Acceleration can be found using one of the following suvat equations:
Explanation:
The acceleration of an object is defined as the rate of change of velocity of the object:
where
v is the final velocity
u is the initial velocity
t is the time taken for the velocity to change from u to t
There are several equations used to find the acceleration of an object moving in a straight line (they are usually called suvat equation). Depending on which quantities are given in the problem, you can use one of the following equations:
where
is the acceleration
is the distance covered
is the time
is the initial velocity
is the final velocity
Learn more about acceleration and suvat equations:
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Answer:
According to Ohm's law :
Where,
V is the potential difference or voltage.
I is the current flowing in a circuit.
R is the resistance.
The SI unit of potential difference is Volt. It is denoted as V.
The SI unit of current is Ampere. It is denoted as A.
The unit for resistance is :
It is equivalent to Ohm or .
Hence, the correct option is (a) " volt ÷ ampere ".
The tip of the fan moves through the outer side of the circle.
So it moves a distance of perimeter of circle in one revolution.
Perimeter of circle = 2r, where r is the radius of circle.
In this case radius of circular motion = 0.19 meter
So perimeter of circle = 2*0.19 = 0.38 = 1.194 m
So distance does the tip move in one revolution = 1.194 meter