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

=> 
=> 
Answer:
<h2>a</h2><h2> move with an increasing velocity</h2>
Answer:
speed of light
Explanation:
it is speed because they are talking about speed in the equation
Answer:
The mass of Ar is 36.91g
Explanation:
The gas mixture consist of Neon(Ne) and Argon(Ar)
Partial pressure of Ar = total pressure of mixture - partial pressure = 4 - 0.3 = 3.7 atm
Mole fraction of Ar = partial pressure of Ar ÷ total pressure of mixture = 3.7/4 = 0.925
Mass of Ar = 0.925 × molecular weight of Ar = 0.925 × 39.9 = 36.91g
The minimum speed of the water must be 3.4 m/s
Explanation:
There are two forces acting on the water in the pail when it is at the top of its circular motion:
- The force of gravity, mg, acting downward (where m is the mass of the water and g the acceleration of gravity)
- The normal reaction, N also acting downward
Since the water is in circular motion, the net force must be equal to the centripetal force, so:

Where:

v is the speed of the pail
r = 1.2 m is the radius of the circle
The water starts to spill out when the normal reaction of the pail becomes zero:
N = 0
When this occurs, the equation becomes:

And substitutin the values of g and r, we find the minimum speed that the water must have in order not to spill out:

Learn more about circular motion:
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