Friday

January 30, 2015

January 30, 2015

Total # Posts: 350

**math**

1.A ball is dropped from a height of 2.0, to a floor. After each bounce, the ball rises to 63% of its previous height What is the total vertical distance the ball has travelled after 5 bounces? 2.An oil produces 25000 barrels of oil durign its first month of production. ...
*November 2, 2008*

**physics**

a 200kg sailboat experiences an eastward force of 3000N by the ocean tide and a wind force against its sails with magnitude of 6000N directed toward the northwest (45 degrees north of west). what is the magnitude of the resultant acceleration?
*October 23, 2008*

**College Physics!!!**

A truck on a straight road starts from rest accelerating at 2.0 m/s2 until it reaches a speed of 20 m/s. Then the truck travels for 20 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.0 s. What is the average velocity ...
*October 6, 2008*

**Math**

The derivative of y= x2-3x at the point (0,0)is?
*July 25, 2008*

**Math**

If k(x)=x2-3x, the value of k(3+h)is?
*July 25, 2008*

**Math**

If f(x)= 2x-5, the value of f(4)is?
*July 25, 2008*

**CHEM**

The mass of an evacuated 255-mL flask is 143.187g. The mass of the flask filled with 267 torr of an unknown gas at 25 degrees Celsius is 143.289g. Calculate the molar mass of the unknown gas.
*July 22, 2008*

**physics class-Help!!!**

torque is radius X Force sin theta Torque 1 and 2 have angles of 90 degrees making it equal to 1. Torque 1:0.6 (radius of 1.2) X 6.0 N Torque 2:1.5 (radius of 3)X 5.2 N Torque 3:1.5 (radius of 3)X 5.2 N sine 30 degrees Torque 1 + Torque 2 + Torque 3 = Net Torque 3.6 + 7.8 + 3....
*July 16, 2008*

**physics class-Help!!!**

A 3.0 m rod is pivoted about its left end.A force of 6.0 N is applied perpendicular to the rod at a distance of 1.2 m from the pivot causing a ccw torque, and a force of 5.2 is applied at the end of the rod 3.0 m from the pivot. The 5.2 N is at an angle of 30 degrees to the ...
*July 16, 2008*

**math**

acute triangle
*May 30, 2008*

**music**

What was the davul drum used for
*May 18, 2008*

**SPSS**

Stock automobiles containing dummies in the driver seats crashed into a wall at 35 miles per hour. National Transportation Safety Board officials collected info on how the crash affected the dummies. One variable scored the extent of chest injuries sustained by the dummies (...
*May 13, 2008*

**statistics**

can someone please tell me what the equation is to find the sum of squares...im looking online but everything is sohard to understand and all the symbols are confusing...?? thank you!
*May 8, 2008*

**INS 205**

Imagine that you immigrated to a foreign county with a culture vastly different from yours. While the economic opportunity in the country is great, there is a strong push to assimilate into the new culture. What are the positive and negative aspects of assimilating into the ...
*December 14, 2007*

**world history**

Also, the Congo River.
*November 13, 2007*

**world history**

Describe the kingdom of kongo (the time/ place/ significance). Describe the economy.
*November 13, 2007*

**physics**

A bicycle is moving at 8.3 m/s. What is the angular speed of its tires if their radius is 42 cm?
*October 22, 2007*

**PHYSICS**

Jason is practicing his tennis stroke by hitting balls against a wall. The ball leaves his racquet at a height of 57 cm above the ground at an angle of 80° with respect to the vertical. (a) The speed of the ball as it leaves the racquet is 17 m/s and it must travel a ...
*October 16, 2007*

**PHYSICS**

A ball is thrown from a point 1.2 m above the ground. The initial velocity is 19.8 m/s at an angle of 34.0° above the horizontal. (a) Find the maximum height of the ball above the ground. (b) Calculate the speed of the ball at the highest point in the trajectory.
*October 16, 2007*

**Science (chem)**

how would you make 300mL of toluene and hexane in a artion of 70:30 respectively? i dont understand please help. thanks
*September 30, 2007*

**Physics**

Its a question on scalar and vector quantities - speed and velocity have different meanings - speed has no direction, velocity does, hence given no direction, it would be speed. it is instantaneous as average would be 60-0 / 8 = x, whereas the manufacturer is trying to show ...
*September 9, 2007*

**Journal Entry of a Subordinate Group Member**

Subordinate Groups: Native Americans, African Americans, Chinese Americans, Japanese Americans, Arab Americans, Filipino Americans, Korean Americans, Vietnamese Americans, Asian Indians, Hawaiians, Irish Americans, Polish Americans, Norwegian Americans, Jewish Americans, Cuban...
*August 26, 2007*

**math**

There were 3 times as many adults as students attending a school play. If the attendance was 480, how many adults and how many students attended the play? Let x equal the number of students attending the school play and solve this equation. 3x + x = 480
*August 9, 2007*

**math**

Find the distance between (–3, –2) and (1, 4). (1, 4) - (–3, –2) = (1- -3, 4 - -2) = (1+3, 4+2) = (4,6) |(4,6)| = sqrt[4^2 + 6^2] = sqrt[52] = 2 sqrt[13]
*July 8, 2007*

**Japanese**

okay....so in my Japanese class right now, we're currently writing our speeches.. So far, I've come up with: (This is actually in Japanese but I've chosen to write this in English as I'm on a school computer which only allows English characters!) "At first...
*May 24, 2007*

