Answer:
4.5g/cm^3
Explanation:
Here, Mass(m)=67.5g
Volume(v)=15cm^3
Now, According to formula,
Density(p)=m/v
=67.5/15
=4.5g/cm^3
Answer: The average velocity is 150 km/h
Explanation: 70+80=150
S=Vt
110=V(72)
110/72=V
V=1.527m/s
Your answer is A
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