Answer:
The potential energy of an object is the energy possessed by the object due to its position in a gravitational field.
Mathematically, it is given by:
where
m is the mass of the object
g is the acceleration due to gravity at the location of the object
h is the height of the object
As we can see, the potential energy depends on the height of the object, h.
However, this height is relative, since it can be measured using different reference levels.
Generally, the reference level is taken to be the ground; so for example, an object located at the top of a cliff 40 m above the ground, has
h = 40 m
But this value is of course relative, since we can also take the reference level to be the top of the cliff, so in that case, we would have
h = 0
Using the rotational equivalent of force:
Which is T = I*Alpha
Where: T is torque, I is the moment of inertia and Alpha is
the angular acceleration.
This is for the flywheel: J = 1/2mr^2 = 5*3^2 = 45
kgm^2
From the equation:
T = J*dω/dt
we get:
Δt = J*Δω/T = 45*8.13/110.0 = 3.326 sec
Answer:
500 feet
Explanation:
It's stipulated that a minimum horizontal distance of 2000 feet from clouds should be allowed for VFR flights but at a night, the minimum distance below clouds requirement for VFR flight outside controlled airspace at altitudes of more than 1200 feet AGL, but less than 10000 feet MSL should be 500 feet.
I'd say C to avoid situations in which alcohol is present and remain alcohol free
Refusal skills help people, most likely children it helps them avoid participating in risky behaviors and choices. such like alcohol in this case
Refusal skills Helps them resist peer pressure and help them make right choices
Hope that helps alrighty bye now!
