Sunday

April 20, 2014

April 20, 2014

**Recent Homework Questions About First Aid**

Post a New Question | Current Questions

**Math help**

for all 3 , elimination looks like the easiest way 1. -7x-6y=-21 -x-6y=-3 subtract them to eliminate the y's -6x = -18 x = 3 back into the 2nd: -3-6y=-3 -6y=0 y = 0 ----------> x = 3, y = 0 2. -7x+2y=13 -14x+4y=26 Did you notice that the 2nd equation is simply twice the...
*Saturday, January 25, 2014 at 10:07pm*

**English**

The answer is Chicago. You basically pick the number of letters stated in the fraction. For example, 3/7 of a chicken. The word 'chicken' has 7 letters. So, you pick the first 3 as stated in the fraction. Then, you do the same for other given words too and you end up ...
*Saturday, January 25, 2014 at 10:05pm*

**Calc I**

I'm a little confused about this one, it seems different from the rest of our homework! Could someone give me some hints? Thank you! Find the first and second derivative of the function. Check to see that your answers are reasonable by comparing the graphs of f, f ', ...
*Saturday, January 25, 2014 at 8:34pm*

**physics**

first ball: hf=vi1t-4.9t^2 second ball hf=vi2(t-5)-4.9 (t-5)^2 you know vi1, hf. You do not know t, vi2. in the first equation, solve for t. then, in the second equation, solve for vi2
*Saturday, January 25, 2014 at 6:47pm*

**physics**

using a powerful air gun, a steel ball is shot vertically upward with a velocity of 80 m/s, followed by another shot after 5 seconds. find the initial velocity of the second ball to meet the first ball 150 m from the ground.
*Saturday, January 25, 2014 at 6:41pm*

**ashford**

All of the following are true of what typically occurs when first meeting someone EXCEPT: (Points : 1) First impressions are based mostly on facial appearance. We form our impressions of others within less than a second of meeting them. We form conclusions about a person’...
*Saturday, January 25, 2014 at 6:32pm*

**interpersonal Communications**

All of the following are true of what typically occurs when first meeting someone EXCEPT: (Points : 1) First impressions are based mostly on facial appearance. We form our impressions of others within less than a second of meeting them. We form conclusions about a person’...
*Saturday, January 25, 2014 at 6:30pm*

**English**

I don't agree with any of your answers. The first word is parsimonious.
*Saturday, January 25, 2014 at 6:04pm*

**neiu**

Is there a significant difference between first year post college incomes of graduates from public versus private institutions? Provide the IV, DV, and best method of analysis. (Points : 6)
*Saturday, January 25, 2014 at 4:44pm*

**Math help**

On the first one how did you get -280 and -200?
*Saturday, January 25, 2014 at 3:46pm*

**Math help**

in the second one both 56 and 49 have common factor 7 which we will take advantage of 56 = 7 * 8 49 = 7*7 so use 7*7*8 = 392 56 *7 = 392 so multiply first by 7 49 *8 = 392 so multiply second times 8 I think you can take it from there.
*Saturday, January 25, 2014 at 3:33pm*

**Math help**

we must find a common multiple of something here 15 = 3*5 24 = 3*8 so I guess we could use 3*5*8 = 120 15 * 8 = 120 so multiply first eqn by 8 24 * 5 = 120 so multiply second by 5 - 280 x - 120 y = 0 - 200 x + 120 y = 0 -------------------- add -480 x = 0 so x = 0 and y = 0 ...
*Saturday, January 25, 2014 at 3:29pm*

**History**

1. Malayan traders and settlers: A. brought oranges and rayon to East Asia. B. may have introduced yams and bananas to Africa. C. were the first Khoisan speakers in southern Africa. D. composed just under half of the population of Zanj. im confused between A and B 2. In ...
*Saturday, January 25, 2014 at 2:18pm*

**physics**

Use Steve's result for first part. I forgot to divide by 2.o2
*Saturday, January 25, 2014 at 12:21pm*

