D. salt and water do not produce a chemical reaction, rather a physical one, thats why the salt stays behind after the water disappears... because it never changed other than its physical appearance
SAT is a standardized test widely used for college admissions in the United States
The full form of SAT is the Scholastic Assessment Test.
It is one of the best entrance tests to get admission abroad.
A because the school needs to find out what you plan on doing and what your good at.
The relationship between the magnitude of the force of tension and the force of friction is; Ff = (r/R)Ft
<h3>What is Rotational Acceleration?</h3>
We are given;
mass of spool = M
Radius = R
moment of inertia = I.
Now, the spool is not moving and as such;
r < R which means there is net torque = 0
Thus;
Ff × R = Ft × r
>> Ff = (r/R)Ft
Finally, the angular acceleration is expressed as;
α = a/R
Read more about Rotational Acceleration at: brainly.com/question/16968864