Answer:
0.186 N-m
Explanation:
mass of the grindstone, 
radius, 
Frequency, 
time, 
final angular velocity, 
Initial angular velocity,

Angular acceleration of the grind stone is:

Moment of inertia:


Torque exerted by the ax on the grind stone is:

Answer:
elastic potential energy
You input potential (stored) energy into the rubber band system when you stretched the rubber band back. Because it is an elastic system, this kind of potential energy is specifically called elastic potential energy.
Explanation:
Characteristics help us to classify seeds because different plants have different features.
<h3>How are characteristics used to identify and classify plants?</h3>
The divisions classify plants that are based on whether they reproduce by spores or seeds. Spore-bearing plants include ferns, club mosses, and horsetail while on the other hand, Seed-bearing plants are divided into gymnosperms and angiosperms. Different plants have different characteristics and features so on the basis of these characteristics we can easily classify seeds whether they belong from angiosperm and gymnosperm.
So we can conclude that characteristics help us to classify seeds because different plants have different features.
Learn more about seeds here: brainly.com/question/18799172
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Answer:
480
Explanation:
resistance equals to potential difference divide by electric current
120÷0.25
=480