**maths Literacy**

practice, practice, practice. You will find many fine expositions on line, and such questions posed here almost always receive prompt attention. First step: carefully review your math text, and follow how they did their examples. It will be at least as clear there as any ...
*Saturday, January 25, 2014 at 11:39am*

**Chemistry**

The gas phase decomposition of dinitrogen pentoxide at 335 K N2O5(g) 2 NO2(g) + ½ O2(g) is first order in N2O5. During one experiment it was found that when the initial concentration of N2O5 was 0.218 M, the concentration of N2O5 dropped to 2.96E-2 M after 282 s had ...
*Friday, January 24, 2014 at 9:35pm*

**AP Chemistry**

I got the first two parts correct but I can't seem to get the last part. The concentration I got for H3O^+ is 1.151520734e-3. When I plugged that in for the %ion I got 0.1476308633. I typed that into my homework and it said that is incorrect.
*Friday, January 24, 2014 at 8:13pm*

**10th grade Science**

http://orthopedics.about.com/cs/sportsmedicine/a/iceorheat.htm http://health.howstuffworks.com/medicine/first-aid/ice-or-heat-for-injury.htm
*Friday, January 24, 2014 at 7:36pm*

**Physics**

A car is traveling at 16.0 m/s, and the driver sees a traffic light turn red. After 0.500 s (the reaction time), the driver applies the brakes, and the car decelerates at 8.00 m/s2. What is the stopping distance of the car, as measured from the point where the driver first ...
*Friday, January 24, 2014 at 6:46pm*

**Language Arts Reading Book: **

OK, Here it is! Please help me please! :( As a young girl of ten, I had never imagined that my family would pick up and leave Sweden. This was our homeland. But one day my father came home excitedly waving a newspaper with a headline that screamed “Free Land in America!&#...
*Friday, January 24, 2014 at 5:17pm*

**Social studies**

First, what is imperialism? Then, what were the causes of the Spanish-American War? Do you see the connection?
*Friday, January 24, 2014 at 12:00pm*

**Management Accounting**

How do i figure out without knowing how many haircuts were done for the first question
*Friday, January 24, 2014 at 10:55am*

**vocabulary**

As we returned to the dressing room after that terrible first half, the whole atmosphere seemed to be (pervaded, capsized) by defeat. Ans. capsized?? With eager students and able teachers, learning will (flourish, outstrip), even though the school building may be old and ...
*Thursday, January 23, 2014 at 9:40pm*

**SS-check my answers plz!!!**

1. A person favoring one side of a political issue is a faction. partisan. a party favor. implying power. 2. The Democratic-Republicans believed in strong state governments and rule by the wealthy class. a national bank. a strong federal government. rule by the people. 3. ...
*Thursday, January 23, 2014 at 8:54pm*

**physics**

A model rocket is launched straight upward with an initial speed of 47.7 m/s. It accelerates with a constant upward acceleration of 2.02 m/s2 until its engines stop at an altitude of 157 m. What is the maximum height reached by the rocket? How long after lift off does the ...
*Thursday, January 23, 2014 at 6:34pm*

**physics**

A tennis ball has a mass of 0.057 kg. A professional tennis player hits the ball hard enough to give it a speed of 52 m/s (about 117 miles per hour.) The ball moves toward the left, hits a wall and bounces straight back to the right with almost the same speed (52 m/s). As ...
*Thursday, January 23, 2014 at 4:55pm*

**Algebra 1**

Which statement about real numbers is true? Across the heading says: real numbers. The first big circle says: rational numbers The second biggest circle inside rational numbers says: integers The third circle within the rational numbers says: whole numbers. Then there is a ...
*Thursday, January 23, 2014 at 4:33pm*

**soicalstudies(CHECK ANSWERS) 10Qs**

please check them ! 1. The Aztecs adapted to their environment mainly by A.using terracing and irrigation to farm. B.living a nomadic hunter-gatherer lifestyle. C.trading peacefully with neighbors. D.settling along the coasts where they could fish.(I PICK THIS) 2. Why did ...
*Thursday, January 23, 2014 at 3:04pm*

