Saturday

February 6, 2016
Total # Posts: 439

**english**

which is correct?"What a disaster,"shouted Maria. "What a disaster!"shouted Maria!
*March 27, 2008*

**Physics**

A movie stunt man (mass 82.3 kg) stands on a window ledge 5.69 m above the floor. Grabbing a rope attached to a chandelier, he swings down to grapple with the movie’s villain (mass 72.3 kg), who is standing directly under the chandelier. (Assume that the stunt man’s ...
*March 13, 2008*

**Physics**

Ice-hockey star Wayne Gretzky is skating at 12.7 m/s toward a defender, who in turn is skating at 5.39 m/s toward Gretzky. Gretzky’s weight is 677 N; that of the defender is 869 N. Immediately after the collision, Gretzky is moving at 2.21 m/s in his original direction. ...
*March 13, 2008*

**Math**

Find a third-degree polynomial Q such that Q(1)=0, Q'(1)=0, Q''(1)=2, and Q'''(1)=12.
*February 29, 2008*

**Physics**

An engine is used to pull a train of two cars out of a mine. The floor slopes upward at an angle of 24o. Each car has a mass of 0.8x104 Kg and normally travels without friction on the tracks. The engine can exert a maximum force of 1.4x105 N on car A. If the engineer again ...
*February 24, 2008*

**Chemistry**

N2H4(g) + H2(g) 2 NH3(g) H1 = –1876 kJ 3 H2(g) + N2(g) 2 NH3(g) H2 = –922 kJ The H f for the formation of hydrazine: 2 H2(g) + N2(g) N2H4(g) will be
*February 22, 2008*

**science**

what are 3 types of symbiosis
*February 15, 2008*

**Physics**

Thank you so much.
*February 8, 2008*

**Physics**

A 10,000N car comes to a bridge during a storm and finds the bridge washed out. The 650-N driver must get to the other side, so he decides to try leaping it with his car. The side the car is on is 16.6 m above the river, while the opposite side is a mere 7.90 m above the river...
*February 8, 2008*

**english**

in to kill a mocking bird who leaves their shoes at the school??? who does scout escort home?? whoes education does atticus help finance and who urges scout to stand up out of respect for atticus???
*January 28, 2008*

**math**

You can always dig up an extra player
*December 16, 2007*

**math**

a bathtub can be filled by the hot and cold water pipes in four minutes and, when full, can be emptied by the waste pipe in five minutes. If it is half full and all three pipes are set running, when will the tub be filled?
*October 25, 2007*

**business studies**

I was wondering could anyone help me with question 6 an page 302 of the Business Studies for households and enterprises Junior Certificate by Matt Hynes
*October 13, 2007*

**CHEM**

A 5.00 g sample of Al pellets (specific heat = .89 J/g degrees c) and a 10.00 g sample of Fe pellets (specific heat = .45 J/g degrees c) are heated to 100.0 degrees C. The mixture of hot Fe and Al is then dropped into 97.3 g of water at 22.0 degrees C. Calculate the final temp...
*October 1, 2007*

**Chemistry**

i don't even understand what the problem is asking.
*October 1, 2007*

**CHEM**

A 5.00 g sample of Al pellets (specific heat = .89 J/g degrees c) and a 10.00 g sample of Fe pellets (specific heat = .45 J/g degrees c) are heated to 100.0 degrees C. The mixture of hot Fe and Al is then dropped into 97.3 g of water at 22.0 degrees C. Calculate the final temp...
*October 1, 2007*

**physics**

why are the lengths of days in spring and autumn the same? if the sun does not set, why is it so cold?
*September 21, 2007*

**One for Drwls (calc)**

Thanks bob, and thanks to drwls too, in the earlier ones. Charlie.
*September 15, 2007*

**One for Drwls (calc)**

Sorry, you're so quick, I took one of your answers for another question! Finally, Therefore, given my scenario, I could use the integral to calculate the area under the curve described by the derivative? Charlie.
*September 15, 2007*

