ... 
Physics Elena please help!
In a Broadway performance an 80.0 kg actor swings from a 2.05 m long cable that is horizontal when he starts. At the bottom of his arc he picks up his 47.0 kg costar in an inelastic collision. (a) What is the velocity of the swinging actor just before picking up the costar? (b... 
Physics Elena please help!
In a Broadway performance an 80.0 kg actor swings from a 2.05 m long cable that is horizontal when he starts. At the bottom of his arc he picks up his 47.0 kg costar in an inelastic collision. (a) What is the velocity of the swinging actor just before picking up the costar? (b... 
physics, please help
A 63.8 kg block of silver is at initially at 107 C. 1.0 kg of ice at its freezing point is placed onto the block to cool it. As the ice melts, the water is free to flow off (so that the water never increases in temperature). After all the ice melts, what is the final ... 
Science
I need help please. I'm really clueless of what the answer is. The theory of demographic transition is based on the idea that industrial development causes ________ and ___________ progress that affect population growth rates. [I really have no clue what's the two missing ... 
Socials
factors which were responsible for the growing wealth and prosperity of England in the 17th century were: defeat of Spanish Armada building of colonies trade with the colonies agricultural revolution technology government please tell me if this is right and please list ... 
English
Thank you very much for helping me. Can you please check these last two sentences, please? 1)Pamela’s father believes that a girl’s beauty should be evaluated on the basis of virtue and goodness . It should therefore not be confused with vanity or prettiness. 2) She was so... 
PSYDAG Statistics ( no computation)help please
Hi first what are statistical tools? What are statistical procedures? can you give an example of each and a brief definition? next Our assignment is to look for 3 very short/short (as much as possible please)journal articles about psychology or anthropology or social ... 
Math
Help please... some diff equation prbolems... 1.) Transform 2xdy  y(x+1)dx + 6y^3dx = 0 into a Bernoulli Equation. 2.) The equation of the tangent line of the onefamily of curve x^2 + y^2 = 25 at P(4, 3) is_______ 3.) The complete solution of 2x^3 dy = y (y^2 + 3x^2) ... 
Chem! Please helpppp!!!!!
Consider the evaporation of methanol at 25.0 c: CH3OH(l) CH3OH(g) I figured out that Delta G is 4.3 kJ. Find the Delta G at 25 C under the following conditions: Pressure of CH3OH= 157mmHg, 103mmHg, 14mmHg thanks! please explain 
Math Help
in probability why are tree diagrams more useful than to use tables ?? please explain to me in a paragraph so i understand completely and could you please show me an example where i would have to use the tree diagram, and why i couldn't use a table??? 
Math
at a track meet with 200 participants, 45 participate in jumping event, 1/3 of these jumpers are female, and 1/2 of the the total participants are female. What is the probability that a participant chosen at random is a jumper, given that the person is a female? Please please ... 
Science
Lack of oxygen in a pond may be a limiting factor. True or False? Please reply ASAP, thanks Lack of oxygen in a pond may be a limiting factor. True or False? Please reply ASAP, thanks Please only post your questions once. Repeating posts will not get a quicker response. In ... 
Math2[Please Check Again]
Problem: a^29 a^23a  *  a^2 a^2+a12 What I Got: 33a  a4 *Please Check My Work.* Nope. factor the denominator to a^2(a+4)(a3) The last factor divides out in the numerattor (second term factors to a(a3). The a in the numerator reduces the denominaor a^2 ... 
Statistics (Please Please Answer!)
i bought a vegetable seed pocket containing 20 seeds. A manufacturer label on the pocket said that the seeds have at least 90% germination rate. I planted all 20 seeds following their instructions in preparing soil and water. They told me if an "unlikely event" happens, return... 
physics
A 2.10 mol sample of oxygen gas is confined to a 5.10 L vessel at a pressure of 7.99 atm. Find the average translational kinetic energy of an oxygen molecule under these conditions in (j/mol) When i was working this out i tried using pv=nrt to find the temperature which i got ... 
physics
1)Under ideal conditions, if 300 J of work are required tolift a mass to a certain height, the same mass should provide ___ J to do work as it falls back to Earth. Can you please comment as to whether my answer of 300 J is correct? 2)___ is conserved during an inelastic ... 
physics(please help...very urgent.....)