**Language Arts 8th **

To the Top “Great works are performed, not by strength, but by perseverance.” -Samuel Johnson Have you ever wanted to give up on something before you even started? That’s how Raja felt as he squinted up at the looming mountain crowned in clouds. Then he looked ...
*Thursday, January 23, 2014 at 1:05pm*

**EARTH SCIENCE**

I tried with the Answers you gave me the first time I submitted the test but it told me it is incorrect. I thought those were correct as well..
*Thursday, January 23, 2014 at 12:42pm*

**math**

the gradient of four ramps are given below; car 20% ski jump 0.15 skateboard 1/2 bike 0.3 list the ramps in order , steepest first
*Thursday, January 23, 2014 at 12:36pm*

**maths**

the third term of a geometric sequence is 6 and the sixth term is 3 over 32. Determine the first terms and the general term Tn?
*Thursday, January 23, 2014 at 2:58am*

**math**

A golf ball is to be hit 300 yards straight to make a hole in one. Having only played miniature golf, your first swing makes the ball skew 50 yards N 30 W. Trying to get back on track, the second shot goes 80 yards N 35 E. Now you are very upset with this game and you swing ...
*Thursday, January 23, 2014 at 2:36am*

**Math**

An average cab ride is 7.3 miles. The cost is $3 for the first mile and $0.20 for additional 1/10 mile. Write the formula for the cost of the cab ride function C(x). - did not match any documents. No pages were found containing " An average cab ride is 7.3 miles. The cost...
*Thursday, January 23, 2014 at 2:05am*

**Quick math help**

An average cab ride is 7.3 miles. The cost is $3 for the first mile and $0.20 for additional 1/10 mile. Write the formula for the cost of the cab ride function C(x). - did not match any documents. No pages were found containing " An average cab ride is 7.3 miles. The cost...
*Thursday, January 23, 2014 at 2:05am*

**CCA 8th Language arts**

To the Top “Great works are performed, not by strength, but by perseverance.” -Samuel Johnson Have you ever wanted to give up on something before you even started? That’s how Raja felt as he squinted up at the looming mountain crowned in clouds. Then he looked ...
*Wednesday, January 22, 2014 at 10:41pm*

**Math**

I'm a 5th grader and I'm having a hard time writing the above fractions in order. They are 3/10, 1, 1/4, 5/8, 2/3, 1/8, 5/6, 3/4, 0, 1/6, 7/8, 1/3? Am I suppose to find the least common denominator first?
*Wednesday, January 22, 2014 at 10:15pm*

**Data Management**

what is the probability of not getting a four on the first try and a 4 on the second. Pr=5/6 * 1/6 odd prime number? 1,3, 5, ? expected waiting time? Dont know, what is the time for each roll? Prob one roll=3/6 since this is 1/2, then one should "expect" a prime ...
*Wednesday, January 22, 2014 at 9:36pm*

**Math**

first rebound = .75(200) 2nd rebound = .75(.75(200)) =.75^2 (200) 3rd = .75^3 (200) 4th = .75^4 (200 = appr 63.28 ft
*Wednesday, January 22, 2014 at 9:25pm*

**calculus**

multiply both numerator and denominator by 1/n then Lim (-1)^n (5+7/n)/(6+5/n) so as n gets large, the second part becomes (5/6) the first part is +-1, depending if n is odd or even. there is not a limit. however, the funcion is +- 5/6 and is bounded by those two numbers.
*Wednesday, January 22, 2014 at 9:24pm*

**Physics **

A bike first accelerates from 0.0m/s to 5.0m/s in 4.5s, then continues at this constant speed for another 4.5s. What is the total distance traveled by the bike?
*Wednesday, January 22, 2014 at 8:29pm*

