Because Helium fusion in a shell outside the core generates enough thermal pressure to push the upper layers outward.
Answer:
acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities. The orientation of an object's acceleration is given by the orientation of the net force acting on that object.
SI unit: m/s2, m·s−2, m s−2
The answer is <span>All of the above.
Hope this helps.
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To simplify a fraction, we have to divide the numerator and the denominator by the same number. In this case, both aspects of the fraction are divisible by 9.
When we divide the numerator by 9 we get 3
When we divide the denominator by 9 we get 7
So, the simplest form of 27/63 is 3/7
Answer:
do you mean before we used fossil fuels? steam.before steam? fire was used for like ...125,000 years ago. we were not smart back then but we were smart enough.
Explanation: