Answer:
During the voyage Charles Darwin explored the Galapagos islands and noticed the same species have different adaptations in places. ... Charles noticed that each species has the same ancestor but they evolve to adapt over time so they can live longer.
Explanation:
It travels fastest through solids.
Answer:
Body temperature must be controlled within a very narrow range so that the body can function properly. In particular, enzymes in a body's cells must have the correct temperature to be able to catalyse chemical reactions. high temperatures can cause dehydration, heat stroke and death if untreated.
Since no external torques are acting on the skater, his angular momentum must be conserved in the two different situations (arms and legs in - arms out and one leg out). The angular momentum is given by
where I is the moment of inertia and
the angular speed.
Labeling with "1" the situation where the skater has arms and legs in, and with "2" the situation where the skater has arms out and one leg out, the conservation of the angular momentum becomes
or
We know the moment of inertia and the angular speed of the skater when he has arms and legs in:
and also the moment of inertia of the skater when he has arms and one leg out:
so we can find his angular speed when he opens the arms and one leg:
The problem corresponds to the motion of a projectile (the salmon), with initial speed , initial direction and vertical acceleration downward. The two equations which gives the horizontal and vertical position of the salmon at time t are
(1)
(2)
We can solve the problem by requiring Sx=3.16 m and Sy=0.379 m, the data of the problem.
Solving eq.(1) for t:
And substituting this expression of t into eq.(2), we get the following expression for :
And substituting the numbers into the equation, we find