-- more and faster communication
-- more and faster transportation
These two changes give more people more contact with more other people who are
different, which leads to the cross-seepage of cultural characteristics between cultures.
Light waves change speed when they travel from air into the material of the pencil, and then change speed again when they exit the pencil back into the air. This change in speed causes the light waves to refract or bend.
No, refraction occurs because light changes speed when passing from one medium to another. The change in speed causes the light wave to bend, resulting in refraction. If light did not change speed, refraction would not occur.
Changing an object's direction without affecting speed requires a force that acts perpendicular to the object's velocity, such as centripetal force or gravitational force. This force causes the object to change direction while continuing at a constant speed. Other forces acting parallel to the object's velocity can change its speed as well as its direction.
The change in the Doppler effect does not cause a change in the frequency of the wave source itself; it only affects how the frequency of the wave is perceived by an observer in relative motion to the source.
plants need waterpoint made. period.. . . . . . .
A force.
The change in speed of light changes the direction.
The light waves coming from the pencil change speed when they move from air (faster speed) to the glass or water (slower speed). This change in speed causes the light waves to refract or bend.
work
Light waves change speed when they travel from air into the material of the pencil, and then change speed again when they exit the pencil back into the air. This change in speed causes the light waves to refract or bend.
A wave bends when it enters a new medium due to a change in its speed caused by the change in the medium's properties, such as density or elasticity. This change in speed at the boundary between the two mediums causes the wave to change direction, known as refraction.
A wave bends when it crosses from one medium to another due to a change in its speed. This change in speed is a result of the wave experiencing different properties, such as density or elasticity, in each medium. This change in speed causes the wave to refract, or bend, as it enters the new medium.
A forces on an object m creates an acceleration a=f/m and acceleration causes a change in velocity a= dv/dt. This change in velocity can change the speed or direction or both.
A change in speed of the wave due to the change in medium causes the wave to bend and change direction. This change in speed is a result of the wave moving from a medium with one optical density to another with a different optical density, leading to refraction.
When light passes from one medium to another with a different optical density, such as air to glass, it experiences the most bending at the interface due to a change in speed. This change in speed causes the light to refract or bend.
In physics, a force is any influence that causes a free body to undergo a change in speed, a change in direction, or a change in shape.
In physics, a force is any influence that causes a free body to undergo a change in speed, a change in direction, or a change in shape.