Answer:toasters, doorbells, radio speakers, vacuum cleaners, computers, cars
Answer:
7.23407
Explanation:
(I will not include units in calculations)
I'm assuming FBD's are already drawn, so I will work from there.
Let the 2.2kg block equal , and the 20kg block equal .
Summation equation for : ,
Summation equation for :
Torque Summation Equation:
Do some plugging in with the values given:
Replace with , and cancel out the r's.
This step is important: Rearrange the force summation equation to solve for each tension force.
Perform Substitution:
Now, we need to find the friction force and the horizontal component of the force of gravity.
Note that μ
And based on our earlier summation equation:
First, break into x and y components. ,
Perform substitution with this and the fact that .
Solving for a, plugging in numbers yields an answer of 7.23407
We know, Atomic mass = Atomic number + number of neutrons
Here, Atomic mass - 50 = number of neutrons [ as A.N. = 50 ]
So, According to our info. only option B can be correct, as the difference between atomic mass & number of neutrons is 50, which is atomic number of Tin (Sb)
In short, Your Answer would be Option B
Hope this helps!
Answer:
Noble gases because they have a full outer shell of electrons.
Explanation:
Noble gases usually called inert gases are generally non reactive gases. They belong to group 18 elements.They tend to not gain the electron or not give up a electron as they have full valence shells. Because they already have full valence shell and therefore full outer energy level, they are very stable and hardly react with any other elements.