**Physics **

A bike first accelerates from 0.0m/s to 5.0m/s in 4.5s, then continues at this constant speed for another 4.5s. What is the total distance traveled by the bike?
*Wednesday, January 22, 2014 at 8:29pm*

**Algebra 1**

x = games won y = games lost Write two equations: x + y = 96 x = 2y Substitute the second equation into the first equation: 2y + y = 96 3y = 96 3y/3 = 96/3 y = 32 Solve for x. Put y value in either equation: x = 2(32) x = 64
*Wednesday, January 22, 2014 at 8:18pm*

**Algebra 1**

x = games won y = games lost Write two equations: x + y = 96 x = 2y Substitute the second equation into the first equation: 2y + y = 96 3y = 96 3y/3 = 96/3 y = 32 Solve for x. Put y value in either equation: x = 2(32) x = 64
*Wednesday, January 22, 2014 at 8:14pm*

**4th grade math**

Sam worked 36 hours in two weeks he worked twice as many hours in the second week as the first week how many did he work in the first week
*Wednesday, January 22, 2014 at 7:05pm*

**4th grade math**

Sam worked 36 hours in two weeks he worked twice as many hours in the second week as the first week how many did he work in the first week
*Wednesday, January 22, 2014 at 7:05pm*

**8th CCA Science**

1. Under which of the following conditions would a fossil most likely form? A. A living thing dies and sediment is very slowly deposited on top of its body. B. A living thing dies and sediment quickly covers its body.**** C. A living thing dies and its skeleton is left exposed...
*Wednesday, January 22, 2014 at 7:01pm*

**Chemistry**

Correction: First sentence should read "multiply left side by 2 and right side by 3." Sorry for any confusion.
*Wednesday, January 22, 2014 at 5:44pm*

**Math**

I ment to put the directions first but I put the expression first
*Wednesday, January 22, 2014 at 5:43pm*

**Phys/Ed**

1. Select the skill-related component which is defined as the ability to combine strength and speed while you are moving. (1 point) balance coordination power speed 2. At the paintball field, Wynonna is always the first one on her team to be hit with the paintball and put out ...
*Wednesday, January 22, 2014 at 4:57pm*

**math**

3W = L 2W + 2L = 256 Substitute 3W for L in second equation and solve for W. Insert that value into the first equation and solve for L. Check by inserting both values into the second equation. L * W = ?
*Wednesday, January 22, 2014 at 4:35pm*

**business math**

Find the annual amount of FICA at a 7.51% rate by computing his annual salary. Sam Takagi Weekly salary: $435.16 Not self-employed Find the annual amount of FICA by computing his annual salary. $169,938.68 $16,993.87 $1,699.39 2. Find the annual amount of FICA at a 7.51% rate ...
*Wednesday, January 22, 2014 at 3:04pm*

**History**

1. In the aftermath of Columbus and voyages of encounter, Europeans believed the first humans in the Americas might have been: A. Chinese pirates. B. the lost tribes of Axum. C. Phoenician seafarers from Carthage. D. Mongol tribesmen. is it B
*Wednesday, January 22, 2014 at 2:08pm*

**English **

In this example I need to say 1. Choose a term or phrase to describe the type of writing at issue. 2. What's the social purposes that motivate writing 3. Comment on how the form and content of each passage are related to the various social situations. With a love and ...
*Wednesday, January 22, 2014 at 1:52pm*

**help-3 questions**

5. Which of the following is an important criterion for evaluating the effectiveness of a graphic organizer? how colorful it is how well it conveys information how many pages it is how many words it contains 6. How was information conveyed in the Google Earth tour about ...
*Wednesday, January 22, 2014 at 11:50am*

**social studies**

why were native Americans forced to leave their lands during the 1830's? a) settlers wanted to settle the land b) us citizens settled the land first c) the supreme court ordered their removal d) the new land was better for farming
*Wednesday, January 22, 2014 at 11:28am*

