physics please HELP !
129,881 results, page 80

mathplease I really need help!!!!!
Consider the functions f(x)=2x+8/x+6; g(x)=6x8/2x Find f(g(x)) Find g(f(x)) Deterrmine if f and g are inverses of each other. a. What is f(g(x))? Give any values of x that need to be excluded from f(g(x)) x=? b. what is g(f(x))? ive any values of x that neeedd to be excluded... 
History (grade 5) please help"
explain the connection between european exploration of north and south amwerica and international trade? is there any connections to begin with? Is it, South Americais geographically bordered on the west by the pacific ocean and wast by countries including North Amserica. In ... 
Algebra..Heeelp please!
Need assistance on this word problem... Singer I.M. Great publicly promised each of her fans an autographed photo of herself. The response was bigger than expected: all 220,000,000 people in the U.S. wrote for a picture(even her own brother). Calculate the number of hours I.M ... 
history
can i please get some help on this question, what effect did the Bakke decision have on affirmative action? a. it legalized racial quotas for admission to medical schools b. it encouraged African Americans to apply to medical schools c. it signaled the start of a backlash ... 
business
Could you please help me re write the sentences below. Media convergence is the merging of mass communications outlets such as television, radio and the Internet along with portable and interactive technologies though various digital presentation platforms. Media convergence ... 
physics
Snowballs are thrown with a speed of 12.5 m/s from a roof 7.8 m above the ground. Snowball A is thrown straight downward; snowball B is thrown in a direction 16° above the horizontal. (a) Is the landing speed of snowball A greater than, less than, or the same as the landing ... 
Physics
A house with its own well has a pump in the basement with an output pipe of inner radius 6.4 mm. Assume that the pump can maintain a gauge pressure of 420 kPa in the output pipe. A showerhead on the second floor (7.5 m above the pump's output pipe) has 38 holes, each of radius... 
Physics
A house with its own well has a pump in the basement with an output pipe of inner radius 6.4 mm. Assume that the pump can maintain a gauge pressure of 420 kPa in the output pipe. A showerhead on the second floor (7.5 m above the pump's output pipe) has 38 holes, each of radius... 
PHYSICS
A physics book slides off a horizontal table top with a speed of 1.15 . It strikes the floor after a time of 0.360 . Ignore air resistance.Find the horizontal component of the book's velocity just before the book reaches the floor. 
physics
Two ﬁrecrackers explode at the same place in a rest frame with a time separation of 11 s in that frame. Find the time between explosions according to classical physics, as measured in a framemoving with a speed 0.7 c with respect to the rest frame. Answer in units of s 
physics
In physics lab experiment, a compressed spring launches a 20g metal ball at a 30 degrees angle. Compressed the 20cm causes the ball to hit the floor 1.5m below the point at which it leaves the spring after travelling 5.0m horizontal. What is the spring constant? 
physics
In physics lab experiment, a compressed spring launches a 20g metal ball at a 30 degrees angle. Compressed the 20cm causes the ball to hit the floor 1.5m below the point at which it leaves the spring after travelling 5.0m horizontal. What is the spring constant? 
physics
what is the physics answer to A 25.0 kg mortar shell is launched from level ground at 38.0m/s at 60 Degrees above the horizontal. At the top of its trajectory, the shell explodes into three pieces. A 10.0 kg piece flies forward at 38.0 m/s. Another 10.0 kg piece flies straight... 
math please help me!
Estimate the instantaneous rate of change of the function f(x) = x ln x at x = 1 and at x = 3. (Use h = 0.1, 0.01, 0.001, 0.0001, and so on. Round your answers to four decimal places.) f '(1) = f '(3) = What do these values suggest about the concavity of the graph ... 
physics
A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 80.8 m/s at ground level. Its engines then fire and it accelerates upward at 3.90 m/s2 until it reaches an altitude of 920 m. At that point its engines fail, and the rocket goes into ... 
As Physics
Use the equations below: P=mv Ek=1/2mv^2 2) A linear air track can be used to investigate collisions. Two trolleys or â€œglidersâ€ are supported on a cushion of air. A glider of mass 0.30kg is stationary in the middle of the track. A second glider of mass 0.25kg and ... 
SOCIAL STUDIES
the achievevment I have outlined for Luther is : that he was the !st one to begin a reformation. He drew list of arguements against church practises and nailed them to door of church in German city of Wittenberg. The list which became known as Luther's Ninetyfive Theses, was ... 
