Answer:
Explanation:
Given
mass of spring ![m=100\ gm](https://tex.z-dn.net/?f=m%3D100%5C%20gm)
extension in spring ![x=5\ cm](https://tex.z-dn.net/?f=x%3D5%5C%20cm)
downward velocity ![v=70\ cm/s](https://tex.z-dn.net/?f=v%3D70%5C%20cm%2Fs)
Position in undamped free vibration is given by
![u(t)=A\cos \omega _0t+B\sin \omega _0t](https://tex.z-dn.net/?f=u%28t%29%3DA%5Ccos%20%5Comega%20_0t%2BB%5Csin%20%5Comega%20_0t)
where ![\omega _0^2=\frac{k}{m}](https://tex.z-dn.net/?f=%5Comega%20_0%5E2%3D%5Cfrac%7Bk%7D%7Bm%7D)
also ![\frac{k}{m}=\frac{g}{L}](https://tex.z-dn.net/?f=%5Cfrac%7Bk%7D%7Bm%7D%3D%5Cfrac%7Bg%7D%7BL%7D)
![\omega _0^2=\frac{k}{m}=\frac{9.8}{0.05}](https://tex.z-dn.net/?f=%5Comega%20_0%5E2%3D%5Cfrac%7Bk%7D%7Bm%7D%3D%5Cfrac%7B9.8%7D%7B0.05%7D)
![\omega _0=14](https://tex.z-dn.net/?f=%5Comega%20_0%3D14)
![u(t)=A\cos(14t)+B\sin(14t)](https://tex.z-dn.net/?f=u%28t%29%3DA%5Ccos%2814t%29%2BB%5Csin%2814t%29)
it is given
![u(0)=0](https://tex.z-dn.net/?f=u%280%29%3D0)
![u'(0)=70\ cm/s](https://tex.z-dn.net/?f=u%27%280%29%3D70%5C%20cm%2Fs)
substituting values we get
![A=0](https://tex.z-dn.net/?f=A%3D0)
![u(t)=B\sin (14t)](https://tex.z-dn.net/?f=u%28t%29%3DB%5Csin%20%2814t%29)
![u'(t)=14B\cos (14t)](https://tex.z-dn.net/?f=u%27%28t%29%3D14B%5Ccos%20%2814t%29)
![70=14B](https://tex.z-dn.net/?f=70%3D14B)
![B=\frac{10}{2}](https://tex.z-dn.net/?f=B%3D%5Cfrac%7B10%7D%7B2%7D)
![B=5](https://tex.z-dn.net/?f=B%3D5)
![u(t)=5\sin (14t)](https://tex.z-dn.net/?f=u%28t%29%3D5%5Csin%20%2814t%29)
<span>Answer: Burrhus Frederic Skinner's Operant Conditioning.
</span><span>B.F. Skinner believed that to understand behavior, in the best way, is to look at the root causes or reasons of an action and its outcomes.
</span>
Skinner proposes the Law of Effect-Reinforcement. Here,he differentiated the positively reinforced behavior or the strengthened behavior, the negatively reinforced behavior (removal of the unpleasant experience), and weakened behavior because of punishment.
<span>
In positive reinforcement, behavior is strengthened through providing an outcome, an effect that an individual finds rewarding. Negative reinforcement also strengthens behavior because the unpleasant experience was removed. Punishment on the other hand is an opposite to reinforcement. Instead of increasing the response, it eliminates it or weakens it.
</span>
For the answer to the question above
Forecasting how a business might do in the future.
Calculating tax.
Doing basic payrolls.
Calculating Revenues.
Producing charts.
--Going past 5--
Inventory tracking
Very (VERY) basic CRM for small businesses
I hope my answer helped you.
A car of mass 1535 kg collides head-on with a parked truck of mass 2000 kg. Spring mounted bumpers ensure that the collision is essentially elastic. If the velocity of the truck is 17 km/h (in the same direction as the car's initial velocity) after the collision, what was the initial speed of the car <u>20kmh</u>
<h3>What is
collision ?</h3>
A collision in physics is any situation in which two or more bodies quickly exert forces on one another. Despite the fact that the most common usage of the word "collision" refers to situations in which two or more objects clash violently, the scientific usage of the word makes no such assumptions.
The following are a few instances of physical encounters that scientists might classify as collisions:
- Legs of an insect are said to collide with a leaf when it falls on one.
- Every contact of a cat's paws with the ground while it strides across a lawn is seen as a collision, as is every brush of its fur with a blade of grass.
To learn more about collision from the given link:
brainly.com/question/27736776
#SPJ4
Answer:
Whats up Bmw,
The organisms is caused when both the organisms or species are harmed, which is limited supply of at least one resource from food or even water used by both can be a factor.
Explanation:
Hope I helped you, and let me know if you need help on anything else :p