A worker is holding a filled gas cylinder still. Which two sentences are true about the energy of the filled gas cylinder?
2 answers:
Answer:
B .It has gravitational potential energy because of its height.
C .Its atoms and molecules have thermal energy.
Explanation:
B. The cylinder has gravitational potential energy; in fact, this is given by
where m is the mass of the cylinder, g is the gravitational acceleration and h is the heigth of the cylinder above the ground. Since the height h is different from zero, it means that the GPE is different from zero.
C. The gas inside the cylinder has thermal energy, because its atoms and molecules constantly move (they have a random motion called Brownian motion), and this kind of energy due to the motion of molecules is called thermal energy.
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Answer:
The gain in velocity is 0.37m/s
Explanation:
We need solve this problem though the conservation of momentum. That is,
Using the equation to find ,
Using the conservation of energy equation, we have,
Now this energy over the cannonball
The gain in velocity is 0.37m/s
Answer:
The kinetic energy of the particle will be 12U₀
Explanation:
Given that,
A particle is launched from point B with an initial velocity and reaches point A having gained U₀ joules of kinetic energy.
Constant force = 12F
According to question,
The kinetic energy is
....(I)
Constant force = 12F
A resistive force field is now set up ,
Resistive force is given by,
When the particle moves from point B to point A then,
We need to calculate the kinetic energy
Using formula for kinetic energy
Put the value of
Now, from equation (I)
Hence, The kinetic energy of the particle will be 12U₀.
