What is characteristic of the strong nuclear force?
a. it exists only within electrons.
b. it acts over a very small distance.
c. it is responsible for most chemical reactions.
d. it was discovered in 1882.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

2select the correct answer. javed suffers from a severe food allergy. which device should javed always carry? a. inhaler b. epi pen c. nebulizer d. insulin pen

If you held a stone over the mouth of a well and then let it go , what would happen to the stone? explain your answer.