0 m/s, the ball will stop before transferring to the force of gravity on earth (-9.8 m/s^2) starts acting on it.
Answer:
Hope it helps!
Explanation:
Light behaves both as a particle and as a wave. When UV light hits a metal surface, it causes an emission of electrons. Albert Einstein explained this "photoelectric" effect by proposing that light – thought to only be a wave – is also a stream of particles.
The main point of Einstein's light quantum theory is that light's energy is related to its oscillation frequency. ... The various properties of light, which is a type of electromagnetic wave, are due to the behavior of extremely small particles called photons that are invisible to the naked eye.
Credits:
Light is It a Wave or a Particle? - Canon Global
The first ever photograph of light as both a particle and wave
Answer:
Measurement is a comparison of an unknown quantity with a known fixed quantity of the same kind. The value obtained on measuring a quantity is called its magnitude. The magnitude of a quantity is expressed as numbers in its unit.
Answer: The light is slowed down by the prism, but the different wavelengths of light are all slowed down a different amount by the prism.
Explanation:
What happens here is that white light passes from a medium with an specific index of refraction (air) to another medium with a different index of refraction (the material of which the prism is composed).
Then, when light passes from a medium to another, its speed changes causing the deviation of the beam of light. However, we are talking about white light that is composed of different wavelenghts. So, since the frequency of light remains costant when passing from one medium to another, the different wavelengths change as a result of the change in speed.
This was first observed by Isaac Newton in the eighteenth century, when he found out that when a beam of light from the Sun, passes trhough a prism is decomposed in many different colors.