Chemistry help please!
Suppose K= 4.5x10^3 at a certain temperature for the reaction : PCl5 <> PCl3+ Cl3, what must be the concentration of Cl2 under these conditions? Chromate ion, Cro4^2, is used as a qualitative test for lead(II) ion, forming a birght yello precipitate of lead ... 
Spanish1 help
Fill in the blank with the correct conjugation of the verb in parentheses. ¿(Trabajar) __________ tú por la tarde? When entering your answers for fill in the blank and essay questions, please be sure to use accent marks and/or correct punctuation to avoid your answer being ... 
IT computer memory
Can someone check this for me please.. 18 MB of data are to be transmitted over a a megabyte per second connection. How long should the complete transaction take, to the nearest 0.1s. Size of file / data rate so, 18,874,368 bytes / 4,000,000 = 4.718592 = 4.7 is that correct a ... 
Science(Energy)
Which of the following is the best example of transforming electromagnetic energy into thermal energy? A. when trees absorb sunlight for photosynthesis B. when the interior of a car absorbs sunlight and warms up C. when a solar panel absorbs sunlight to make electricity D. ... 
Physics help please
suppose you have 2 cars, and the larger one is twice as massive as the smaller one. If you and a friend push on them so that their accelerations are equal, how must the forces applied to the cars compare? a. the force on the larger car is equal to that on the smaller car. b. ... 
Physics 12
I've been doing alot of extra questions for physics lately, and these four are still giving me trouble. Please help me out and help me solve them, including Free Body Diagrams if possible. 1. If a curve with a radius of 60m is properly banked for a car travelling at 60km/hr, ... 
Physics
Hi Guys! Need help with this physics problem, I have no idea how to set it up or how to visualize it but would appreciate any help. Instructions for finding a buried treasure include the following: Go 80 paces at 235°, turn to 130° and walk 115 paces, then travel 100 paces ... 
Physics Elena please help!
A digital audio compact disc carries data along a continuous spiral track from the inner circumference of the disc to the outside edge. Each bit occupies 0.60 mm of the track. A CD player turns the disc to carry the track counterclockwise above a lens at a constant speed of 1... 
MATHMS.SUE PLEASE HELP
ok there these 3 kids who sold cookies and here are there rates and if their continuing a the rate if they sold the cookies at 2.00 a piece how many days will it take to make 320.00 at their rates? Maria 39cookies/13days Stephen 42cookies/7days Aisha 21cookies / 3 days I don't... 
chemistry Please who helps me stpe by step
2gm of mixture hydrated sodium carbonate na2c03 /OH20 and sodium bicarbonate was dissolved in water and made up to 250cc. 25cc of this solution was titrated, using methyl orange as indicator and 22.5cc of 0.087N hcl were required for neutralization. Calculate the percentage of... 
Physics
A football is kicked from the ground at 27 m/s at an angle of 42 degrees above the horizontal (ground). No one gets in the way until after it hits the ground. Use the value g=9.8 m/s^2. Assuming that the ground is level and that there is negligible air resistance, wind, etc. a... 
Physics
A football is kicked from the ground at 27 m/s at an angle of 42 degrees above the horizontal (ground). No one gets in the way until after it hits the ground. Use the value g=9.8 m/s^2. Assuming that the ground is level and that there is negligible air resistance, wind, etc. a... 
Maths Help !!!!!!!!!!!!
Hello I'm in grade 9 and i still get confused with the expressions and how to make then in maths although i'm queit very bright ! Any tips on this please thanx Practice. We learn by experience. You may want to buy an extra workbook at the bookstore, which has answers so you ... 
Life
This is my second year in college,I've gotten B's during my freshman year and now I basically failed one of my major required course. I don't know what to do. Honestly I went into this for the potential money and to please my parents. I know people who graduated with ... 
Science
Please help me with my homework! OK, so there is this girl conducting an experiment to see whether a solution (juice) will take longer to freeze than a substance )pure water).She predicts that water will take less to freeze. So there is this article that goes on and on to list... 
Physics!!!Please Help!
Steam at 100 ¡ãC is mixed with 166.4 g of ice at ¨C32.8 ¡ãC, in a thermally insulated container, to produce water at 44.6 ¡ãC. Ignore any heat absorption by the container. Cwater = 4186. J/(kg ¡ãC) Cice = 2090. J/(kg ¡ãC) Lf,water = 3.33 ¡Á 105 J/kg Lv,water... 
