Answer:
Explanation:
As we know that blades are moving at speed of 6200 rpm
so here we can say that
now we know that angular speed is given as
now it comes to rest after t = 4.3 s
so angular acceleration is given as
DC motors use a brush and commuter
Answer:
6J
Explanation:
Given parameters:
Mass of fish = 1kg
Velocity = 12m/s
Unknown:
Change in kinetic energy = ?
Solution:
Kinetic energy is the energy due to the motion of a body. It is mathematically given as:
K.E = m v²
Now, insert the parameters and solve;
K.E = x 1 x 12 = 6J
The change in kinetic energy is 6J