Answer:
<em>The increase of kinetic energy is 108,000 J</em>
Explanation:
<u>Kinetic Energy
</u>
Is the energy an object has due to its state of motion. It's proportional to the square of the speed and the mass.
The equation for the kinetic energy is:
Where:
m = mass of the object
v = speed at which the object moves
The kinetic energy is expressed in Joules (J)
A car has a total mass of m=1,200 kg and travels at v1=12 m/s. Then it increases its speed at v2=18 m/s.
It's required to compute the increase of kinetic energy. We'll calculate both energies K1 and K2 and then subtract them.
The increase of kinetic energy is:
The increase of kinetic energy is 108,000 J
Answer:
Food, wind, water.
Explanation:
This is supposed to be a personalized question so I answered with things that can make/give energy.
Answer:
The most important is that the thermal conductivity of the armadillas several orders of magnitude lower than the thermal conductivity of the metal, therefore it is easier to maintain the temperature in winter
Explanation:
Cement and bricks are used in the construction of houses instead of metal, for several reasons
* The most important is that the thermal conductivity of the armadillas several orders of magnitude lower than the thermal conductivity of the metal, therefore it is easier to maintain the temperature in winter
* Metal has more oxidation problems than brick
* The cost of sheet metal is higher than the cost of cement brick.
If we will connect the resistors 2ohms, 3ohms, 5ohms in series and the 10ohms resistance parallel then we get equivalent resistance of 5 ohms.
The equivalent circuit is,
R equivalent for the series connection is,
The equivalent resistance is 5 ohms.
So your friend is saying true.
-- While gaining 2.15 m/s more speed every second, the van
would gain (2.15 x 7) = 15.05 m/s more speed in 7 seconds.
-- We're told that its speed at the end of the 7 seconds
is 20 m/s .
-- So its speed at the beginning of the 7 seconds must have been
(20 m/s - 15.05 m/s) = 4.95 m/s .