2 years ago

Which best describes the purpose of a controlled experiment?

1 answer:

3 0

A controlled experiment is best described as a safe, in depth, and insightful display that helps you understand the purpose of the experiment better

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Igoryamba

The answer is a) Teres Major Muscle

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1 year ago

hammer [34]

Velocity is height , speed is an object being propelled by force

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2 years ago

dlinn [17]

Answer:

it can cause wear and tear and reduces efficiency as energy is lost.

Explanation:

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2 years ago

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

8 0

2 years ago

gogolik [260]

Answer: 41.72m/s

Explanation: v= u + gt

V = 2.52 + 9.8(4.00)

V = 41.72m/s

6 0

2 years ago