While burning coal and charcoal, you notice that coal releases more heat than charcoal. What does that mean? A.The elastic energy is lower in charcoal than in coal.
B.The chemical potential energy is lower in charcoal than in coal.
C.The chemical potential energy is higher in charcoal than in coal.
D.The elastic energy is higher in charcoal than in coal.

The fact that coal releases more heat than charcoal means that the chemical potential energy is lower in charcoal than in coal.

When the substance is burnt in oxygen, the chemical potential energy stored in the substance is converted into heat energy. The substance that has the most chemical potential energy releases the most energy when burnt.

In burning coal and charcoal, you notice that coal releases more heat energy than charcoal. This means that the chemical potential energy is lower in charcoal than in coal.

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Lisa leaves her house and travels her route at a speed of 1.15m / s, at what time

Does it take to get to the bakery if you travel the same distance?

Explanation:

Given parameters:

Speed of Lisa  = 1.15m/s

Unknown:

Time taken  = ?

Solution;

To solve this problem, let us define speed.

Speed is the rate of change of distance with time. It is mathematically expressed as;

         Speed  =

Since the unknown in this problem is time;

                  time  =

Now input the value of the speed;

                  time  = s

Since the value of the distance covered is not given, it is impossible to solve any further