Question

An electric bulb, connected to a make and break power supply, switches off and on every second in its rest frame. What is the frequency of its switching off and on as seen from a spaceship travelling at a speed 0.8c?

Answer 1

Answer:

this is not a chemistry question please don't post it here

Answer 2

Explanation:

In the question, it is given:

Spaceship’s speed is denoted as v, which is 0.8 c.

Bulb has the proper frequency denoted by f, which is 1 Hz.

Let us consider that the bulb’s frequency as observed from a spaceship and this is denoted as f‘.

$\mathrm{f}^{\prime}=1-0.64 \mathrm{c} 2 \mathrm{c} 2=0.36=0.6 \mathrm{Hz}$

The frequency is 0.6 Hz as seen from the travelling spaceship at a speed 0.8c.