Answer:
B. Smaller Particles
Explanation:
We know that the rate of reaction increases with increase in the surface area of reactants.
The reacting particles in the log of wood are embedded inside the wood making only very minimal amount of particles available for reaction. This ultimately slows down the rate of combustion.
However, in saw dust, there is a greater availability of surface area of reactants hence the sawdust burns faster than logs.
<h3>
Answer:</h3>
5 m/s²
<h3>
Explanation:</h3>
From the question, we are given;
- Mass is 3 kg
- Force is 15 N
We are supposed to calculate the acceleration;
- To calculate the acceleration we will use the second Newton's law of motion;
- According to Newton's second law of motion, the resultant force is directly proportional to the product of force and mass.
In this case;
To get acceleration we rearrange the formula;
a = F ÷ m
= 15 N ÷ 3 kg
= 5 m/s²
Therefore, the acceleration of the ball is 5 m/s²
B. trail mix
because you can easily take all the peaces out unlike water you cant physically take the oxygen out
The safest conclusion would be that the marine organisms dominated the living world at that time. It is really hard to say with certainty that there were no land organisms just from the lack of their fossils in that era. The process of forming the fossils is quite fragile and requires various conditions to be fulfilled ( perfect temperature, moisture, the composition of the ground etc.), so a lack of fossils can also be due the bad conditions for fossilization at that time, not the lack of organisms present.
