Describe the energy transformations that take place when a skier starts skiing down a hill but after a time is brought to rest b
1 answer:
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Answer:
Rocket 2 has highest acceleration.
Explanation:
Net force,
F = mass (m) × acceleration (a)
We have,
m₁ = 4.25 kg and F = 120 N
m₂ = 3.25 kg, F₂ = 120 N
m₃ = 5.5 kg, F₃ = 120 N
m₄ = 4.5 kg, F₄ = 120 N
Hence, it can be seen that the highest acceleration is of rocket 2.
Answer:
1. The change in temperature of the material.
2. The length of the material.
3. The type of material.
Explanation:
The term linear expansion is defined as the increase in length of any conductor when there is a change in temperature. The new length of any wire or rod is given by :
is the initial length of the rod
is the coefficient of linear expansion
is the change in temperature
It is clear that the linear expansion of a material depends on :
1. The change in temperature of the material.
2. The length of the material.
3. The type of material.
So, all options are correct.