Answer:
spreading a substance from a region of high concentration to a region of low concentration.
Explanation:
Diffusion is a process of spreading a substance from a region of high concentration to a region of low concentration. It occurs when the particles of the substance move through the space between the particles of another substance.
The shoreline would be your
reference point.
A reference point, in physics, is some point in space used to illustrate the location or position of other things, relative to this reference point. So in this case, the shoreline is considered as the reference point to locate the position of the surfers.
Earlier, we stated Newton's first law as “A body at rest remains at rest or, if in motion, remains in motion at constant velocity unless acted on by a net external force.” It can also be stated as “Every body remains in its state of uniform motion in a straight line unless it is compelled to change that state by forces
For example-A stationary object with no outside force will not move. With no outside forces, a moving object will not stop. An astronaut who has their screwdriver knocked into space will see the screwdriver continue on at the same speed and direction forever.
Answer:
B
Explanation:
Newton’s Second Law of Motion
Newton’s Second Law of Motion states that ‘when an object is acted on by an outside force, the mass of the object equals the strength of the force times the resulting acceleration’.
This can be demonstrated dropping a rock or and tissue at the same time from a ladder. They fall at an equal rate—their acceleration is constant due to the force of gravity acting on them.
The rock's impact will be a much greater force when it hits the ground, because of its greater mass. If you drop the two objects into a dish of water, you can see how different the force of impact for each object was, based on the splash made in the water by each one.
Answer: Option (e) is the correct answer.
Explanation:
There are three types of kinetic energy which are vibrational, rotational and translational kinetic energy.
A plucked string on a guitar will produce sound and it represents vibrational kinetic energy.
The moving blades of a ceiling fan shows the rotation of blades and it represents rotational kinetic energy.
A spinning top also displays rotation therefore, it represents rotational kinetic energy.
A tuning fork struck on a rubber block will produce sound and it will vibrate. Therefore, it represents vibrational kinetic energy.
An apple falling from a tree shows that apple is linearly falls on the ground therefore, it represents translational kinetic energy.
Thus, we can conclude that an apple falling from a tree is the best example which represents translational kinetic energy.
