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erma4kov [3.2K]

3 years ago

11

A driver must always stop within 50 ft but not less than ____________ ft from the nearest rail when the signal is flashing and t

he crossing gates are lowered.

2 answers:

k0ka [10]3 years ago

5 0

Answer:

20 ft

Explanation:

docker41 [41]3 years ago

4 0

Answer:

15ft

Explanation:

As stated by the motor laws a driver must stop within 50ft and not less than 15ft from the railroad.

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Answer:

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Explanation:

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Reducing, reusing, and recycling in your office is likely to _______.

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Conserve natural resources, energy and landfill space.

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What is the intensity of a sound with a sound intensity level (SIL) 67 dB, in units of W/m^2?

vfiekz [6]

Answer:

The intensity of sound (I) = 3.16 x 10⁻⁶ W/m²

Explanation:

We have expression for sound intensity level (SIL),

$L=10log_{10}\left ( \frac{I}{I_0}\right )$

Here we need to find the intensity of sound (I).

$L=10log_{10}\left ( \frac{I}{I_0}\right )\\\\log_{10}\left ( \frac{I}{I_0}\right )=0.1L\\\\\frac{I}{I_0}=10^{0.1L}\\\\I=I_010^{0.1L}$

Substituting

L = 67 dB and I₀ = 10⁻¹² W/m² in the equation

$I=I_010^{0.1L}=10^{-12}\times 10^{0.1\times 65}\\\\I_0=10^{-12}\times 10^{6.5}=10^{-5.5}=3.16\times 10^{-6}W/m^2$

The intensity of sound (I) = 3.16 x 10⁻⁶ W/m²

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Physics question help

S_A_V [24]

Answer:

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Explanation:

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Earthquakes that originate beneath the ocean floor produce huge tidal waves called _____.

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Answer;

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3 years ago

Read 2 more answers