To solve this problem it is necessary to apply the concepts related to rotational kinetic energy, the definition of the moment of inertia for a sphere and the obtaining of the radius through the circumference. Mathematically kinetic energy can be given as:
Where,
I = Moment of inertia
Angular velocity
According to the information given we have that the radius is
With the radius obtained we can calculate the moment of inertia which is
Finally, from the energy equation and rearranging the expression to obtain the angular velocity we have to
Therefore the angular speed will the ball rotate is 25.95rad/s
Im pretty sure it’s a because it makes more sense you know?.
Answer:
The direction of propagation is west.
Explanation:
We know that electromagnetic waves (EM-waves) are transverse in nature. EM-waves containing electric field and magnetic field both are perpendicular to the each other ( E ⊥ B ).
Transverse waves : the direction of propagation is perpendicular to the direction of amplitude which we call transverse waves. eg : light waves, water waves, gravitational waves etc.
Here, in our case the direction of electric field is pointing upward to the plan of the screen and the direction of magnetic field is pointing north
∴ 
× 
Where 
direction of electric field, 
direction of magnetic field, 
direction of propagation at particular instant.
Above equation follows right hand rule. put your finger toward you (out of the screen) then curl to the north side then the thumb will give you the direction of the wave propagation ( west side )
In our case west direction is the direction of wave propagation.
Answer:
6.309573e+16 joule is released by an earthquake of magnitude 8
Answer:
Take a look at the attachment below.
Explanation:
