Answer:
1.98V
Explanation:
V =IR
V =Voltage
I =Current
R = Resistance
2. Determine the current in a 120-watt bulb plugged into a 120-volt outlet.
1 answer:
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Answer:
The angle of incidence is
Explanation:
The diagram for this question is shown on the first uploaded image
From the question we are told that
The distance between the mirror and the wall is
The height of the above the mirror is
Generally the angle which the reflected ray make with the mirror is mathematically evaluated as
substituting values
From the diagram we can deduce that the angle of incidence is
So
The impulse (the variation of momentum of the ball) is related to the force applied by
where
is the variation of momentum, F is the intensity of the force and 
is the time of application of the force.
Using F=1000 N and
, we can find the variation of momentum:
This can be rewritten as
where
and 
are the final and initial momentum. But the ball is initially at rest, so the initial momentum is zero, and
from which we find the final velocity of the ball:
where
Using F=1000 N and
This
where
from which we find the final velocity of the ball: