Atruck with 0.420 m radius tires travels at 32 m/s. what is the angular velocity of the rotating tires in radians per second? what is the angular velocity of the rotating tires in rev/min?

Answer : and  

Explanation :

It is given that,

The radius of the truck, r = 0.420 m

Velocity of the truck, v = 32 m/s

We have to find the angular velocity of the rotating tires.

The relation between the angular velocity and the linear velocity is :

is the angular velocity

We know that, 1 revolution = 2π radian

So,

Hence, this is the required solution.

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the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.