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How do I solve this question: Calculate and compare the chemical energy of coal to its gravitational potential energy. Burning 1 kg of coal releases about 3 million joules of energy. If you could use all of the chemical energy to life another kg of coal, how high could you lift it?
To compare the chemical energy of coal to its gravitational potential energy we nee to calculate the height to which 1 kg of coal can be lifted using the chemical energy released by burning 1 kg coal
Given Data:
The Chemical energy released by burning 1 kg of coal
E = 3 x 10^6 Joules
The mass of coal that is being lifted
m = 1 kg
acceleration due to gravity,
g = 9.81 m/s^2
The formula for gravitational potential energy (GPE)
GPE = mgh
Let's solve for h
h = GPE/mg
h = 3 x 10 ^6 /1 x 9.81
h = 3035812.69 meters
So, using all the chemical energy released by burning 1 kg of coal, we could lift another 1 kg of coal to a height of approximately 305,813 meters.
This comparison demonstrates the huge amount of energy that coal contains since it can raise its own weight to a height that is much higher than the Earth's atmosphere.
How would I calculate the velocity of a book when it hits the floor using:
a) F = ma and the force of gravity.
Why do you use the force of gravity?
b) gravitational potential energy and kinetic energy
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Solve ||x+3|-4| by piece wise
To solve the expression piecewise, we need to consider the cases when is positive and when it is non-positive.
When : In this case, . Therefore, .
When : In this case, . Therefore, .
So, the piecewise definition for is:
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what is odd number????
An odd number is an integer that is not divisible evenly by 2, meaning that when you divide an odd number by 2, there is a remainder of 1.