Both matter and energy can eneter and exit an <span>Open System only. A.</span>
Answer:
No, it will not affect the results.
Explanation:
For elastic collisions in an isolated system, when a collision occurs, it means that the systems objects total momentum will be conserved under the condition that there will be no net external forces that act upon the objects.
What that means is that if the pucks start spinning after the collision, we are not told that there was any net external force acting on the puck and thus momentum will be conserved because momentum before collision will be equal to the momentum after the collision.
Answer:
C
Explanation:
Ore is usually refined once digged out to make certain things
Answer:
After 9 seconds the object reaches ground.
Step-by-step explanation:
We equation of motion given as h = -16t²+128t+144,
We need to find in how many seconds will the object hit the ground,
That is we need to find time when h = 0
0 = -16t²+128t+144
16t²-128t-144= 0
![t=\frac{-(-128)\pm \sqrt{(-128)^2-4\times 16\times (-144)}}{2\times 16}\\\\t=\frac{128\pm \sqrt{25600}}{32}\\\\t=\frac{128\pm 160}{32}\\\\t=9s\texttt{ or }t=-1s](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B-%28-128%29%5Cpm%20%5Csqrt%7B%28-128%29%5E2-4%5Ctimes%2016%5Ctimes%20%28-144%29%7D%7D%7B2%5Ctimes%2016%7D%5C%5C%5C%5Ct%3D%5Cfrac%7B128%5Cpm%20%5Csqrt%7B25600%7D%7D%7B32%7D%5C%5C%5C%5Ct%3D%5Cfrac%7B128%5Cpm%20160%7D%7B32%7D%5C%5C%5C%5Ct%3D9s%5Ctexttt%7B%20or%20%7Dt%3D-1s)
Negative time is not possible, hence after 9 seconds the object reaches ground.
In this case, the resistance for the diagram shown in the figure is located at point D. The symbol that best represents a resistance in an RLC diagram is one that is similar to that of point D.
Also, remember that by definition V = I * R.
The answer is D.