<h2>The initial velocity is 2.3
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Explanation:
Suppose the speed of car at point A is u .
Its kinetic energy K = mu²
At point B , its kinetic energy = K
and its gravitational potential energy = K = m g h = 2 m g R
here height h = 2 R ( radius of circle )
From the principle of conservation of energy
m u² = m u² + 2 m g R
m u² = 2 m g R
Therefore u = = 2.3
<span>Hey there!
Awesome question=)
Siobhan can place it on a regular scale(0 gravity area), or she can use the "balance scale"
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I hope this helps;)
Shelf, slope, rise, abyssal plain is the correct order of marine provinces from the coast to the mid-ocean ridge. A shelf break marked by where increased slope angle occurs. A continental shelf is a flat zone from shore to shelf break. A continental slope is where deep ocean basins begin. The abyssal plains located in the Deep-ocean basins; extend from the base of continental rise.
Answer:
102900 Joules
Explanation:
Assuming the kinetic energy was zero at the moment of release, you can make the following argument to solve the problem:
The potential energy at full height was mgh. We are told that after 70% of the distance, i.e., mg(0.3h) = 44.1kJ. Since potential energy is linear in altitude h, we get get the full potential energy to be 44.1kJ/0.3. The difference between full potential energy and the one after 70% of the way must equal the gained kinetic energy (neglecting stuff like heat due to friction). So,
44.1kJ/0.3 - 44.1kJ = 0.7*44.1kJ/0.3 = 102.9kJ = Ekinetic
The kinetic energy after 70% of the falling distance was 102.9 kJ.