Answer:
B) Yes, but only those electrons with energy greater than the potential difference established between the grid and the collector will reach the collector.
Explanation:
In the case when the collector would held at a negative voltage i.e. small with regard to grid So yes the accelerated electrons would be reach to the collecting plate as the kinetic energy would be more than the potential energy that because of negative potential
so according to the given situation, the option b is correct
And, the rest of the options are wrong
Answer:
(-1.5,-1.5)m
Explanation:
we know that:
where 
is the location of the center of gravity in the axis x, 
is the mass of the object i and 
the first coordinate of center of gravity of object i.
so:
Where 
is the first coordinate of the center of gravity for the fourth object.
Therefore, solving for , we get:
At the same way:
where 
is the location of the center of gravity in the axis y, is the mass of the object i and 
the second coordinate of center of gravity of object i. replacing values we get:
Where 
is the second coordinate of the center of gravity for the fourth object.
solving for :
It means that the object of mass 8kg have to be placed in the
coordinates (-1.5,-1.5) m.
Answer:
acceleration
Explanation:
The rate at which velocity changes is the definition of the physical quantity called acceleration, and it is given by the formula: 
where 
is the time that took to change from the initial velocity 
to the final velocity 
