The components that must be present for work to be considered is a force and a movement in the same direction as the force. In the basic definition of work, a magnitude and displacement that occurs in the same direction is what makes up work. Among the choices, the correct answer is the first one.
Answer:
it gives off a range of electromagnetic radiation of shorter wavelengths.
Explanation:
I took the test
<span>The statement, The word atom
comes from a Greek word that means “able to duplicate”, is false. The greek
word for atom is atomos. The a- in atom means “not” and –tom means “cut”. So it
is not ot cut or it cannot be cut. It is common definition is indivisibility. This
definition is defined by the philosopher Democritus. He observed that as he cut
the sugar cube into smaller fraction, it reduces to nothing that cannot be seen
in the eye. And so he proposed that definition.</span>
Answer:
Explanation:
We use the following rotational kinematic equation to calculate the angular acceleration of the rod:
Here 
is the final angular speed, 
is the initial angular speed and 
is the angular acceleration. The rod starts rotating from rest (
):
Recall that the angular speed is defined in function of the tangential speed (v) and the radius (r) of the circular motion:
In this case the radius is given by 
. Replacing (2) in (1):