A ball is hit at an angle of 36 degrees to the horizontal from 14 feet above the ground. If it hits the ground 26 feet away (in horizontal distance), what was the initial velocity? Assume there is no air resistance. i have posted the same question earlier and i got some steps ... 
Physics
Know matter how i work it out, i keep getting the wrong answers. please help!!! i only have two more submissions before it closes on me. A sample of blood is placed in a centrifuge of radius 14.0 cm. The mass of a red blood cell is 3.0 ✕ 10−16 kg, and the ... 
Physics Help!
The Fly wheel has a small magnet of mass M mounted on it. Each time the magnet passes the coil, a voltage pulse is generated , which is passes to the c.r.o the display of the c.r.o is 10 cm wide . The flywheel is rotating at a rate of about 3000 revolutions per minute . Which ... 
Physics
Two steel blocks are at rest on a frictionless horizontal surface. Block X has a mas of 3.0 kg ans is attacthed by means of a light taut string to block Y that has a mass of 12 kg. A force of 45 N (E) is applied to block x. Calculate the force block Y exerts on block x. I don'... 
Math
Out of a group of 600 students taking computer,mathematics or physics,there is no student taking both computer and mathematics.Every student takes computer or mathematics.150 take physics and mathematics and 250 take only one of the subjects.Find 1) the number of students ... 
Math
Out of a group of 600 students taking computer,mathematics or physics,there is no student taking both computer and mathematics.Every student takes computer or mathematics.150 takes physics and mathematics and 250 take only one of the subjects.Find 1) the number of students ... 
physics
A person bounces up and down on a trampoline, while always staying in contact with it. The motion is simple harmonic motion, and it takes 2.82 s to complete one cycle. The height of each bounce above the equilibrium position is 40.8 cm. Determine (a) the amplitude and (b) the ... 
Physics(Please respond)
1) A roller coaster (398 kg) moves from A (3.82 m above the ground) to B (29.4 m above the ground). Two nonconservative forces are present: friction does 1.82 x 104 J of work on the car, and a chain mechanism does +5.49 x 10^4 J of work to help the car up a long climb. What ... 
PLEASE HELP PHYSICS!
Two toy ducks attached to each other by a string, are being pulled by a child. The front duck is m1= 5.0 kg and the back duck is m2= 2.0 kg. The happy guy pulls them with a force of 10 N and friction exists. The toys are moving with constant velocity. A) if the coefficient of ... 
Physics
Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes over a frictionless, massless pulley. Block B hangs down vertically. When the two blocks are released, Block B accelerates downward at a rate of 2.030 m/s2. What is the ... 
Management 330
Please can you help me put an Organizing Paper together: 1050 Word paper  Evaluate the function of management at Delta Airlines as it relates to Physical assets, Human resources and Knowledge. Please cite at least two references 
geography (agriculture)
I have an A.P human geography test tomorrow and i can not figure out what some of these words mean. can somebody please help?? thank you so much. i need help on who carl saur is, mediterranean agriculture, transhumance, pastoral nomadism, and the green revolution.. please help... 
bobpursley, please help me understand
I asked "Show mathematically that to produce an image that is the same size as the object in a concave mirror, the object needs to be at twice the focal length from the mirror." and you answered: "1/o + 1/o=1/f 1/2f + 1/i=1/f 1/i=1/2f i=2f M=di/do= 2f/2f= 1 check my thinking... 
Accounting
what are the outside factors upon which the conclusions drawn from financial statements and financial statement analysis are reliant? Please help!! I'm trying to finish a VERY long accounting paper and got stuck with this question, have no clue, someone please help!! Thanks 
3rd grade science
1)list five ways germs were spread in pioneer days. 2)list the names of the various pioneer diseases.star the ones that make people sick today in north America. Can you please help me with my homework please. 
spanish
please help me , i neeed help writing this in Spanish: My classes are very difficult, and i don't enjoy them mi (mis?) clases muy difícil, y yo no disfrutar de i know this is a messed up sentence, but i'm just giving it a try. can someone please show me how to write this ... 