**Calculus**

Great, and thank you very much. Charlie.
*September 15, 2007*

**Calculus**

"My reasoning is that 'undoing' the derivative gives me the derivative." oops, meant to write ......gives me the integral.
*September 15, 2007*

**Calculus**

Thanks- that was quick! Therefore, given my scenario, I could use the integral to calculate the area under the curve described by the derivative? Charlie.
*September 15, 2007*

**Calculus**

If I have a function f(x), and am given its derivative, f'(x): may I take it as a given that f(x) is an integral of f'(x). My reasoning is that 'undoing' the derivative gives me the derivative. Eg is 1/3x^3 an integral of x^2? Thanks.
*September 15, 2007*

**english**

complete subject and simple subject of this sentence. Ties in fancy boxes are gifts for some valentines.
*September 11, 2007*

**english**

complete subject and simple subject of this sentence. They can be funny or serious.
*September 11, 2007*

**english**

whats another word for private? http://www.answers.com/private Scroll down and look for synonyms. =)
*August 15, 2007*

**history**

What caused the British government to take action with regard to the atrocities committed in the Congo by King Leopold's colonial managers in 1904? charlie, maggie, dali, or whoever, http://www.jiskha.com/search/search.cgi?query=atrocities Skip the first two links here, ...
*August 15, 2007*

**history**

Offer evidence to prove that the Congo Free State violated Articles I,V,and VI of the Berlin Act of 1885. Check this answer. http://www.jiskha.com/display.cgi?id=1186771696
*August 15, 2007*

**Calculus:check please**

given: 1st derivative is 2(2-3x-2x^2)/(1+x^2)^2 (quotient rule) I've found the stationary points to be x=1/2 and x=-2 Am I on the right track? If so, I plan to plug in values to the L andR of them into the whole derivative so as to clasify them. Still on track? Thanks ...
*August 10, 2007*

**Graphing Functions**

Can someone point me to a starting point in graphing f(x)= 25/cos x If it weren't a fraction and a cosine, I'd try to build a table of coordinates. This one, I have no start point. Thanks
*August 2, 2007*

**science ( physics)**

hello, i am having trouble with this problem. Calculate the average force of friction acting on a wood block as it is propelled along the floor by an elastic band ? my solution and my ideas: What does it mean by average froce of friction? I first weighed the peice of wood to ...
*May 30, 2007*

**Physics please check**

Answer is Counter Clock Wise
*April 24, 2007*

**English**

I wrote, "I like to swim in summer." My teacher marked it wrong and said it should read "I like to swim in THE summer." Can anyone offer an explanation, please, why my way is wrong? I don't know why it was marked wrong. Both with and without "the&...
*April 17, 2007*

**biology/chemistry**

Please help i am on a dead line and am stuck on this question, Gametes produced in the process of meiosis in humans (chromosome 4)has a long and short arm the short arm has the gene for Huntington's (H) attached and the long arm the gene for Red hair (R) i need to show (i...
*April 10, 2007*

**One for drwls**

Thank you for answering my question. Can you steer me to making a quadratic from 1/4(x+3)^2-4 Then I can get the intercepts. Thanks Just multiply it out to put it in the standard form, ax^2 + b^2 + c (1/4)(x+3)^2-4 = (1/4)(x^2 + 6x + 9) -4 = (1/4)x^2 + (3/2)x - 7/4 You're ...
*March 21, 2007*

**Algebra**

I'm trying this again, I'd like the quadratic form, so i can then work the intercepts myself. SO: what's the quadratic form of 1/4(x+3)^2-4 I need it to find the intercepts of the parabola it describes. Check: I think the parabola is 1/4 scaled, moved 3 to the left...
*March 21, 2007*

**math**

what's the quadratic form of 1/4(x+3)^2-4 I need it to find the intercepts of the parabola it describes. Check: I think the parabola is 1/4 scaled, moved 3 to the left and down 4 compared to a y=x^2 parabola. Is this ok? If you are looking for the intercepts, you will have...
*March 20, 2007*

**egypt mummification**

thx a lot....this saved me alot of time
*February 8, 2007*

**PHYSICS HELP**

It increases
*October 16, 2006*