Answer:
This could represent something like sliding a small rock across an icy lake.
Explanation:
A 20N force of gravity (weight), and 20N normal force exerted back onto the object imply it is on the ground and has no vertical motion. There is a net force of 0N
An 80N force to the left and a 5N force to the right create a net force of 75N to the left. This means that there is a force acting on the object that makes it accelerate to the left. 80N represents a push or pull force and 5N represents a relatively small frictional force due to the object being slid on a surface such as steel or in this case ice.
You have to change the properties of the medium that the sound waves traveling through
Answer:
Explanation:
Given that
We know that
By using energy conservation
Heat lost by water = Heat gain by block
Therefore the specific heat of the block will be 0.501 kJ/kg.K
A scientific theory is something that can not be proven through experimentation, hope this helps