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geniusboy [140]
3 years ago
9

Ezekiel is standing inside a spaceship ( S′ frame) that moves to the right at a speed of v=0.5c , where c is the speed of light.

Flashlights emitting light signals are located at the front and back ends of the spaceship. The signals from the flashlights reach Ezekiel at the same time. Sabrina stands on Earth observing the same flashlights.According to your friend, which signal was emitted first?
a. The signal from the front flashlight b. The signal from the back flashlight c. Both signals are simultaneous d. Cannot be determined
Physics
1 answer:
vova2212 [387]3 years ago
3 0

Answer:

c. Both signals are simultaneous.

Explanation:

The speed of light is the same in all frame of reference.

Since an observer inside the ship receives both signals at the same time, then the signals from both flashlight are simultaneously.

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A certain car traveling at 97 km/h can stop in 47 m on a level road find the coefficient of friction
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The coefficient of friction between the road and the car's tire is determined as 0.78.

<h3>Acceleration of the car</h3>

The acceleration of the car is calculated as follows;

v² = u² - 2as

0 = u² - 2as

a = u²/2s

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1 year ago
do constructive inference occur when the compression of one wave meets up with the compression of a second wave
Ugo [173]

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Yes

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There are two types of interference possible when two waves meet at the same point:

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- Destructive interferece: this occurs when the two waves meet in anti-phase, i.e. the crest (or the compression, in case of a longitudinal wave) meets with the trough (rarefaction) of the other wave. In this case, the amplitude of the resultant wave is zero, since the amplitudes of the two waves cancel out.

In this problem, we have a situation where the compression of one wave meets with the compression of the second wave, so we have constructive interference.

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