3750 seconds to travel that far
Answer:
A_resulting = 0.2 m
Explanation:
Let's analyze the impact of the pulse with the pole, this is a fixed obstacle that does not move therefore by the law of action and reluctant, the force that the pole applies on the rope is of equal magnitude to the force of the rope on the pole (pulse), but opposite directional, so the reflected pulse reverses its direction and sense.
With this information we analyze a point on the string where the incident pulse is and each reflected with an amplitude A = 0.1 m, the resulting is
A_res = 2A
A_resultant = 2 .01
A_resulting = 0.2 m
Answer:
the same stones distance will be condtant .
so option no E
Answer:
<em>The centripetal acceleration would increase by a factor of 4</em>
<em>Correct choice: B.</em>
Explanation:
<u>Circular Motion</u>
The circular motion is described when an object rotates about a fixed point called center. The distance from the object to the center is the radius. There are other magnitudes in the circular motion like the angular speed, tangent speed, and centripetal acceleration. The formulas are:
![v_t=w\ r](https://tex.z-dn.net/?f=v_t%3Dw%5C%20r)
![\displaystyle a_c=\frac{v_t^2}{r}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20a_c%3D%5Cfrac%7Bv_t%5E2%7D%7Br%7D)
If the speed is doubled and the radius is the same, then
![\displaystyle a_c=\frac{(2v_t)^2}{r}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20a_c%3D%5Cfrac%7B%282v_t%29%5E2%7D%7Br%7D)
![\displaystyle a_c=4\frac{v_t^2}{r}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20a_c%3D4%5Cfrac%7Bv_t%5E2%7D%7Br%7D)
The centripetal acceleration would increase by a factor of 4
Correct choice: B.