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What two base quantities are used to measure speed?
Distance and time. Speed is defined as the distance an object travels per unit of time, so these two base quantities are essential for measuring speed.
How can the technique of this experiment be used to determine whether any two different colors of light such as red light and blue light travel at the same speed inside the plastic?
To determine if red and blue light travel at the same speed in plastic, one could shine both colors of light through the plastic at the same angle and measure the time it takes for each color to travel a set distance. If the times are equal, the speeds are the same. However, if there are differences in the times taken, it suggests that red and blue light have different speeds within the plastic.
Is there proof that the speed of light is not the speed limit?
The speed of light is only the speed limit for information. There are many experiments showing that we can made "non-information" travel faster than the speed of light. For example, in quantum mechanics the phase velocity is faster than the speed of light but the group velocity is slower (or equal to) the speed of light. Also, if two light waves are traveling at the speed of light and they interact, e.g. they constructively interfere with each other, the interference can travel faster than the speed of light. Once again, the speed limit of light is only on information. The word "information" is sometimes tricky to define though.
If two objects moved towards each other with half the speed of light then are they moving at the speed of light relatively?
due to relativistic effects such as time dilation, an observer in either object (an observer in the same inertial frame of reference) will see the other object moving at the speed of lightsee http://math.ucr.edu/home/baez/physics/Relativity/SR/velocity.html for the mathematics behind it
What happens if light moves from a material in which its speed is lower to one in which its speed is higher the ray is bent away from the?
If light moves from a material with a lower speed to one with a higher speed, it undergoes refraction. This causes the light ray to bend away from the normal line, which is an imaginary line perpendicular to the surface of the material at the point where the light enters or exits. The angle of refraction is dependent on the difference in speed between the two materials.
What are the two quantities needed to measure speed?
To measure speed, you need two quantities: distance traveled and time taken. By dividing the distance by the time, you can calculate the speed of an object.
What two quantities must be known in order to determine the distance to an object?
To determine the distance to an object, you need to know the object's speed and the time it takes for the object to travel to a specific location. By multiplying the speed by the time, you can calculate the distance the object has traveled.
Why does refractive index not have units?
Refractive index is a dimensionless quantity because it is the ratio of the speed of light in a vacuum to the speed of light in a medium. Since it is a ratio of two similar quantities, it does not have any units.
What two base quantities are used to measure speed?
Distance and time. Speed is defined as the distance an object travels per unit of time, so these two base quantities are essential for measuring speed.
Why are area and speed derived quantities?
Area and speed are derived quantities because they are obtained by combining base quantities. Area is derived from multiplying two length measurements, while speed is derived from dividing a length measurement by a time measurement. These derived quantities are built upon the fundamental base quantities of length and time.
What two quantities are neccesarz to determine a vector quantities?
It is necessary to know the magnitude and the direction of the vector.
What are the to quantities needed in describing the speed of an moving object?
The two quantities needed to describe the speed of a moving object are distance traveled and time taken to cover that distance. Speed is calculated by dividing the distance by the time.
What two quantities do you need to measure in order to determine density of an object?
mass and volume
What is the ratio of the length of a square?
To determine a ratio, you need two quantities, not just one.
What two quantities do you need to measure in order to determine the density of the object?
mass and volume
What are derived quantities?
All other quantities which described in terms of base quantities are called base quantities.
Which two physical quantities must be measured in order to determine the density of a liquid?
To determine the density of a liquid, two physical quantities that must be measured are the mass of the liquid and the volume of the liquid. Density is calculated by dividing the mass of the liquid by its volume.