**algebra 2**

solve by completing the square ?? first divide by 2 and move the constant to the right ... x^2 - 2x = 1 add 1 to both sides x^2 - 2x + 1 = 1 + 1 (x-1)^2 = 2 x-1 = ± √2 x = 1 ± √2
*Wednesday, January 22, 2014 at 7:59am*

**Math**

the taxi fare for the first half mile is $2.40 an additional charge at the rate 0.20 for each additional mile how many miles can i ride with $10.00 dollars and a $2.00 tip
*Tuesday, January 21, 2014 at 10:45pm*

**A Peculiar Question**

I agree, it is a peculiar question. A database is a collection if information, which can be later manipulated and retrieved. Gathering is only the first part. Now the "I gathered mine from the internet, but ..." I have no idea what you mean, but I suggest you read ...
*Tuesday, January 21, 2014 at 9:01pm*

**Anatomy & Physiology**

I thought I answered the first one, extension.
*Tuesday, January 21, 2014 at 8:47pm*

**algebra**

Two phone companies offer discount rates to students. The first company wants $9.95 per month plus $.10 per minute for long distance calls. The second company wants $12.95 per month plus $.08 per minute for long distance calls.
*Tuesday, January 21, 2014 at 8:30pm*

**math**

the first term of a geometic sequence is 3 and the sum of second and third terms is 60 determine the first three terms and the general terms tn.
*Tuesday, January 21, 2014 at 4:24pm*

**Math**

A car dealer pays commissions of 6% on the first $500 in sales and 8% on sales over $500. What is the commission on an $800 sale?
*Tuesday, January 21, 2014 at 4:13pm*

**maths**

The 2nd term in Geometric sequence is -4 and the 5th is 32 ,find the general formula \term and the first 3 terms ,find the 18th term
*Tuesday, January 21, 2014 at 3:16pm*

**Physics**

A 33.4 kg child, with a 3.05 kg backpack on his back, first stands on a sidewalk and then jumps up into the air. Find the force (positive up/negative down) on the sidewalk from the child when the child is (a) standing still and (b) in the air. Now find the net force (positive ...
*Tuesday, January 21, 2014 at 2:55pm*

**Algebra Check**

Thank you so much! Just one quick question...is it a rule to always simplify first and then substitute, as in question 2?
*Tuesday, January 21, 2014 at 2:54pm*

**Chemistry Help Please!**

SHOW WORK PLEASE SO I CAN DO THE REST OF MY HW BY LOOKING AT THIS QUESTION. The decomposition of hydrogen peroxide is catalyzed by iodide ion. The catalyzed reaction is thought to proceed by a two-step mechanism: 1. H2O2(aq) + I(aq) → H2O(l) + IO(aq) (slow) &#...
*Tuesday, January 21, 2014 at 2:01pm*

**Physics**

ok thanks did i get the first one correct?
*Tuesday, January 21, 2014 at 1:20pm*

**Alina !@#$%^&zubak**

It wouldn't have happened if you'd followed directions about your first name and school subject.
*Tuesday, January 21, 2014 at 12:24pm*

**History**

Maggie, First Answer Is Wrong It's a marriage in the slaveholder’s family
*Tuesday, January 21, 2014 at 11:55am*

**add maths**

huh?? for your first ... /(x+2) , x is not equal to -2 so in " .. x is not equal to k" , I guess k must be -2
*Tuesday, January 21, 2014 at 8:49am*

**calculus**

I would solve it for y first 1-xy = x-y y - xy = x-1 y(1 - x) = x-1 y = (x-1)/(1-x) = -1 , x ≠1 Well, isn't that special !!! so y' = 0 and of course y '' = 0 Wolfram took it as a pair of intersecting lines. Notice the horizontal line y = -1 The vertical ...
*Tuesday, January 21, 2014 at 8:31am*

**Foreign language**

First of all, you need to give these a try. Then I'll alert our Spanish and French tutor to your posts.
*Tuesday, January 21, 2014 at 8:31am*

