When you approach a blinking source of light, the frequency of its blinking is seen to: decrease, increase, or remain the same always.
I THINK IT IS INCREASING.
If you are traveling at close to the speed of light and shine a flashlight out in front of you, a third observer at relative rest will see the beam moving: slower than the speed of light, faster than the speed of light or at the speed of light
I THINK IT IS AT THE SPEED OF LIGHT.
Thanks for all the help! This chapter has me confused!
On the first: You still sense time the same. Your clock says it is the same. But in truth, your clock is slowing, however you cant know that until you slow down and compare your watch to a referece.
The second is ok.
You're welcome! I'm happy to help clarify things for you. Let's go through each question and explain how to arrive at the correct answers.
Question 1: When you approach a blinking source of light, the frequency of its blinking is seen to decrease, increase, or remain the same always.
When you approach a blinking source of light, the frequency of its blinking is observed to increase. This phenomenon is known as the Doppler effect.
The Doppler effect is the change in frequency or wavelength of a wave as observed by an observer moving relative to the source of the wave. When you approach the source of a wave, the wave crests (or blinks in this case) are "compressed," which means they appear closer together. This compression of the wave crests leads to an increase in frequency, resulting in a higher perceived rate of blinking. So, the correct answer is "increase."
Question 2: If you are traveling at close to the speed of light and shine a flashlight out in front of you, a third observer at relative rest will see the beam moving slower than the speed of light, faster than the speed of light, or at the speed of light.
The behavior of light and objects traveling at close to the speed of light is governed by the principles of special relativity. According to special relativity, no matter how fast an observer is moving relative to a light source, the speed of light will always be the same.
Therefore, if you are traveling at close to the speed of light and shine a flashlight out in front of you, a third observer at relative rest will see the light beam moving at the speed of light. This is because the speed of light is constant and independent of the motion of the source or the observer. So, the correct answer is "at the speed of light."
I hope these explanations help you understand these concepts better! If you have any more questions, feel free to ask.