Chemistry130
Can someone please help me with this question? Propose a possible explanation as to why this trend exists. What characteristics of the elements lead to this trend? We are discussing Ionization energy! She's asking for characteristics like subatomic attractions, electron ... 
PreAlgebra
Please help me. Thanks It's Pythagorean Theorem: A boot leaves port and travels 18 miles north and 15 miles east. How far from port is the boat? I have drawn a picture, 15² + 18² = c² ²= squared. Thanks... meh please someone help mewith this, thanks. 
college
How important is cultural context in understanding an individual's personality? (When responding please consider: How much variability may exist in people within a culture and is it possible to modify an individual's personality through manipulation of their environmentif so ... 
calculus
Please help with this very complicated question! Using 3(x3)(x^26x+23)^1/2, as the chain rule fifferentiation of f(x)=(x^26x+23). Please explain how I find the general solution to dy/dx= 2/27(x3)SQUARE ROOT BEGINS (x^26x+23)/y SQUARE ROOT ENDS (y>0), giving answer in ... 
math
Suppose you plan to make a box that will hold exactly 40 oneinch cubes. what are some demensions of all the possible boxes you can make? I thought of 2 but i can't think of anymore. Here's what I have, are they right? L= 10 W= 2 H= 2 L= 5 W= 4 H= 2 Can you please think of ... 
english
I have to write a short paper on Shakespeare Twelfth NightAct 5 scene 1 lines 248262. But what we have to do is to translate those lines into a different "lingo" dialect but I don't even know how to get started. Can someone please help? PLEASE!!!!!!!!!!!!!!!!!!!! 
Please Help!!!!!!
an engineer designs a satellite dish with a parabolic cross section. The dish is 15 ft wide at the opening and the focus is placed 4 ft from the vertex. find an equation of the parabola. I know how to work this problem, but how do I know that I use the equation y^2 = 4px ... 
math
can someone please help me with this question. Given the funtion f(x)= 3x9 a. find the rate of change between the two stated values for x: 7 to 8 b. find the equation of a secant line containing the given points: (7,f(7)) and (8,f(8)) I think I have (a)answered, just need ... 
calculus
I have two questions, please help. 1. Uss completing the square to describe the graph of the following function. Support your answers graphically. f(x)= 2x^2+4x+7 please show work. 2. Can someone help me to graph this function? f(x)=x^26x+5 Then find the a. vertex b. axis of... 
Math urgent help please!!
You have 500 cm² of material available to cover different shapes. what is the maximum volume of each object that you could make with this amount of material? A.) a cube B.) a sphere I've been stuck on this for so long, please show me how to do this step by step, thanks :) 
Science Please help Ms. Sue!!!
Which of the following does not reduce water pollution? a) cleaning up oil and gasoline spills. b) reducing pollutants such as pesticides and fertilizers. c) increasing the use of gasoline.*** d) properly treating waste water Can you please check my answer? 
Math scientific expressions
Can someone please explain to me what exactly scientific notations are and what I need to know to solve them properly?? Also, provide worked out examples and explain the steps you followed. PLEASE, no joke responses... I just want a better understanding. 
algebra math, 8th grade
If point A is located at (0, 8) and B is located at (4, 5), what is the distance between them? A. 5 B. 6 C. 7 D. 8 I know I don't usually ask for just the answer (I generally give what I got) but this was due on the 6th! I was in the hospital for pneumonia, and I didn't ... 
English Grade 11 College
I have trouble understanding of this article and how to answer the questions given. I just started new to school in Toronto; I was living in Turkey for Years So I do please to take your time to look and examine my homework. I greatly appreciate your patience and time and ... 
Physics
Question: A car is on a ramp 100m from the bottom of the ramp (angle of incline=30 degrees): a. If the potential energy of the car is 80902 J, how much does the car weigh? b. What is the KE half way down the ramp? c. What speed is the car moving at the bottom of the ramp? ... 
Physics
A molecule consists of two atoms. The atoms have masses of 20 u and 10 u and are 1.08 *10^10 m apart. How far from the first atom is the center of mass of the molecule? Can someone help please I tried: (20u*(1.08 *10^10m)) + (10u*(1.08 *10^10))/ (20u+10u) and just got 1.08... 
Physics please help!!
A mass M is initially at rest on a horizontal surface, μs=0.30 and μk=0.20 . A horizontal string then pulls M with a tension T. Forces below are magnitudes. Indicate if each statement is correct or incorrect If M does not accelerate, then T ≤ μsN M will ... 
Physics please help!!
A mass M is initially at rest on a horizontal surface, μs=0.30 and μk=0.20 . A horizontal string then pulls M with a tension T. Forces below are magnitudes. Indicate if each statement is correct or incorrect If M does not accelerate, then T ≤ μsN M will ... 
physics please help
a 10.0g marble rolls to the left with a velocity of magnitude 0.400 m.s^1 on a smooth, level surface and makes a headon collision with a larger 30.0g marble rolling to right with a velocity of magnitude 0.100 m.s^1. If the collision is perfectly elastic,find the velocity ... 
physics
A basketball explodes into three separate pieces. Two pieces of equal mass shoot off at 20.3 m/s, one travelling to the south and one to the west, perpendicular to each other. The third piece has a mass 4 times the size of one of the other pieces. What is the speed of the ... 
social studies
Please help me answer these questions, as I have no idea about it. 1) Why do naturalist movements tend to be fractured (why don't they work out...) 2) How does this affect the postcolonial administration of successor states? Please help answer, or provide some websites which ... 
anyone solve it....
Question 1 Describe the following descriptors. Give their type and the value of all their fields: i.dd 01234567h, 789abcdeh ii.dd 30405060h, 70809010h Please remember these things, especially #s 1 and 2: 1. This is a homework help website; please put your subject (math, ... 
physicshelp please........
The momentum and the kinetic energy of particle A is eight times and nine times the momentum and the kinetic energy of particle B, respectively. What is the ratio of the mass of particle A to that of particle B? 
Physics
The mass of the sign shown is 28.5 kg. Find the weight supported by (a) the left support and (b) the right support. Between the left and right support is 0.900m and from the right support to the end of the sign is 0.300m.    > (0.900m... 
Physics(semiconductors)
Is electron and hole flow the same in a diode?is the following explanation correct .if not then please provide the correct one When diode is forward biased,the forward current is the sum of electron current and hole current.this current is diffusion current.the electron ... 
please check my answer
please check my answer thanks :) You are the manager of The Candle Shop using the FIFO method of inventory pricing, what is the dollar value of the ending inventory if there were 17,000 units on hand Dec 31 Show all of your work Jan 1 5,000 @ $0.89 Feb15 10,000 @ $0.69 April ... 
Math
Whats a consisnent. like suppose 2,3,6,9,8 Can someone help please? Can someone help please: What are conssitent numbers in math? i need help on my math its algebra 
Algebra one help, please.
Determine which lines, if any, are parrell or perpindicular linea= y=4x line B= y=1/4x line c= y= 4x1 I think line B and A are parrell. Am I correct? Please help me, thank you. 
geometry
8. iN triangle ABC, a point D is on AC so that AB=AD. ANGLE ABC  ANGLE ACB = 30. IND ANGLE CBD. PLEASE TELL ME WHAT TO DO. I BEG YOU. PLEASE 
Please help
A rectangular picture frame has a perimeter of 58 inches. The height of the frame is 18 inches. What is the width of the frame? Please help show work and help answer thanks 
physics please help
A 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed, 1.84 m/s. What is the average power of the elevator motor during this period? What is the power of the elevator motor during an upward cruise with ... 
Physics
The potetial energy of a spring is 0.25 J when it is compressed 0.05m to the left of the equilibrium position. At this point it comes to its leftmost position. What is its kinetic energy when it returns to its equilibrium point? a. zero b. 0.25 J and the object is moving to ... 
Physicsplease help!!
A hydrogen atom, when vigorously perturbed, can emit light with a frequency of 6.16·1014 Hz. When the same light from hydrogen atoms in a distant galaxy is observed on earth, the frequency is 5.76·1014 Hz. Calculate the speed at which the galaxy is receding from the earth (...