Child Development Question Plz Help Me
Please fill in the blank with the appropriate response. ____________ is an effect of punishment, not discipline. A. Bolstered selfesteem B. Promoting a child's ability to think C. Conformity to the adult's behavioral expectations D. Gradual selfcontrol Would the correct ... 
government
I just need some ideas please. I have to trace a policy example through the 3 models of federalism, dual, cooperative and creative. I have done quite bit of research and am having trouble finding a policy that I will be able to trace through the 3 models and actually ... 
english
how do i write a thesis statement ? Like teachers always say "What's the Big Idea" or "Universal Idea" and I always think I have it but I never get it right. & I'm embarrassed to say that I am a Senior in High School asking this question __ I have to write a thesis for "The ... 
chemistry
Volume of Na2S2O3(aq) required? final burette reading trial1= 45.00 trial2= 44.27 trial3= 45.28 initial burette reading trial1= 0.52 trial2= 1.22 trial3= 2.33 volume of Na2S2O3 used in each trial? average of the two volumes agreeing within 0.10mL? can anyone help me with this ... 
physics
A film of oil that has an index of refraction equalto 1.45 floats on water (n = 1.33). When illuminated by white light at normal incidence, light of wavelengths 629 nm and 449 nm is predominant in the reflected light. Determine the thickness of the oil film. Wouldn't the ... 
Physics Urgent please help
A spring of negligible mass, spring constant k = 82 N/m, and natural length l = 1.2 m is hanging vertically. This is shown in the left side where the spring is neither stretched nor compressed. In the central one, a block of mass M = 5 kg is attached to the free end. When ... 
Physics
I don't understand this statement, could you explain it to me please? Discuss the statement: In the USCS system of measurement the pound (lb.) is a unit of force while in the SI system of measurement the kilogram (kg) is a unit of mass. Why is the lb a unit of force? Why does ... 
chemistry help please!
For my year 7 homework i have had to write a poster about pyhsical and chemical changes when a candle is alight. We have had to use certain vocabulary and one is evaporation. I know what this term means but don't know what evaporates when a candle is alight? Can someone please... 
7th grade math
The hypotenuse of a right triangle is 10 centimeters and one of the legs is 6 centimeters. the leg to the very left is 6 cm and the leg to the top is 10 cm. the bottom leg has a x for unknown. My teacher gave me the answer since I couldn't figure it out and she told me that it... 
Physics
A pair of blocks of the mass M =30.7 kg, and 2 M are dragged over a rough, horizontal surface by two constant forces of magnitude F=98.0 N. The angle α = 22.7 ° . The blocks are displaced 7.5 m, and the coefficient of kinetic friction is 0.258. *for the normal force of ... 
To Kill A MockingBird ..please help.
Hi, in to Kill A mockingbird , can you please help me out, and tell me any significant events that happen in CHAPTER 23? I am suppose to explain why the events , important speeches in Chapter 23 are important. All I can really think of is that Attticus decision of that ... 
Need some info. please
Everyone differs slightly in what they consider attractive or beautiful. Do you believe certain attributes are universally attractive? Do you believe one’s sense of beauty is intrinsic or learned? What influence do the media and one’s peers have on the concept of beauty? ... 
algebra please ck.
joe wants to spend 70. dollars at most and has 60 cu inches of space left in his soldier's care package. candy costs $7 and takes up 3 cu inch of space phone cards cost $5. and take up 15 cu in. of space. Is this correct? if not please change it or tell me how ??? thanks ann 1... 
physics
A(n) 775 N man stands in the middle of a frozen pond of radius 11.2 m. He is un able to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 1.3 kg physics textbook horizontally toward the north shore, ... 
Math
If the scale factor from a small figure to a large figure is given as a percent, how can you find the side lengths of the large figure from the side lengths of the small figure? PLEASE HELP ME!!! PLEASE HELP!!!!! THIS IS SOOOOO CONFUSING AND MY TEACHER NEVER REALLY EXPLAINED ... 
Complex Fraction!! Help please!!!
