I think you forgot to give the choices along with the question. I am answering the question based on my knowledge and research. You would increase mechanical advantage by <span>making the blade longer from the cutting edge. I hope that this is the answer that has actually come to your desired help.</span>
Answer: The Materials of separating salt sand and iron fillings is measurement
Explanation: The explanation to the answer is very easy in basic physics
A system is contained by its boundary; therefore, the size of a system is limited by its boundary.
The force on the layer will be equivalent to the weight of water on it. This is given by:
F = mg; m is the mass of water and g is the acceleration due to gravity.
Answer:
The mass of coal is 108 kg.
Explanation:
Given that,
Energy of coal = 1200 kg
Mass of aluminum = 1.0 kg
Energy required for single soda can = 15 g of Al
Energy required for 6 pack of cans = 
We need to calculate the mass of coal
Using formula of mass
Put the value into the formula
Put the value into the formula
Hence, The mass of coal is 108 kg.
