Answer:
35000 KJ
Explanation:
The equation for the kinetic energy is given by the formula :
OR
Units will be kilojoules since the units of mass was kilograms .
Our final answer is 35000 KJ
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The four qualifications for the presidency are outlined in the __________. A. US Constitution B. Presidential Charter C. Declara
2 answers:
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Answer:
The tension on the string is
Explanation:
From the question we are told that
The mass of the rock is
The density of the rock is
Generally the volume of the rock is mathematically evaluated as
substituting values
The volume of the rock immersed in water is
substituting values
mass of water been displaced by the this volume is
According to Archimedes principle
=>
The weight of the water displace is
The actual weight of the rock is
The tension on the string is
substituting values
Answer:
v = 5.34[m/s]
Explanation:
In order to solve this problem, we must use the theorem of work and energy conservation. This theorem tells us that the sum of the mechanical energy in the initial state plus the work on or performed by a body must be equal to the mechanical energy in the final state.
Mechanical energy is defined as the sum of energies, kinetic, potential, and elastic.
E₁ = mechanical energy at initial state [J]
In the initial state, we only have kinetic energy, potential energy is not had since the reference point is taken below 1.5[m], and the reference point is taken as potential energy equal to zero.
In the final state, you have kinetic energy and potential since the car has climbed 1.5[m] of the hill. Elastic energy is not available since there are no springs.
E₂ = mechanical energy at final state [J]
Now we can use the first statement to get the first equation:
where:
W₁₋₂ = work from the state 1 to 2.
where:
h = elevation = 1.5 [m]
g = gravity acceleration = 9.81 [m/s²]