Simplify COmplex Fraction: x1  x3  1 4    x^2x6 x+2 Please Help!! 
physics
Help me solve this physics homework: in sense we all have kinetic energy,even when we are standing still.the earth with a radius of 6.37*10power6 m,rotates about its axis once a day.ignoring the earths rotation about the sun,what is the K.E of a 50Kg man standing on the ... 
Physics
Superman, who likes physics, dangles his watch from a thin piece of string while he is taking off from ground horizontally at a constant acceleration a. He notices that the string makes an angle of θ with respect to the vertical. After 18 seconds, his speed is v=116m/s. ... 
HELP ME!!
What qualities of an oral presentation are most important to you as an audience member? Explain your answer (Broken Link Removed) http://www.tau.ac.il/~smiriam/mugbar/criteria2.htm http://www.ncsu.edu/midlink/rub.pres.html Please note that we don't do students' homework for ... 
found of tech
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
At the end of the semester, you are loading your gear into a van to go home. In loading the van, you can either lift a 45.0kg crate straight up(method 1) or push it up a 3.00mlong ramp that is inclined at an angle above the horizontal (method 2).In both methods, the crate ... 
PHYSICS PLEASE HELP
A particle travels counterclockwise around the origin at constant speed in a circular path that has a diameter of 2.50 m, going around twice per second. Point Q is on the path halfway between points P and R, which lie on the x axis and the y axis, respectively. State the ... 
As physics
In a hockey match a hockey ball is hit 18m from the front of the goal. The ball leaves the hockey stick with initial velocity v at angle theta to the horizontal ground. The ball passes over the goal at a maximum height of 2.0m. The initial vertical component of the velocity of... 
Physics  Please Check Answers ASAP
Please check these over and see if any are incorrect? 1. The units of speed are: a) m/s > my answer b) m/s^2 and direction c) N d) m/s and direction 2. Which of Newton's Laws says you cannot touch anything without being touched? a) 4th b) 2nd c) 1st d) 3rd > my ... 
Math, rational inequalities
Please can someone help me solve this problem? 2/x + 6/x1 less than or = 5 8/x 1 <= 5 Now add 1 to each side 8/x <= 4 so x must be < 0 Multiply both sides by x (a negative number). This means you have to change the direction of the > 8 >= 4x Divide both ... 
PreAlgebra
A circular pond 20 m in diameter is surrounded by a gravel path 5 m wide. The path is to be replaced by a brick walk costing $30 per square meter. How much will the walk cost? i need to teach this to my brother, but i'm stuck on it myself. please show me how this would be ... 
Physics
After a completely inelastic collision two objects of the same mass and the same initial speed are found to move away together at 1/2 thier initial speed. Find the angle bewteen the initial velocitie of the objects? Can you please show me the step to solve this problem? I am ... 
Physics
I have no idea on how to do either part of these questions please help (part 1 of 2) To move a refrigerator of mass 110 kg into a house, a mover puts it on a dolly and covers the steps leading into the house with a wooden plank acting as a ramp. The plank is 8.8 m long and ... 
physics
A 750.0 N man, carrying a 1.9 kg physics textbook, stands at the center of a frozen pond of radius 9.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome his difficulty, he throws his textbook horizontally at a ... 
physics
A 750.0 N man, carrying a 1.9 kg physics textbook, stands at the center of a frozen pond of radius 9.0 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome his difficulty, he throws his textbook horizontally at a ... 
Geometry
ABGF is a square with half the perimeter of square ACDE. GD = 4in. Find the area of the shaded region. Please help me work this problem out I am stuck. It's a square and in the top right corner there in another square inside it that is 1/4 the size of the big one. From that ... 
Discrete Math
There are 150 students taking Discrete Mathematics II, Calculus II, and Physics I courses. Of these 51 are taking Discrete Mathematics II, 111 are taking Calculus II, and 63 are taking Physics I. There are 41 taking Discrete Mathematics II and Calculus II, 32 students taking ... 
english
which of the following events is an example of situational irony in "R.M.S. Titanic"? a. although the Californian is the ship closest to the Titanic, it doesn not come to the Ttanic's rescue b. when the rew realizses the extent of the damage to the Titanic, they send out a ... 
economics
Trucking giant Yellow Corp agreed to purchase rival Roadway for $ 133.67 million in order to reduce socalled backoffice costs (e.g., payroll and insurance) by $22.65 million per year. If the savings were realized as planned, what would be the annual rate of return on the ... 
Physics Tough question!
