Answer:
Parental resilience.
Social connections.
Knowledge of parenting and child development.
Concrete support in times of need.
Social and emotional competence of children.
Explanation:
according to google
Their purpose is to protect the weld area from oxygen, and water vapour.
Explanation:
are bhai brainly aap english me questions kar ne ko hai
ye kon si bhasha hai ??????
Answer:
Given in explanation.
Explanation:
First seperate the signal into components,
![(1 + 0.1 \cos5t)\cos100t=\cos100t+0.1 \cos5t\cos100t](https://tex.z-dn.net/?f=%281%20%2B%200.1%20%5Ccos5t%29%5Ccos100t%3D%5Ccos100t%2B0.1%20%5Ccos5t%5Ccos100t)
Now, we will use the identity given in the hint,
![\cos A \cos B = \frac{1}{2} (\cos(A+B) + \cos(A-B))\\\\\cos100t+0.1 \cos5t\cos100t=\cos100t + 0.05\cos105t + 0.05\cos95t](https://tex.z-dn.net/?f=%5Ccos%20A%20%5Ccos%20B%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20%28%5Ccos%28A%2BB%29%20%2B%20%5Ccos%28A-B%29%29%5C%5C%5C%5C%5Ccos100t%2B0.1%20%5Ccos5t%5Ccos100t%3D%5Ccos100t%20%2B%200.05%5Ccos105t%20%20%2B%200.05%5Ccos95t)
Now the signal is decomposed into its different components.
Accordingly,
![at\:\:100/(2*\pi) = 50/\pi \:Hz \:(16\:Hz)\:\:The \:\:amplitude\:\: is\:\: 1 \\at\:\:105/(2*\pi) = 52.5/\pi \:Hz \:(17\:Hz)\:\:The \:\:amplitude\:\: is\:\: 0.05 \\at\:\:95/(2*\pi) = 47.5/\pi \:Hz \:(15\:Hz)\:\:The \:\:amplitude\:\: is\:\: 0.05](https://tex.z-dn.net/?f=at%5C%3A%5C%3A100%2F%282%2A%5Cpi%29%20%20%3D%2050%2F%5Cpi%20%5C%3AHz%20%5C%3A%2816%5C%3AHz%29%5C%3A%5C%3AThe%20%5C%3A%5C%3Aamplitude%5C%3A%5C%3A%20is%5C%3A%5C%3A%201%20%5C%5Cat%5C%3A%5C%3A105%2F%282%2A%5Cpi%29%20%20%3D%2052.5%2F%5Cpi%20%5C%3AHz%20%5C%3A%2817%5C%3AHz%29%5C%3A%5C%3AThe%20%5C%3A%5C%3Aamplitude%5C%3A%5C%3A%20is%5C%3A%5C%3A%200.05%20%5C%5Cat%5C%3A%5C%3A95%2F%282%2A%5Cpi%29%20%20%3D%2047.5%2F%5Cpi%20%5C%3AHz%20%5C%3A%2815%5C%3AHz%29%5C%3A%5C%3AThe%20%5C%3A%5C%3Aamplitude%5C%3A%5C%3A%20is%5C%3A%5C%3A%200.05)
Since there is no other term within the cos function, the phase differences in all of the above cases are zero.