Answer:
Newtons Second Law of Motion
Explanation:
No, aluminum has a density near 2.7 g/cm^3
<span>7.8 g/cm^3 is near the density of iron (or in the case of a fork, steel).
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Answer:
Option A
Explanation:
At segment T-U, the substance changes from a liquid to a gas and does not change temperature.
The reason is because latent heat of vaporisation allows for the absorption of heat in the change of state and temperature remains constant until it has fully changed state.
Answer:
Explanation:
Given that,
Block of mass M= 6kg
Initially at rest u =0
A force F = 12N is used in pulling it along the horizontal
Distance moved s = 3m
Speed.
Using Newton second law
ΣFx = ma
12 = 6a
Then, a = 12/6
a = 2m/s²
Then, using equation of motion
v² = u² + 2as
v² = 0² + 2×2×3
v² = 0 + 12
v = √ 12
v = 3.46 m/s