# Questions Asked onDecember 25, 2011

1. ## physics

In an arcade game a 0.142 kg disk is shot across a frictionless horizontal surface by compressing it against a spring and releasing it. If the spring has a spring constant of 174 N/m and is compressed from its equilibrium position by 8 cm, find the speed

2. ## Calculus

Calculate the height of a cylinder of maximum volume that can be cut from a cone of height 20 cm and base radius 80 cm , please help me

3. ## Physics

A bullet with a mass m = 4:83 g and initial speed of 330 m/s passes through a wheel which is initially at rest as in the The wheel is a solid disk with mass M = 2.29 kg and radius R = 1.:6 cm. The wheel rotates freely about an axis through its center and

4. ## physics highe school

Explain the different sections of the graph in as much detail as you can?

5. ## maths

a solid cube of side l floats on water with 20% of its volume under water. Cubes identical to it are piled one by one on it. Assumes that the cubes do not slip or topple and contact between their surfaces is perfect. How many cubes are required to submerge

6. ## English

Wild Nights -- Wild Nights! Were I with thee Wild Nights should be Our luxury! Futile -- the Winds -- To a Heart in port -- Done with the Compass -- Done with the Chart! Rowing in Eden -- Ah, the Sea! Might I but moor -- Tonight --In Thee! Which best

7. ## MAth

The sum of four consecutive integers is at least 114. Find the smallest possible values for these numbers. HOW YOU DO THIS?

8. ## IGCSE Chemistry

Hydrocarbons A and B both contain 85.7 % carbon. Their molar masses are 42 and 84 respectively. a) Which elements does a hydrocarbon contain? b) Calculate the empirical formula of A and of B. c) Calculate the molecular formula of A and B. I solved a) and

9. ## statistics

2. Classify the following variable as nominal, ordinal, discrete, or continuous and state why it is such a variable: number of automobile accidents per year (Points : 3)

10. ## Calculus

Find the turning points of y = 3 x 3 + 6 x 2 + 3 x – 1 and determine their nature, also, find the equations of the tangents at these points. please help me

11. ## Calculus--Reiny

Calculus - Reiny, Friday, December 23, 2011 at 6:59pm I read that as (4a^2-1)/(4a^2-16) * (2-a)/(2a-1) , my brackets are necessary = (2a+1)(2a-1)/( 4(a+2)(a-2) * (2-a)/(2a-1) the (2-a)/(a-2) are opposite, they will give you the -1 so.. = -(2a+1)/(4(a+2)) ,

12. ## calculus

Evaluate the following integrals by using appropriate method : ∫cos⁡ ^3 ( 2x-5 )dx help

13. ## physics

a motor pumps water from a depth 0f 6meters. f it pumps 100kg of water in one minute with a velocity of 10m/s. calculate the work done

14. ## Environmental Club Recycling Project Letter

Dear Club Members of Environmental Club, We are going to be start a HUGE organization in order to help the environment. People around the world should realize that recycling is important. If we don't recycle animals won't have a home to leave in the woods

15. ## Math

Use multiplication, division, addition and subtraction and at least one set of parentheses to write an expression that simplifies to 7, 13, or 17. Do your work step by step and explain each step as you simplify the expression. Demonstrate the consequences

16. ## math

if a & b are perpendicular vectors, show that a)(a+2b).(a-b)=|a|^2-2|b|^2 b)(a+b).(a-b)=|a|^2+|b|^2 *how to show it?just multiply it?if yes where does||come from? does||show that it should be a value?

17. ## Themes in American History

I am not sure how to set a time chart on this one (5) The evolution of the concept of "God given freedom of the individual" stemming from the Protestant Reformation and developing through the American Enlightenment and the Great Awakening, and culminating

18. ## calculus

find dy/dx when y = (5 sec^2 x-7 ) ^3 (x^5-5 cosec x - 1)^7 help

19. ## ALGEBRA 1

ARE THESE ANSWERS RIGHT ? Express as a trinomial: (2x-3)(x+7) IS THE ASNWER 2x^2 + 11x - 21 WHAT IS THE VALUE OF 2 times 5^-2 IS THE ANSWER 2/25 DIVIDE: x/x^2-49 divide by 5x^3/x^2 + 9x + 14 IS THE ANSWER x+2/5x^2(x-7)

20. ## Math

THe population of Anytown in 1960 was 1,576,230. In 1990 the population was 892,560. Find the percent change. AM REALLY CONFUSED PLEASE HElp

21. ## English

1. I lied that you were a fine gardener. 2. I lied him that you were a fine gardener. (Are both grammatical?) 3. I lied and told him that you were a fine gardener. (Did the two actions happen at the same time in this sentence?) 4. Lying, I told him that he

22. ## maths

If the base side of a triangle is (x+4) and the height is (x+1), what is x? Please demonstrate how you reached the answer. Thanks.

24. ## calculus

The value of c for which f(x) = x + c/x has a local minimum at x= 3 is (a) -9 (b) - 6 (c) -3 (d) 6 (e) 9

25. ## Family law

In Jackson v. Jackson, the court approaches the issue of changing: (Points: 5) alimony. child support. child visitation. child custody. is it D

26. ## English

Could you please check these two statements, please? 1) At midday I went to my mother-in-law's (house) and I had lunch there. We had seven different kinds of starters. 2) The ones I liked most were breaded artichokes and watercress with cherry tomatoes and