Can you please tell what "it" is?
Answer:
35.625° C
Explanation:
See attachment
a) Final temperature is 35.625° C
b) 0°
<h2>
The speed of the rock just before it reaches the water 25.0 m below the point where the rock left your hand is 45.06 m/s</h2>
Explanation:
First let us find the initial velocity,
We have after 8 seconds the displacement is zero,
We have equation of motion s = ut + 0.5 at²
Initial velocity, u = ?
Acceleration, a = -9.81 m/s²
Time, t = 8 s
Displacement,s = 0 m
Substituting
s = ut + 0.5 at²
0 = u x 8 + 0.5 x -9.81 x 8²
u = 39.24 m/s
Initial velocity is 39.24 m/s.
Now this case is similar to case where a rock is thrown at 39.24 m/s downward.
We have equation of motion v² = u² + 2as
Initial velocity, u = 39.24 m/s
Acceleration, a = 9.81 m/s²
Final velocity, v = ?
Displacement, s = 25 m
Substituting
v² = u² + 2as
v² = 39.24² + 2 x 9.81 x 25
v = 45.06 m/s
The speed of the rock just before it reaches the water 25.0 m below the point where the rock left your hand is 45.06 m/s
C. Solution
<span>
More specifically in the macromolecules of the cells.
These macromolecules could either be amino acids, proteins or nucleic acids. They
are responsible for the chemical changes and reactions that affects largely the
cell and its composition. Take for instance the cytoplasm of the cell where
these organelles are settled. These simple organelles are composed of
macromolecules which ignites and catalyses different functions that enables
cells, in macro-perspective in motion and metabolism. In intestines for
example, metabolism happens and breaking down parts of a food to simpler
compounds that are used and these nutrients delivered throughout the body and
again broken down by into smaller components.</span>
Answer:
time =20s
Explanation:
Average speed = Distance/time
time = Distance / Average speed
Where Distance = 100meters and speed =5m/s
So,
time = 100m/5m/s
time =20s