Answer it in detail (1-2 paragraphs) 1. Define a reference frame and then an ine

Question

Answer it in detail (1-2 paragraphs)

1. Define a reference frame and then an inertial reference frame. Give example of both inertial and non-inertial reference frames.

2. Explain the concept of time dilation. What is the twin paradox?

3. Explain why it is impossible for an object to travel at the speed of light (Hint: evaluate the energy of the object)

4. Discuss the importance of the photoelectric effect in the context of quantum physics.

5. What is the de Broglie wavelength? List at least one experimental evidence the matter exhibits wave characteristics.

6. State Hesisenberg's uncertainty principle.

Explanation / Answer

Reference Frame

In physics, a frame of reference (or reference frame) may refer to a coordinate system used to represent and measure properties of objects, such as their position and orientation, at different moments of time. It may also refer to a set of axes used for such representation. In a weaker sense, a reference frame does not specify coordinates, but only defines the same 3-dimensional spacefor all moments of time such that the frame can distinguish objects at rest from those that are moving.

inertial reference frame

In physics, an inertial frame of reference (also inertial reference frame or inertial frame or Galilean reference frame or inertial space) is a frame of reference that describes time and space homogeneously, isotropically, and in a time-independent manner

Example: constant velocity bus on straight path

Non Intertial frame of reference:

By contrast, in a non-inertial reference frame the laws of physics vary depending on the acceleration of that frame with respect to an inertial frame, and the usual physical forces must be supplemented by fictitious forces

example: a ball dropped towards the ground does not go exactly straight down because the Earth is rotating. Someone rotating with the Earth must account for the Coriolis effect

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