As a substance melts, heat energy is used to break the connections between molecules, and temperature __________ until all melti
1 answer:
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Answer:
We know that the acceleration of the particle is defined as
Since it is given that
Now by definition of velocity we have
Integrating on both sides we get
Applying values we get
To find the constant we note that at t=1 the particle is at x=12 Thus applying values in the above equation we get
Answer:
The power is
Explanation:
From the question we are told that
The energy is
The time taken is
Generally the the average power is mathematically represented as
=>
=>
Answer:
B) more dense; change to a liquid or solid
Explanation:
When the pressure of a gas is increased, the average distance between the molecules decreases. In fact, if we assume that the temperature of the gas is kept constant, then we have
which means that the product between pressure and volume is constant: so, if the pressure increases, the volume decreases, and therefore the density of the gas increases (because density is inversely proportional to the volume, )
Moreover, at very high pressure, the gas can turns into a liquid and eventually into a solid: in fact, as the average distance between the molecules decreases more and more, at some point they becomes so close to each other that the intermolecular forces start to be relevant, turning the gas into a liquid.