At what speed v will the length of a 1.00 m stick look 13.7 % shorter (86.3 cm )Using formula L=Lp sqrt 1-v^2/c^2
Answers
⇒L/Lp = 0.8613
From the formula above L/Lp = √(1-v^2/c^2)
(L/Lp)^2 = 1 - (v^2/c^2)
v^2/c^2 = 1 - (L/Lp)^2
v/c = √[1 - (L/Lp)^2]
v = c √[1-(L/Lp)^2]
v =c√[1-0.8613^2] = 0.508c
In the vacumm speed of light, c, is approx 300,000,000 m/s
v =0.508 (300,000,000m/s) =152,400,000 m/s
Please, let me know if this helped you.
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Answer:
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The second filter then reduces the intensity by a factor cos²(θ)
Explanation:
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Answers
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Answers
Wave A will be faster than the wave B because
What is the frequency of the wave?
The frequency of the wave is defined as the cycle completed by the wave per second.
Now it is given in the question:
Frequency of wave A = 250 hertz
The wavelength of wave A= 30 cm
Frequency of wave B = 260 hertz
The wavelength of wave B= 25 cm
Now for finding which wave is faster we will calculate the velocity of the wave.
For Wave A
For wave B
We can see that the velocity of wave A is higher than the velocity of wave B.
Thus wave A will be faster than the wave B because
To know more about the frequency of waves follow
Wave A
250×30×10^-2=75 m/s
Wave B
260×25×10^-2=65 m/s
Therefore
Wave A is faster
b. Liquid
c. Gas
Answers
b. Electromagnet
c. Piece of glass
d. A copper wire
Answers
Answer:
B, and electromagnet
Explanation: