the answer is b trust me its b
Answer:
80 J
Explanation:
Ep = mgh
Ep = (4 kg) (10 m/s²) (2 m)
Ep = 80 J
The direction of torque τ this method is mathematically given as
D=X
Option A is correct.
<h3>What is the
direction of
torque?</h3>
Generally, the equation for torque is mathematically given as
τ = r X F
Hence to decipher the torque direction with respect to the center of mass of the body due to force F acting on the body at a location indicated by the vector r
- We utilize our right hand.
- Place our right-hand fingers along the path of r
- Place our right-hand palm on F
- Then slowly we sweep r into F.
- The path or direction of the thumb will provide the direction of the torque.
In conclusion, the direction of this method is
D=X Option A.
Read more about torque
brainly.com/question/6855614
#SPJ1
Answer:
- The number of electrons transferred is
![3.0625 \ 10^{13}](https://tex.z-dn.net/?f=3.0625%20%5C%2010%5E%7B13%7D)
- The electrons flow from you to the faucet.
- You induce a positive charge in the faucet.
- The electrons flow from the faucet to the cat.
Explanation:
<h3>a)</h3>
The number of electrons will be given by
![number \ of \ electrons = \frac{charge \ transferred}{charge \ of \ the \ electron}](https://tex.z-dn.net/?f=number%20%5C%20of%20%5C%20electrons%20%3D%20%5Cfrac%7Bcharge%20%5C%20transferred%7D%7Bcharge%20%5C%20of%20%5C%20the%20%5C%20electron%7D)
so, we have:
![number \ of \ electrons = \frac{ - 4.90 \mu C}{- 1.602 \ 10^{-19} \ C}](https://tex.z-dn.net/?f=number%20%5C%20of%20%5C%20electrons%20%3D%20%5Cfrac%7B%20-%204.90%20%5Cmu%20C%7D%7B-%201.602%20%5C%2010%5E%7B-19%7D%20%5C%20C%7D)
![number \ of \ electrons = 3.0625 \ 10^{13}](https://tex.z-dn.net/?f=number%20%5C%20of%20%5C%20electrons%20%3D%203.0625%20%5C%2010%5E%7B13%7D)
<h3>b)</h3>
The electrons flow from you, that are charged with electrons, to the faucet, that is discharged.
<h3>c)</h3>
As you approach the faucet, the electrons in your body will repel the electrons in the faucet, inducing a positive charge in it.
<h3>d)</h3>
The cat is charged with a positive charge, as many electron originally from him were transferred to your body, when the cat touch the faucet, the electrons will flow to the cat.