Answer:
B.Law of conservation of energy
Explanation:
In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. This law means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.
plz mark me as brainliest :)
What is that supposed to mean?
Answer:
Diffusion
Explanation:
Diffusion is the tendency of molecules to rise from region of higher concentration to region lower concentration until they are even distributed. The tendency of molecules to move toward areas of lower concentration is called diffusion. Diffusion occurs base on diffusion gradient which is change in quantity of the the molecule with respect to change in variables of the medium. The rate of diffusion varies for different substances and mediums.
Let's take the actual question section all by itself:
If an object displaces 40 grams of water, then the buoyant force on the object is equal to the weight of 40 grams of water (Archimedes' principle)... which is equal to the weight of 40 grams of ANY substance.
Weight = (mass) x (gravity)
Weight = (0.040 kg) x (9.8 m/s²)
<em>Weight = 0.392 Newton</em>
so that's the buoyant force acting on the object.
Now, to deal with the first phrase of the question ... everything before the first comma ... you said "100 grams is equal to 1 newton of force". This phrase is really quite meaningless, and there's nothing to be done with it.
A quantity of mass is never "equal to" a force.
Fortunately, whatever this is supposed to mean, it's not needed to answer the rest of the question.
To solve this problem we will apply the linear motion kinematic equations, and force related equations in Newton's second Law.
Our values are given by:
Through equilibrium we know that the Force coming from the vertical weight component minus the Force exerted on the body must be equal to the total Force (Mass and acceleration). So,
Applying the kinematic equations of motion in which the velocity is described by the change in acceleration and position we have
Therefore the Speed at the bottom is 3.44m/s
