To solve this problem it is necessary to apply the concepts related to energy conservation.
In this case the kinetic energy is given as
Where,
m = mass
v= Velocity
In the case of heat lost energy (for all 4 wheels) we have to
m = mass
Specific Heat
= Change at temperature
For conservation we have to
Therefore the temperature rises in each of the four brake drums around to 47°C
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The electrostatic force between two point charges is given by:
where
is the Coulomb's constant
q1 and q2 are the two charges
r is the distance between them
In our problem, charge 1 is
while charge 2 is
and their distance is
r=5.0 cm=0.05 m
So, the electrostatic force between them is
And the negative sign means the force is attractive, because the two charges have opposite sign.
Just like the water cycle, rocks undergo changes of form in a rock cycle. A metamorphic rock can become an igneous rock, or a sedimentary rock can become a metamorphic one. Unlike the water cycle, you can’t see the process happening on a day-to-day basis. Rocks change very slowly under normal conditions, but sometimes catastrophic events like a volcanic eruption or a flood can speed up the process. So what are the three types of rocks, and how do they change into each other? Keep reading to find out!
