# Questions Asked onDecember 25, 2009

1. ## PHYSICS

Q.1.A spring of force constant'k'is cut into two parts whoose lengths are in the ratio 1:2.The parts are now connected in paralle and a block of mass'm'is suspended at the end of the combined spring.Find the period of oscillation performed by the block.

2. ## English

Is it correct to say that the clock crashed on the roof of the car and bounced on the windscreen?

3. ## PHYSICS

A closed circular wire hung on a nail in awall undergoes small oscillations 2 degree & the time period 2sec.Find (a) the radius of the circular wire (b)the speed of the particle farthest away from the point of suspension as it goes through the mean

4. ## MATH GRADE 10****

Scott, Arif, and Diane run a small delivery company. For thier business, they use licensed two-way radios with a 20 km range. Scott is at their office which they have marked as the origin on their map of the town. Arif is dropping off a package at (-8, 16)

5. ## physics

Q.1.Find the total mechanical energy in one time period? my sir says that it is (1/2)mw^2A^2 but according to me it should be 1/4mw^2A^2.How? Q.2.The total mechnical energy of a spring mass system in SHM is E = (1/2)mw^2A^2.Suppose the oscillating particle

6. ## 10th grade

An unsaturated solution is made by completely dissolving 20.0 grams of NaNO3 in 100.0 grams of water at 20.0°C. (the gram formula mass=85.0 grams per mole) Determine the minimum mass of NaNO3 that must be added to this unsaturated solution to make a

7. ## Algebra

define the following new variables X to A =W X to B =X Y to A =Y Y to B =Z w+x=32 y+z=8 w+y=22 x+z=18 You helped me solve for y Ijust added w+y=32 220w+300(32-w)+400(22-w)+180(8-y)=9280 , w+y=22 The answer I got was y=32 I solved for x and got x=42 I don't

8. ## English

i need this body paragraph edited please Various people believe that the building of an empire provides secure natural resources due to taking over territories owned by other countries. This ultra-nationalism can actually create a war due to an attempt of

9. ## sociology

history of urbanization in zinder can you help me with findo some history of urbanization in zinder? thank you

10. ## Merry Christmas

I want to wish everyone on this site a very merry christmas and a happy new year. I'd also like to thank every jiskha teacher and student that take their time to help others. Thank you Ms. Sue for all the help you've given me throughout the past.

11. ## earth Science

When a river is lengthened due to forward erosion, a _____ has occurred.

12. ## physics

A 0.145 kg baseball is pitched at 42 m/s. The batter hits it horizontally to the pitcher at 58 m/s. GIVEN: m = 0.145 kg v = 42 m/s batter v = 58 m/s a. Find the change in momentum of the ball. p = mv p = (0.145)(42) p = 6.09 --> What velocity would I use?

13. ## physics

A 0.200 kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.100 kg, which is moving along the same line at a speed of 0.10 m/s. After the collision, both balls continue moving in the same, original direction.

14. ## Physics

What is the net force acting on the ring in the diagram?

15. ## Physics

A race car can be slowed with a constant acceleration of -11 m/s^2 a. If the car is going 55 m/s, how many meters will it travel before it stops? b. How many meters will it take to stop a car going twice as fast?

16. ## Physics

How far does a plane fly in 15 s while its velocity is changing from 145 m/s to 75 m/s at a uniform rate of acceleration?

17. ## Physics

A stone that starts at rest is in free fall for 8.0 s. a.Calculate the stone's velocity after 8.0 s. b. What is the stone's displacement during this time? Given: t = 8.0 s a = 9.81 m/s^2 For a, in order to calculate the velocity, should i use d = vit + 1/2

18. ## Physics

A negative charge -Q is placed inside the cavity of a hollow metal solid. The outside of the solid is grounded. Q: Is there any excess charge induced on the inner surface of the piece of metal? A: Yes, +Q Q: Is there any excess charge on the outer surface

19. ## physics =)

A 0.200 kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.100 kg, which is moving along the same line at a speed of 0.10 m/s. After the collision, both balls continue moving in the same, original direction.