Answer:
Structural
Explanation:
Structural adaptations are a change to a organism's body, gills are part of the fish's body which would be why this is a structural adaptation!
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Molecules in a gas move faster than in a liquid.
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Answer:
H = 1/2 * g * t^2 since initial velocity is zero
v = g * t where v is the final velocity
t = v / g
H = 1/2 g * v^2 / g^2 = 1/2 v^2 / g
v = (2 * H * g)^1.2
v = (2 * 500 * 9.8)^1/2 = 99 m/s
Check: t = v / g = 99 / 9.8 = 10.1 sec
H = 1/2 * 9.8 * 10.1^2 = 500 m
Answer:
The veolcity of the 7 kilogram body is approximately 0.14 meters per second
Explanation:
Here we have to use the conservation of linear momentum for the bodies asumming the force of the spring an internal force on the system formed by the two blocks. So the change on linear momentum (
) has to be zero.
The final momentum 
is the sum of the final momentum of each block, and initial linear momentum 
is zero because the blocks were initially at rest, so:
It's important to note that the linear momentum is a vector quantity so the direction of the velocities are important, assuming positive the velocity of the 5 kilogram body
The speed is 0.14 meters per second and the negative sign means the direction is opposite of the 5 kg body velocity.
Explanation:
As we all know that the atom mainly composed of two parts, Nucleus at the center and the electrons dancing around it. And, yes there is a vast distance between nucleus and the electrons and it's about ten billionth of a meter. So the question is if there is such an empty space then why not our body just move through the chair and fall? So the answer is, it's all due to the forces. Just like the cracking of lightning through the void, specks of electrons and nuclei are constantly interacting through the force called electromagnetic forces. During each interaction there is an exchange of energy particles called photons. So the each photon swapped is equals to the push or pull or the forces exerted across the emptiness. So these forces enable us to sit on chair or to do other things.