A pond has the shape of an ice cream cone with the tip slices off and has a depth of 5.00m. The atmospheric pressure above the pond is 1.01 *10^5 Pa. The circular top surface (radius = R2) and circular bottum (radis = R1) of the pond are both parrallel to the ground. The angle... 
physics (super hard)
a carnival ride is designed with seats that carry two people weighing 910.0 N each. the seats itself weights 630 N.each seat is connected to central spindle by one chain and rotates on a radios of 6.07 meters. the ride is designed to rotate fast enough that the seats swing out... 
physics
In a physics lab experiment, a spring clamped to the table shoots a 22 g ball horizontally. When the spring is compressed 22 cm, the ball travels horizontally 5.2 m and lands on the floor 1.3 m below the point at which it left the spring. What is the spring constant? 
physics
In a physics lab experiment, a spring clamped to the table shoots a 22 g ball horizontally. When the spring is compressed 22 cm, the ball travels horizontally 5.2 m and lands on the floor 1.3 m below the point at which it left the spring. What is the spring constant? 
Physics
A hiker sees a lightning flash, 13.0 s later he hears the sound of the thunder. Recalling from his study of physics that the speed of sound in air is approximately 1/3 km/s he estimates that the distance to where the lightning flash occurred is approximately a. 4.33 km b. 9.33... 
Physics
In a physics lab experiment, a spring clamped to the table shoots a 18 g ball horizontally. When the spring is compressed 20 cm, the ball travels horizontally 4.9 m and lands on the floor 1.3 m below the point at which it left the spring. What is the spring constant? 
Physics
In a physics lab experiment, a spring clamped to the table shoots a 18 g ball horizontally. When the spring is compressed 20 cm, the ball travels horizontally 4.9 m and lands on the floor 1.3 m below the point at which it left the spring. What is the spring constant? 
Physics
The gravitational force of attraction between two students sitting at their desks in physics class is 2.35 ✕ 108 N. If one student has a mass of 46.2 kg and the other student has a mass of 62.6 kg, how far apart are the students sitting? 
Physics
The gravitational force of attraction between two students sitting at their desks in physics class is 2.23 ✕ 108 N. If one student has a mass of 52.0 kg and the other student has a mass of 57.4 kg, how far apart are the students sitting? 
physics
A backpack full of books weighing 43.0 N rests on a table in a physics laboratory classroom. A spring with a force constant of 150 N/m is attached to the backpack and pulled horizontally, as indicated in the figure. If the spring stretches by 2.30 cm, what is the coefficient ... 
maths
Can someone please help me with solving this equation (I don't know how to do it with the fractions) 1/3 x1^2/3 . x2^2/3  2/3 x1^1/3 . x2^1/3 how do I cancel out some of the terms and reduce it down so that Im left with x2 on top and x1 on bottom?? And ... 
chemistry
6.2(+_ 0.2)  4.1 (+_ 0.1 ) + ? [6.2( +_ 0.2)  4.1(+_ 0.1)] : 9.43(+_0.05) find absolut uncertainty and relative uncertainty. PLEASE HELP:I solved them and got the exact absolute uncertainty like the answer key, but I didn't get right answer of relative unsertainty, my answer... 
Chemistry
Can you please someone check my answer for me? I don't know how to start thses answer. Chemistry is not my things. Please give me answers. :( a)Determine the number of grams in 0.750 moles of the compound Iron(II)phosphate: Fe3(PO4)2. Answer: ? b)How many atoms of iron are in ... 
accounting..please help
can you help me please for this solving problem below... problem: A, B and C shared the profit of Rs. 9,00,000 in the ratio of 2:2:1 without providing for interest on B’s loan, B granted a loan of Rs. 4,00,000 in the beginning of accounting year. Where as the partnership ... 
English
1. Stop at the red light. 2. Stop on the red light. (Which preposition should we use?) 3. Turn slightly right. 4. This is a oneway street. (Are both grammatical?) 5. Fill it up with regular unleaded, please. 6. Fill her up with regular, please. 7. Fill it up with the unleaded... 
Statistics
A certain disease occurs in 4% of the population. A blood test for this disease shows a false positive 12% of the time. That means a test will show positive given that the person does not have the disease. What is the probability that a person tests positive but does not have ... 
