Meters per second squared:
![\frac{m}{s^{2}}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%7D%20%20%20)
If you think about it, acceleration is about how fast speed changes. Speed is measured in meters per second:
![\frac{m}{s}](https://tex.z-dn.net/?f=%20%5Cfrac%7Bm%7D%7Bs%7D%20)
So if you take that and just measure it over time, you get meters per second squared.
Answer:
3 electrons from nitrogen and 3 from carbon while carbon already has a lone pair along with a negative charge (called cyanide)
Answer:
Minimum work = 5060 J
Explanation:
Given:
Mass of the bucket (m) = 20.0 kg
Initial speed of the bucket (u) = 0 m/s
Final speed of the bucket (v) = 4.0 m/s
Displacement of the bucket (h) = 25.0 m
Let 'W' be the work done by the worker in lifting the bucket.
So, we know from work-energy theorem that, work done by a force is equal to the change in the mechanical energy of the system.
Change in mechanical energy is equal to the sum of change in potential energy and kinetic energy. Therefore,
![\Delta E=\Delta U+\Delta K\\\\\Delta E= mgh+\frac{1}{2}m(v^2-u^2)](https://tex.z-dn.net/?f=%5CDelta%20E%3D%5CDelta%20U%2B%5CDelta%20K%5C%5C%5C%5C%5CDelta%20E%3D%20mgh%2B%5Cfrac%7B1%7D%7B2%7Dm%28v%5E2-u%5E2%29)
Therefore, the work done by the worker in lifting the bucket is given as:
![W=\Delta E\\\\W=mgh+\frac{1}{2}m(v^2-u^2)](https://tex.z-dn.net/?f=W%3D%5CDelta%20E%5C%5C%5C%5CW%3Dmgh%2B%5Cfrac%7B1%7D%7B2%7Dm%28v%5E2-u%5E2%29)
Now, plug in the values given and solve for 'W'. This gives,
![W=(20\ kg)(9.8\ m/s^2)(25\ m)+\frac{1}{2}(20\ kg)(4^2-0^2)\ m^2/s^2\\\\W=4900\ J +160\ J\\\\W=5060\ J](https://tex.z-dn.net/?f=W%3D%2820%5C%20kg%29%289.8%5C%20m%2Fs%5E2%29%2825%5C%20m%29%2B%5Cfrac%7B1%7D%7B2%7D%2820%5C%20kg%29%284%5E2-0%5E2%29%5C%20m%5E2%2Fs%5E2%5C%5C%5C%5CW%3D4900%5C%20J%20%2B160%5C%20J%5C%5C%5C%5CW%3D5060%5C%20J)
Therefore, the minimum work that the worker did in lifting the bucket is 5060 J.
Answer:
A + B = C Ax = 2 Ay = 0 Bx = 0 By = 6
Ax + Bx = Cx = 2
Ay + By = Cy = 6
C = (2^2 + 6^2)^1/2 = 6.32
Tan Cy / Cx = 6 / 2 = 3
Cy at 71.6 deg
Answer:
8) d
9) c
<em>Hope this helps! :)</em>