Answer:
<h2>The answer is  planetary motion</h2>
Explanation:
According to Johannes Kepler, the laws governing planetary motion
 states that:
1. The orbit of a planet is an ellipse with the Sun at one of the two foci.
2. A line segment joining a planet and the Sun sweeps out equal areas          
    during equal intervals of time.
3. The square of a planet's orbital period is proportional to the cube of the semi-major of its orbit.
Johannes Kepler was a German astronomer, mathematician, and astrologer
Born: 27 December 1571, Weil der Stadt, Germany
Died: 15 November 1630
 
        
             
        
        
        
The angular velocity of the wheel at the bottom of the incline is 4.429 rad/sec
The angular velocity (ω) of an object is the rate at which the object's angle position is changing in relation to time. 
For a wheel attached to an incline angle, the angular velocity can be computed by considering the conservation of energy theorem. 
As such the total kinetic energy (K.E) and rotational kinetic energy (R.K.E) at a point is equal to the total potential energy (P.E) at the other point.
i.e.
P.E = K.E + R.K.E







Therefore, we can conclude that the angular velocity of the wheel at the bottom of the incline is 4.429 rad/sec
Learn more about angular velocity here:
brainly.com/question/1452612
 
        
                    
             
        
        
        
Answer:
Magnetism at atomic /sub - atomic levels is mostly due to charged particles called electrons. Electrons have spin which give them angular momentum and thus a magnetic moment associated with it. That is the cause of Magnetism at atomic levels. Electrons fill up orbitals in atoms in pairs.
 
        
             
        
        
        
Answer:
Manage your weight 
Have lower blood pressure 
Lower your risk of falls 
it reduces your risk of heart attack
 
        
             
        
        
        
Answer:
15.6m/s
Explanation:
V1= because the derivate of the position is the velocity
 because the derivate of the position is the velocity
V1=12t+3
V2=20+ -8t because the integral of the acceleration is the velocity
-8t because the integral of the acceleration is the velocity
V2=
V1=V2 to see when the velocities of particles match
12t+3=20-4t^2
4t^2+12t-17=0 we resolve this with 
and we take the positif root 
t=1.05 sec
if we evaluate the velocity (V1 or V2) the result is 15.6m/s