Please talk about the earths layers and plate tectonics when answering
1 answer:
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Answer:
W = 907963.50 J = 907.96 J
Explanation:
Note: Refer to the figure attached
Now, from the figure we have similar triangles ΔAOB and ΔCOD
we have
or
Now, the work done to empty the tank can be given as:
or
or
or
or
or
or
W = 907963.50 J = 907.96 J
The smallest size of the insect that the bats can detect corresponds to the wavelength of the chirp they emit.
Their chirp has a frequency of
and the speed of the chirp is equal to the speed of sound in air:
Therefore the wavelength of the chirp is
which corresponds to a size of 4.76 mm.
Their chirp has a frequency of
and the speed of the chirp is equal to the speed of sound in air:
Therefore the wavelength of the chirp is
which corresponds to a size of 4.76 mm.
Let's call h the initial height of the rock (h=50 m, the height of the bridge).
Initially, the rock has only gravitational potential energy, which is given by
where m=10 kg is the mass of the rock while g is the gravitational acceleration. So, the total mechanical energy of the rock at this point is
At midway point of its fall, its height is
, so its potential energy is
But now the rock is also moving by speed v, so it also has kinetic energy:
So the total energy at the midway point of the fall is
(1)
The mechanical energy must be conserved, so
, so we can rewrite (1) and solve it to find the kinetic energy of the rock at midway point of its fall:
Initially, the rock has only gravitational potential energy, which is given by
where m=10 kg is the mass of the rock while g is the gravitational acceleration. So, the total mechanical energy of the rock at this point is
At midway point of its fall, its height is
But now the rock is also moving by speed v, so it also has kinetic energy:
So the total energy at the midway point of the fall is
The mechanical energy must be conserved, so