The statement 'all energy in the universe is a result of mass being converted into energy' correctly describes mass-energy equivalence.
<h3>What is mass-energy equivalence?</h3>
The expression mass-energy equivalence refers to the proportion of matter that can be converted into energy in the universe.
This mass-energy equivalence is an outcome of process of converting mass into energy.
In conclusion, the statement 'all energy in the universe is a result of mass being converted into energy' correctly describes mass-energy equivalence.
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Answer: they used seasonal wind, temperature changes, they also used the flooding of rivers. all these are used to tell time
Explanation: the seasons change the climate of the area
Position 1 I believe because that is when the potential energy is released on the downfall
(a) Centripetal: , tangential:
The radius of the track (which is the distance of the car from the centre of the circular path) is
r = 0.30 km = 300 m
The angular acceleration is
We can find the angular velocity of the car after half of a lap using the equivalent of the SUVAT equation for rotational motions:
where
since the car starts from rest
is the angular displacement after half a lap
Solving for ,
Now we can find the centripetal acceleration with the formula:
while the tangential acceleration is simply given by
(b) The mass of the car is not given, so it is not possible to find the forces.