Maria listed four important points about einstein’s special theory of relativity. 1) applies to any object moving more slowly th
1 answer:
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Answer:
The centripetal acceleration of the runner is .
Explanation:
Given that,
A runner completes the 200 m dash in 24.0 s and runs at constant speed throughout the race. We need to find the centripetal acceleration as he runs the curved portion of the track. We know that the centripetal acceleration is given by :
v is the velocity of runner
Centripetal acceleration,
So, the centripetal acceleration of the runner is . Hence, this is the required solution.
To minimize neutron leakage from a reactor, the ratio of the surface area to the volume should be a minimum. For a given volume V , ratio for (c) a parallelepiped of dimensions × 2 a will be
What will be the ratio of surface area and the volume of the parallelepiped
We will proceed by stating the equations of the surface area and the volume of each shape, and then identifying each of the surface area and the volume, we will take their ratios, and as it is asking for the shape which has the minimum surface area to volume ratio, therefore at some given volume, .
The parallelepiped whose dimension is given as
the surface area and the volume is given respectively by:
Let the volume be equal to the constant c, we get:
Hence the ratio is given by:
Calculating the constants, by substituting the value of in (3), we get:
To learn more about parallelepiped, refer to:
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