Answer: The speed of the edge of the wheel = 19.72m/s
Explanation:
The liner speed of the edge of the wheel is given as;
V=wr
V= linear speed =?
w= angular velocity =456rpm
Converting rpm to rad/s
1rpm = π/30 rad/s
456rpm = 47.75 rad/s
r=0.413m
V=47.75 × 0.413
V= 19.72m/s
Therefore speed of the edge of the wheel = 19.72m/s
Answer:
4
Explanation:
because amplitude of a sound wave is related to loudness of the sound, so the higher the amplitude, the louder the sound
hope this helps
Explanation:
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Answer: The correct option is that the axe handle applying a force to the person's hand.
Explanation:
This reaction force is due to Newton's third law of motion. This law states that for every action there is equal and opposite reaction to it. This implies that when a force is being exerted on a surface, the surface must exert a force that is equal and opposite in direction to the exerting force. This law represents a certain symmetry in nature that forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.
A typical example of Newton's third law includes:
--> When you hit a tree with an axe: with your hand you exert a force on the tree with the intention to cut it down(action force). The same force you excreted on the tree would be felt in your hands (reaction force).
--> when air rushes out of a balloon: when air escapes for a balloon, the opposite reaction is that the balloon flies up.