Math
Question: Can the numbers 24, 32, 40 be the lengths of the three sides of a right triangle? Please explain why or why not? My answer: Yes, the numbers 24, 32, 40 can be the lengths of a threesided right triangle because of the Pythagorean theorem (a^2 + b^2 = c^2). Which ... 
Spanish
(I need help checking if I am correct of not, please help me) 1.hand clapping is a characteristic of which musical style? A.flamenco*** B.merengue C.tango D.cumbia 2.which of the following is a popular winter activity? A.cantar B.montar en bicicleta C.patinar D.esquiar*** 3.... 
Spanish: PLEASE HELP
Please help. Thank You. 1. The stemchangers in the current section are similar to those in the previous section except these stemchange "o" to "oe." *A.) true B.) false 2. Of the following, which is not a stemchanging verb? A.) almorzar *B.) comer C.) volver D.) contar E.) ... 
Physics
Can someone help with the following physics problem? This is the only one I'm having trouble solving. Thanks. A 3.6mlong ladder leans against a frictionless wall as shown in the figure below. The coefficient of static friction between the ladder and the floor is 0.30. What ... 
Physics
you lift a 10 N physics book up in the air a distance of 1m at a constant velocity of .5m/s. What is the work done by the weight of the book? a) +10 J b)10 J c) +5 J d)5 J 10 N is the force of gravity and to find work you do this: W=F_g(change in distance) (10N)(1m)= +10J so... 
Physics
A dog is tugging forward on a leas held by a physics student who is standing still. The dog is tugging with a force of 63N. The student estimates the leash to be at an angle of 25 degrees above the ground. What is the tension in the leash? 
physics
Model rocket engines are sized by thrust, thrust duration, and total impulse, among other characteristics. A size C5 model rocket engine has an average thrust of 5.26 N, a fuel mass of 12.7 g, and an initial mass of 25.5 g. The duration of its burn is 1.90 s. (a) What is the ... 
math please help
The speed of a moving sidewalk at an airport is 6 ft/sec. A person can walk 42 ft forward on the moving sidewalk in the same time it takes to walk 10 ft on a nonmoving sidewalk in the opposite direction. At what rate would a person walk on a nonmoving sidewalk? ... 
Nedd Help Please  PreCalc
The coordinates of the five quarter points for y=sin(x) are given below. Use these quarter points to determine the ycoordinates of the quarter points of y=2sin(1/4x). (0,0) (π/2,1) (π,0) (3π/2,−1) (2π,0) (Type ordered pairs. Type exact ... 
Physics
A crate of potatoes of mass 23.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.78 and μk = 0.35. Find the frictional force (magnitude and direction) on the crate if the crate is at rest. I don't understand why I... 
Please helpMath
Please answer these problem for me.Thanks so much. 1. Border's Bookstore ordered 800 art books. On verifying the order, only 160 books were actually received. The percent of the order missing was: 2. The net price equivalent rate of 9/15/18 is: 3. If the net price of a stove ... 
Spanish: Please Help
Please help. Thank You Which is the best answer for this question? ¿Cuántos años tiene Jaime? A.) Tienes quince años. B.) Tengo quince años. C.) Tiene quince años. 22. Las Mañanitas is A.) a special cake eaten at birthday celebrations. B.) the name of the band that is ... 
physics
The physics of an electron moving from one plate to another. An electron acquires 4.2 x 1016 J of kinetic energy when it is accelerated by an electric field from Plate A to Plate B. What is the potential difference between the plates, and which plate is at a higher potential? 
Physics
The gravitational force of attraction between two students sitting at their desks in physics class is 2.34 ✕ 10^8 N. If one student has a mass of 45.0 kg and the other student has a mass of 61.6 kg, how far apart are the students sitting? 
U.S. HistoryPLEASE HELP!!!
i need to find an example of something very specific that relates to the quote "America isn't supposed to have a master, that's not what it was built on. people should be their own master." i thought something to do w/ the frontier in the 1800s, and i found a quote that said ... 
Lang. Arts Ms. Sue
Ms. Sue I don't know if you remember this question, but I got it wrong and I need to know the rule why. I put ...Please come with me, Sarah, and Tom, to pick up Mom's birthday present. He said there is no comma after Tom. I need to know the rule to why you do not put a comma ... 
algebra
can someone please explain "converting to slopeintercept form" to me please? i've watched countless videos on it and i don't understand how to do these problems. all i really need is an explained stepbystep on how to do these types of problems. all of them are usually ...