4. Intermediate conductivity and a low melting point.
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Answer:
I think milligram is the correct answer.
Answer:
65.625 m/s
Explanation:


c = Speed of light = 3×10⁸ m/s
Relative speed

Relative speed = 35.625 m/s
Velocity of speeder = Velocity of police car + Relative speed
⇒Velocity of speeder = 30 + 35.625 = 65.625 m/s
∴ Velocity of speeder is 65.625 m/s
Answer:
2N
Explanation:

The torques generated by tangential forces on the 2 wheels are


According to Newton's 2nd law, the angular accelerations generated by these torque would be


For the 2nd wheel to have the same angular acceleration, its force must be



1. They could have different types of sounds, so wave-shape could be different.
2. If they have the same frequency, the volume is different, so they could have different amplitudes (larger amplitude = larger sound).
3. Different frequencies based on the pitches