1. physics

A sinusoidal transverse wave of amplitude ym = 6.4 cm and wavelength = 5.2 cm travels on a stretched cord. Find the ratio of the maximum particle speed (the speed with which a single particle in the cord moves transverse to the wave) to the wave speed.

2. chem

Reaction H2 +I2 yields 2HI All three gases are initially at 0.1atm/ upon reaching equilibrium it is found that H2 pressure droped by 55% what is the equilibrium constant for this reaction.

3. science

if a simple pendulum with length 1.50 m makes 72 oscillations in 3 minutes. what is the acceleration of the gravity at its location ?

4. Physics

The planet pluto travels once around the sun every 248 years at a mena distance from the sun of 5890x10^6 km. Find its orbital speed around the sun in (m/s).

5. Physics

a superhero flies 272m from the top of a tall building at an angle of 32 below the horizontal. what is the vertical component of the superhero's displacment?

6. chemistry

reaction between Na2a2o3+licro4

a particle is completing 5 revolution per second in a circle of radius 6 cm.calculate its linear velocity and the centripetal acceleration acting on it.

8. us history

I need help trying to figure out how to even begin an essay. Write in the perspective of a Pennsylvania farmer in the 1700s. - The philosophical ideals embodied in the Declaration of Independence. - The similarities and differences of the philosophies in

9. To: k -- child day care

I've removed your 20 multiple choice questions because you haven't included your answers. It looks like a test and that you want some to answer these questions for you -- or you want to install it in the Jiskha archives. By the way, I think the answers to

10. Math

What is the common difference of an arithmetic sequence if the sum of the second and fourth terms is 0, and the sum of the sixth and eighth terms is 12?

11. Trigonometry

The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me the steps to solve this problem! Thanks!

12. Math !!!!ASAP!!!!!

What are the characteristics of a multi step equation ?????

13. precalculus

Use the Intermediate Value Theorem and a graphing utility to find intervals of length 1 in which the polynomial is guaranteed to have a zero. Use the root feature of a graphing utility to approximate the zeros of the function. h(x)=x^4-10x^2+2

14. chemistry

What is the molar mass of Mg(NO3)2? Explain how you calculated this value.

15. Jr. High Pressure Challenge Question

A small flask has a mass of 22.71 g. When it is filled with water the total mass is 153.38 g. When it is filled with milk the total mass is 157.67 g. What is the density of milk?

16. American Governement

In comparison with the citizens in European democracies, Americans are less likely to:

17. PDF

Please tell me a software to edit ,write PDF files with all the necessary functions in a word document that i can free download

18. Linear Algebra

(1) Define T:R->R be a linear transformation such that T(x,y,z)= (2x,2y,2z) then the given value of T is A. 3 B. 2 C. 4 D. 6 (A) (B) (C) (D) (2) Let V and W be vector spaces over a field F, and let T:V-> W be a linear transformation then only one of the

19. Trigonometry

The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me the steps to solve this problem! Thanks!

20. Trigonometry

The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me the steps to solve this problem! Thanks!

21. Adult education- child care development

An appropriate activity for a pre-schooler is to try on a fire man's equipments after the fire saftey demonstration? I think it is: true?

22. math

Plywood is sold in rectangle sheets 4 feet wide and 8 feet long. How many 4x8 sheets of plywood are needed to completely cover a rectangle shaped floor measuring 16 feet by 12 feet.

23. math

Find the values of the following. 1)(903)2

24. Linear Algebra 2

Let V and W be vector spaces over a field and let T:V->W be a linear transformation then V/kerT =R(T) (A) True (B) False (C) Indifference (D) None of the above (A) (B) (C) (D)

Happy Boxing Day!!!

26. Adult education- child care development

When should you be concerned if a child is not toliet trained? Should you be concerned if the child is not trained by eighteen months of age? I think it is false.

27. physics

If it takes you 9.5 min to walk with an avg velocity of 1.4m/s to the north from a bus stop to a museum entrance. how far did you walk??

28. math

if the domain is the set of integers, the solution set of x^2 -3x -4

29. college

while following an object with her eyes is when eye coordinatio develops

30. writing

i need help on " what does seek to serve mean to you?"

31. Math !!!!ASAP!!!!!

What makes a multi step equation a multi step equation????