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Nana76 [90]
3 years ago
7

PLEASE EXPLAIN AND YOU WILL GET BRAINLIST Ms. R is curious if the type of gasoline she uses in her car affects how many miles sh

e can drive on a single tank of gas. (Fuel efficiency). Which of the following would be the BEST scientific question for her to test?
1) How does driving farther affect the type of gas used?

2) How does a Mazda compare to a Civic?


3) How does changing the type of fuel affect the number of miles a car can be driven on a single tank of gas?


4)How does the color of the car affect its internal temperature?
Physics
1 answer:
inessss [21]3 years ago
8 0
Option 3 is the most reasonable

I hope this helped <3

Please give brainliest :)
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A stretched string has a mass per unit length of 5.40 g/cm and a tension of 17.5 N. A sinusoidal wave on this string has an ampl
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Answer:

Part a)

y_m = 0.157 mm

part b)

k = 101.8 rad/m

Part c)

\omega = 579.3 rad/s

Part d)

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As we know that the speed of wave in string is given by

v = \sqrt{\frac{T}{m/L}}

so we have

T = 17.5 N

m/L = 5.4 g/cm = 0.54 kg/m

now we have

v = \sqrt{\frac{17.5}{0.54}}

v = 5.69 m/s

now we have

Part a)

y_m = amplitude of wave

y_m = 0.157 mm

part b)

k = \frac{\omega}{v}

here we know that

\omega = 2\pi f

\omega = 2\pi(92.2) = 579.3 rad/s

so we  have

k = \frac{579.3}{5.69}

k = 101.8 rad/m

Part c)

\omega = 579.3 rad/s

Part d)

here since wave is moving in negative direction so the sign of \omega must be positive

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