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Dominik [7]
3 years ago
7

What do you do if you approach a railroad crossing with a crossbuck sign that has no lights or gates

Physics
1 answer:
miv72 [106K]3 years ago
3 0
Proceed with caution before crossing
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A. through a relatively short distance.

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Chicago Bears rookie running back Tarik Cohen stands 5 feet and 6 inches tall, which is 66 total inches. How many meters tall is
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The direction of an electric field is the direction (5 points)
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In a chemical equation, where do the reactants appear?
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Answer: A chemical equation describes a chemical reaction. Reactants are starting materials and are written on the left-hand side of the equation. Products are the end-result of the reaction and are written on the right-hand side of the equation.

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8 0
3 years ago
A viola string with a fundamental frequency of D4 (293 Hz) is generally tuned using a tension of 49.0 N. However, just before a
Alborosie

Answer:

Explanation:

For fundamental frequency in a vibrating string , the formula is

n = 1 / 2L  x  √ ( T /m₁ )

n is frequency , L is length , T is tension and m₁ is mass per unit length .

For first string ,

293 =  1 / 2L  x  √ ( 49 N  /m₁ )

For second string , let mass per unit length be m₂ .

196 =  1 / 2L  x  √ ( 49 N  /m₂ ) ------ ( 1 )

To bring its frequency back to previous one let tension be T

293  =  1 / 2L  x  √ ( T  /m₂ ) ------- ( 2 )

Dividing

293 / 196 = √ ( T  /49  )

1.4948 = √ ( T  /49  )

2.2344 = T  /49

T = 109.48 N .

8 0
2 years ago
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