Answer:
See description
Explanation:
This is an example where we need Tornicelli's law, which states that the horizontal speed of a fluid that starts falling from an orifice is the same speed that an object acquires from free-falling.
we are given:
![h_{cilinder} = 0.2 [m]\\h = 0.05 [m]\\d=0.15[m]](https://tex.z-dn.net/?f=h_%7Bcilinder%7D%20%3D%200.2%20%5Bm%5D%5C%5Ch%20%3D%200.05%20%5Bm%5D%5C%5Cd%3D0.15%5Bm%5D)
the horizontal velocity of the water at the start is:
![v = \sqrt{2(9.8)(0.05)}=0.989949 [m/s]=1[m/s]](https://tex.z-dn.net/?f=v%20%3D%20%5Csqrt%7B2%289.8%29%280.05%29%7D%3D0.989949%20%5Bm%2Fs%5D%3D1%5Bm%2Fs%5D)
now we need to find the time for the water drops to fall d:
as the gravity is the only force interacting with the water we have:
replace for y = d
![0.15 = \frac{1}{2} g*t^2=>t=\sqrt{\frac{2*0.15}{9.8}}=0.1749[s]](https://tex.z-dn.net/?f=0.15%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20g%2At%5E2%3D%3Et%3D%5Csqrt%7B%5Cfrac%7B2%2A0.15%7D%7B9.8%7D%7D%3D0.1749%5Bs%5D%20)
now that we have t we notice that there are no horizontal forces interacting with the water, so the horizontal position is given by:
Finally, we replace v and t:
![x(2.45) = 1*0.1749 = 0.1749 [m]=17.49[cm]](https://tex.z-dn.net/?f=x%282.45%29%20%3D%201%2A0.1749%20%3D%200.1749%20%5Bm%5D%3D17.49%5Bcm%5D)
The answer is D, all responses are correct
Answer:
Rate at which current flows is measured in amperes
Explanation:
The rate of flow of electrons constitutes the current. The electrons flow from lower electric potential to higher electric potential. When there is no potential difference then no electron will flow. The direction of the current and the electron are in opposite direction.
The direction of electron from the negative terminal to the positive terminal. The direction of current is from the positive terminal to the negative terminal.The current is measured in ampere.
The expression for current and the charge is as;
Here, q is the charge, t is the time taken and I is the current.
According to the given problem, Jodi made a list about electric current to help her study for a test. He described that electrons move from areas of low to high electric potential, voltage causes current to flow and movement of electrons is continuous in a current.
But he did error. It should be "rate at which charges flow" instead of rate at which current flow.
Therefore, the option (4) is correct.
A change in an object's speed has a(n) _________ effect on its kinetic energy than a change in its mass = <span>A greater effect.</span>
