Contrasting Kinetic and Thermal Energy

2 answers:

7 0

The difference between Kinetic and Thermal Energy is simple. Thermal Energy comes from heat which is generated by molecules moving around very fast (kinetic energy does tie in here but Thermal and Kinetic Energy are still not the same). Kinetic Energy is generated by speed and mass, and whenever an object is moving fast it has Kinetic Energy, if something is sitting still it has Potential Kinetic Energy.

Hope this helps and have a nice day.

-R3TR0 Z3R0

Alex17521 [72]3 years ago

5 0

Answer:

Thermal energy comes from a substance whose molecules and atoms are vibrating faster due to a rise in temperature. Kinetic energy is the energy of a moving object. As thermal energy comes from moving particles, it is a form of kinetic energy.

Step-by-step explanation:

Differences:

So, the main difference between thermal and kinetic energy is that the first one is random motions of particles that you mostly can't see by eye, while the second is a unified motion of these same particles, which you can then see. As you say, kinetic energy of large objects can be converted into this thermal energy.

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Last year , there were 30 male members and 20 female members in a Chess Club . This year , the number of male members is decreas

LekaFEV [45]

The r% of a quantity x is computed by dividing x in 100 parts, and considering r of such parts. So, the r% of the male is

$30\times\cfrac{r}{100} = 0.3 r$

and similarly, the r% of female is

$20\times\cfrac{r}{100} = 0.2 r$

The number of males decreased by this quantity, so now it is

$30 - 0.3r$

and the number of female increased by this quantity, so now it is

$20+0.2r$

we know that these two new counts are the same number, so we can build and solve the equality

$30 - 0.3r = 20+0.2r$

Subtract 20 and add 0.3r from both sides:

$10 = 0.5r$

Divide both sides by 0.5 to solve for r:

$r = 20$

Let's check the answer

The 20% of 30 is $30 \times \frac{20}{100} = 6$ , while the 20% of 20 is 4. So, we are stating that $30-6 = 20+4$ which is true because both expressions evaluate to 24.