**Mathh**

your first part is correct for the 2nd part, I would have it as T(x) = .0175x - 3000 , x ≥ 400,000 (so I have taken 1.75% on the whole thing, but then subtracted the 0.75% part for the first 400,000 which is 3000. Where did you get your $500 from ? )
*Tuesday, January 21, 2014 at 7:58am*

**Mathh**

A certain state taxes the first $400,000 in property value at a rate of 1%; all value over $400,000 is taxed at 1.75%. Find a piecewise-defined function T that specifies the total tax on a property valued at x dollars. (Simplify your answer completely.) 0.01x if 0<x<400,...
*Tuesday, January 21, 2014 at 12:58am*

**calculus**

what is the 2nd derivative of: 1-xy = x-y i get (-y-1)/(x-1) for the first the second i know is (-y-1)/(x-1)^2 but i keep getting (0)/(x-1)^2 please show me the steps i should be taking and if possible what i did wrong
*Monday, January 20, 2014 at 10:57pm*

**A Few Corrections**

1. "protagonist.But, at first, GUy Montag" Should be protagonist. But, at first, Guy Montag 2. "confusing.Guy Montag in Fahrenheit" Should be confusing. Guy Montag in Fahrenheit 3. Instead of saying Guy as referring to him, you should say Montag. It is ...
*Monday, January 20, 2014 at 8:20pm*

**English**

Okay here is the second thing I have to say. your first paragraph should be your thesis, you opening paragraph. You are putting too much stuff out there at once. You have to start this story off by pulling your reader in not making them like, "Oh GOD!! man this seems ...
*Monday, January 20, 2014 at 8:10pm*

**English**

First thing I want you to do is read over this very carefully, I only read three sentences and you have a few minor mistakes.
*Monday, January 20, 2014 at 8:05pm*

**English**

Yes, here it is, I mostly need peer editing . Guy Montag lives a dystopian society, with a distant wife. He had never done anything extraordinary, however; he suddenly became a grand book thief. Montag soon encountered a very different girl, by the name of Clarisse, after that...
*Monday, January 20, 2014 at 8:02pm*

**english**

I want you to first knock out the obvious. America is a wealthy country is already blatantly obvious that that is a fact. Think of one that someone is would just think, one that is not 100% true.
*Monday, January 20, 2014 at 7:49pm*

**phsic**

When an object of mass m1 is hung on a vertical spring and set into vertical simple harmonic motion, it oscillates at a frequency of 14.2 Hz. When another object of mass m2 is hung on the spring along with the first object, the frequency of the motion is 3.90 Hz. Find the ...
*Monday, January 20, 2014 at 7:39pm*

**Math**

A family has two cars. The first car has a fuel efficiency of 40 miles per gallon of gas and the second has a fuel efficiency of 30 miles per gallon of gas. During one particular week, the two cars went a combined total of 1250 miles, for a total gas consumption of 35 gallons...
*Monday, January 20, 2014 at 6:40pm*

**health**

I don't know if you can access this (not sure if this information is free) but there is a review on the negative and positive health effects on alcohol consumption. Since I cannot post the link, here is the reference: Grønbæk, M. (2009). The positive and ...
*Monday, January 20, 2014 at 6:02pm*

**PHYSICS(HELP)**

each F = k q^2/d^2 side of cube length s = .01 meter now lets put one corner at the origin and look at the one up and across d = sqrt [ (s sqrt 2)^2 + s^2] = s sqrt(3) and d^2 = 3 s^2 now you need directions i,j,k components first component in x y plane, cosines of angles cos ...
*Monday, January 20, 2014 at 5:57pm*

**what about now**

voting, civil rights, women's rights maybe, social security, does this answer the question Theodore Roosevelt first modern president?
*Monday, January 20, 2014 at 4:56pm*

**writeacher or ms.sue help**

voting, civil rights, women's rights maybe, social security, so that doesn't answer the question Theodore Roosevelt first modern president?
*Monday, January 20, 2014 at 4:38pm*

**physics-forces**

Kara (55kg) is standing next to her brother Ben (80kg) on a large piece on frictionless ice. Kara decided to push her brother with a force of 200N expecting him to slide across the ice while she remains standing in the middle of the ice rink laughing. a) Describe the motion ...
*Monday, January 20, 2014 at 3:15pm*

**math**

A is the starting amount (3A/4) after the first gate A(3/4)^2 after the second gate... so A(3/4)^3=648 A= 648*4*4*4/27=648*64/27= ...
*Monday, January 20, 2014 at 3:08pm*

**economics math**

Consider a rational consumer with a utility function given by U(x,m)=Aln(2x)+m. The consumer needs to decide how much of good x to buy given the following pricing rule: the first 10 units sell at a price of $2 p/unit, additional units sell at a price of $3 p/unit. QUESTION. ...
*Monday, January 20, 2014 at 2:54pm*

**Chemistry**

You need two equations and solve them simultaneously. The problem doesn't say which acid is used (and it doesn't need to do that) but I will assume HCl and work accordingly. Any acid can be used as long as you keep the N and M straight. The first equation is g Na2CO3...
*Monday, January 20, 2014 at 2:40pm*

**math (fractions)**

Three people share a sum of money. The first receives 2/7 and the second receives a 2/5 share of the money. What fracion does the third receive?
*Monday, January 20, 2014 at 1:03pm*

**help on essay**

Focus on TR as the first pres to work on conservation. -- conservation of what? -- how did he focus? -- what were the results?
*Monday, January 20, 2014 at 12:51pm*

**help on essay**

i have to write an essay on theodore roosevelt the question is theodore roosevelt the first modern president. outline: i think it should be 1. introduction 2. view of presidency 3. regulating big business 4. environmental conservation 5. conclusion.
*Monday, January 20, 2014 at 12:13pm*

**math**

Robert has three boxes of letters: The first box contains the six letters in the word "bubble" the second box has the three letters in the word "zoo" and the third contains the four letters in the word "taxi". If he randomly selects one letter ...
*Monday, January 20, 2014 at 11:25am*

**physics**

The tension is such that it holds the signs up, and the cable is in equilibrium. first of all, the weight: 500=T*sin40+T*sin50 solve for T
*Monday, January 20, 2014 at 7:23am*

**Physics-forces**

1. NASA launched a 550kg satellite into space. Its engines have a thrust of 8000N. a) What is the downward froce of gravity acting on the rocket at blast off? (is it 5390N?) b) What is the acceleration of the rocket at blast-off? (Hint: Fine Fnet first) 2. A planet has a mass ...
*Monday, January 20, 2014 at 12:18am*

**Algebra**

f = father g = Gustav Write two equations. f = 7g f - 1 = 9(g - 1) Substitute first equation into second. 7g - 1 = 9g - 9 7g - 9g -1 + 1 = 9g - 9g - 9 + 1 -2g = -8 -2g/-2 = -8/-2 g = 4 Substitute g value in either equation. f = 7(4) f = 28 Check: One year ago..... f is 27 and ...
*Sunday, January 19, 2014 at 11:50pm*

**Physics **

An electron passes location <0.02m, 0.04m,−0.06m>, and 4 μs later is de- tected at location <0.02 m, 1.84 m,−0.86 m>. Find the average velocity of the elecron: ¯v = <vx, vy, vz> If the electron continues to travel at this av- erage ...
*Sunday, January 19, 2014 at 9:07pm*

**physics 2**

heat to melt x grams ice: x*Hfusion heat absorbed by warm water: 120*cw*(tf-85) heat absorbed by melted ice to get to final temperataure: x*cw*(tf-0) the sum of the heats gained is zero. x is the amount of ice that melted. xHf+( x)cw*(tf-0)+120(cw)(Tf-85)=0 first, see if all ...
*Sunday, January 19, 2014 at 6:55pm*

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