Answer:
The spring constant of the spring is 180 N/m.
Explanation:
It is given that,
Mass of the block, m = 0.42 kg
The block is pulled so that the spring stretches for 2.1 cm relative to its unstained length.
When the block is released, it moves with an acceleration of
. We need to find the spring constant of the spring. For a block to be in equilibrium, the net force is given by :
![kx=ma](https://tex.z-dn.net/?f=kx%3Dma)
k is spring constant of the spring
![k=\dfrac{ma}{x}\\\\k=\dfrac{0.42\times 9}{2.1\times 10^{-2}}\\\\k=180\ N/m](https://tex.z-dn.net/?f=k%3D%5Cdfrac%7Bma%7D%7Bx%7D%5C%5C%5C%5Ck%3D%5Cdfrac%7B0.42%5Ctimes%209%7D%7B2.1%5Ctimes%2010%5E%7B-2%7D%7D%5C%5C%5C%5Ck%3D180%5C%20N%2Fm)
So, the spring constant of the spring is 180 N/m.
Answer: 3 H
An acid consists of a hydrogen {positive radical} and a halogen or negative radical. When it is dissolved in water, the ionic bond is broken and ions are separated. The free H+ radical gets attracted to Hydrogen of water H2O and so it forms H3O+. The ionic bond gets weaker in water as electromagnetic forces are weak in water as water is dielectric medium.
The answer is C.
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Answer:
To use them in future projects and saving the community.
Explanation:
An explanation about using them in future projects is that you can, for example, use plastic for a biology project. It's also a proven fact that recycling can help the environment so there will be less pollution due to having certain recyclables in the wrong places such as the ocean.