**Calculus HELP**

for the power seies n^4x^n/2(n-1)...find the radius and interval of convergence
*May 6, 2007*

**english please helppppppppppp**

Can some one explain this passage I do not understand it it is by hazlitt it is called "on the want of money" There are two classes of people that I have observed who are not so distinct as might be imagined - those who cannot keep their own money in their hands, and...
*April 17, 2007*

**english**

Can some one explain this passage I do not understand it it is by hazlitt it is called "on the want of money" There are two classes of people that I have observed who are not so distinct as might be imagined - those who cannot keep their own money in their hands, and...
*April 17, 2007*

**english**

can you help with this passage on hazlitt On the want of money There are two classes of people that I have observed who are not so distinct as might be imagined - those who cannot keep their own money in their hands, and those who cannot keep their hands from other people'...
*April 16, 2007*

**Algebra**

X+8 ____ x2 + 11x +24 see other post.
*April 10, 2007*

**Algebra**

X+8 ____ x2 + 11x +24 factor the denominator (x+8)(x+3) then reduce by dividing out the common fractions.
*April 10, 2007*

**math**

I am a positive integer less than 100. two more than my value is a multiple of 6. the sum of my digits is a multiple of 7. I must show all my work This kind of problem can't be solved by writing and solving one or two equations. You have to use "trial and error" ...
*March 22, 2007*

**physics**

A pendulum clock that works perfectly on Earth is taken to the Moon. (a)Does it run fast or slow there? (b) if the clock is started at 12:00:00 am, what will it read after one Earth day(24hrs)? Assume that the free-fall acceleration on the Moon is 1.63 m/s^2 I tried to do this...
*March 21, 2007*

**physics**

Given that x=Acos(wt) is a sinusoidal function of time, show that v(velocity) and a(acceleration) are also sinusoidal functions of time. (HINT: Use v=square root [(k/m)(A^2-x^2)] and a=(-k/m)X The hint tells you what to do: put Acoswt for X. A second way which is easier is in ...
*March 15, 2007*

**genetics (again)**

i asked this question...when subcloning a gene and inserting it into a vector you normally would use x-gal to locate transformants if x-gal is not available what are the alternatives...and thankyou for the alternatives but i was wondering if there was any other process that ...
*March 9, 2007*

**genetics**

when subcloning a gene and inserting it into a vector you normally would use x-gal to locate transformants if x-gal is not available what are the alternatives <<In addition to X-Gal, several alternative [3-gal sub- strates with different halide groups on the indolyl ...
*March 8, 2007*

**Chemistry**

Asprin, c9h804, is produced through the following reaction of salicyclic acid, c7h6o3, and acetic anhydride, c4h6o3. chemical equation: c7h6o3 + c4h6o3 yields c9h8o4 + hc2h3o2 (all numbers in this equation are subscripts) At 20 degrees Celsius. how many liters of acetic acid, ...
*January 21, 2007*

**Algebra**

the union of (a,b,c,d)and (14,15)
*January 7, 2007*

**Algebra**

v-6<35 add six to both sides. first you take the 6 and bring it over. so its v<35-6. Then you subtract them, giving you the answer v<29 add six to both sides.
*January 7, 2007*

**Algebra**

n+2>32 subtract 2 from both sides.
*January 7, 2007*

**Algebra**

12 - 5z/4 < 37 12-5z/4 < 37 Subtract 12 from each side. -5z/4 < 25 Mulitply each side by -4 to cancel out the negative and 4 in the denominator. Switch the inequality symbol because you are multiplying/dividing by a negative number. 5z > -100 Divide each side by 5...
*December 14, 2006*

**Algebra**

- 20> 8 +7a Solve inequalities like you would an equation, EXCEPT if you multiply or divide by a negative number, reverse the inequality sign. Let's look at your problem: - 20 > 8 + 7a First subtract 8 from both sides (whatever operation you do to one side you must ...
*December 14, 2006*

**Algebra**

3x - 1 > 14 3x-1>14 3x>14+1 3x>15 x>5
*December 14, 2006*

**MATH LOGIC AGAIN**

Hi can some one go back to my Math logic problem and possibly give me one more example? thanx :) I found a paper you may want your library to get for you: http://cat.inist.fr/?aModele=afficheN&cpsidt=13604737 It is probably in the local college library. I wish I had a copy. ...
*December 3, 2006*

**math logic**

I need to find 5 or more ordered pairs (x,y) In which xy = x + y like (0,0) and (2,2) 0,0 2,2 1/2,-1 -1,1/2 i need one more How about two different x's and y''s? (2,3) = 1,5) this is the problem: xy= x+y or the product of xy equals the sum of x and y. example: x= ....
*December 3, 2006*

**earth science**

What are two lines of evidence that indicate that earth is rotating? What is the motion of the stars at night? What does the Sun do in the day? i want to seach features of the earth in its inner structure
*August 30, 2006*

**english**

i have to create a visual display, a creative one, to illustrate what diction is using the defination, one or more examples and an attractive resource for teaching the function of the term What definition of diction are you using? writers or speakers word choice Thanks. Did ...
*August 19, 2006*

**english**

i need to do a visual display to help teach diction, and i cant think of any ideas, i have to use examples too Let's start with what you want to teach about diction. After you decide what you want to teach, finding visuals to illustrate your points should be easier. This ...
*August 19, 2006*

**history**

australia's role in united nations
*August 8, 2006*

**brain teaser help**

You threw away the outside and cooked the inside. Then you ate the outside and composted the inside. What did you just eat? an egg??....
*August 20, 2005*