Answer:
<em>The wave is travelling in the ±z-axis direction.</em>
<em></em>
Explanation:
An electromagnetic wave has an oscillating magnetic and electric field. The electric and magnetic field both oscillate perpendicularly one to the other, and the wave travels perpendicularly to the direction of oscillation of the electric and magnetic field.
In this case, if the magnetic field is in the +x-axis direction, and the electric field is in the +y-axis direction, we can say with all assurance that the wave will be travelling in the ±z-axis direction.
Third
every action has an opposite and equal reaction
Answer:
Acceleration is the rate of change of velocity.
When the velocity of an object does not change, i.e., when the velocity is constant, the acceleration is <em>zero</em>.
Mathematically (differential form),
<h3><u>Zero</u> is the right answer.</h3>
The box weights more and has more mass than the worker pushing it.:) hope that helped:)
Answer:
36.3 kgm2
Explanation:
According to the conservation of angular momentum, the angular momentum is preserved before and after the child grab. Since the moments of inertia increase, the angular velocity decreases.
Let I be the moment of inertia of the merry-go-round and treat the child as a point particle, his moment of inertia would be
Hence the moment inertia of the child-merry-go-round system is:
I + 55.5
From here we can apply the conservation theory