List things in your house and put them in order of density
2 answers:
You might be interested in
Answer:
The value is
Explanation:
From the question we are told that
The weight of the horizontal solid disk is
The radius of the horizontal solid disk is
The force applied by the child is
The time considered is
Generally the mass of the horizontal solid disk is mathematically represented as
=>
=>
Generally the moment of inertia of the horizontal solid disk is mathematically represented as
=>
=>
Generally the net torque experienced by the horizontal solid disk is mathematically represented as
=>
=>
=>
Gnerally from kinematic equation we have that
Here is the initial angular velocity velocity of the horizontal solid disk which is
So
=>
Generally the kinetic energy is mathematically represented as
=>
=>
(a) We can find the current flowing between the walls by using Ohm's law:
where
is the potential difference and 
is the resistance. Substituting these values, we get
(b) The total charge flowing between the walls is the product between the current and the time interval:
The problem says
, so the total charge is
The current consists of Na+ ions, each of them having a charge of
. To find the number of ions flowing, we can simply divide the total charge by the charge of a single ion:
where
(b) The total charge flowing between the walls is the product between the current and the time interval:
The problem says
The current consists of Na+ ions, each of them having a charge of