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AlekseyPX
2 years ago
14

Clarisse had three substances. A white substance was waxy and malleable. A red crystal was translucent, and it cracked when she

hit it with a hammer. A silver substance could be flatten by hitting it with a hammer, but it did not crack. Which two statements could be true?

Physics
2 answers:
melisa1 [442]2 years ago
8 0

Answer:

Explanation: A. The red substance was ionic.

C. The white substance was molecular.

melomori [17]2 years ago
6 0

Answer:

The red substance was ionic. The white substance was molecular.

Explanation:

B.C.

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By what factor does the sound intensity increase if the sound intensity level increases from 60 db to 61 db?
tiny-mole [99]

Answer:

\frac{I_{2}}{I_{1}} = 10^{0.1}

Explanation:

The sound intensity level β can be mathematically defined as

\beta(dB) = 10log_{10}(\frac{I}{I_{o} } )

where I_{o} is the reference intensity and is equal to 10^{-12} W/m^{2}.

Now,

\beta_{2} - \beta_{1} = 10 log\frac{I_{2} }{I_{o}} -  10 log\frac{I_{1} }{I_{o}}\\62-60= 10log(\frac{\frac{I_{2} }{I_{o} } }{\frac{I_{1} }{I_{o} } } )\\1=10log(\frac{I_{2} }{I_{1} } )\\\\\frac{I_{2} }{I_{1} }=10^{0.1}

6 0
3 years ago
You are 2m from one audio speaker and 2.1m from another audio speaker. Both generate the identical sine wave with a frequency of
Bogdan [553]

Answer:

the phase difference is 1.26 radian

Solution:

As per the question:

Distance, d = 2 m

Distance from the other speaker, d' = 2.1 m

Frequency, f = 680 Hz

Speed of sound, v = 340 m/s

Now,

To calculate the phase difference, \Delta \phi:

Path difference, \Delta d = d' - d = 2.1 - 2 = 0.1\ m

For the wavelength:

f\lambda = v

where

c = speed of light in vacuum

\lambda = wavelength

Now,

680\times \lambda = 340

\lambda = 0.5\ m

Now,

Phase difference, \Delta phi = 2\pi \frac{\Delta d}{\lambda}

\Delta phi = 2\pi \frac{0.1}{0.5} = 1.26\ rad

6 0
3 years ago
1. Each of four boys were given
GalinKa [24]

Answer:

the answer is A because

from tate 4 dozen is 48 and from joe the sixth multiple of eight is 48

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2 years ago
How long will it take for a car to travel 200 km if it has an average speed of 55 km/hr? ​
andreyandreev [35.5K]

Answer: Approximately 3.65 hours

Explanation:

55 km/h x 3.65 hrs = 200.75 Km/h

4 0
3 years ago
Which one of the following accurately describes a proper use of eyeglasses?
stiks02 [169]
The statement that accurately describes a proper use of eyeglasses is statement A. Using converging lenses to help a nearsighted person by moving the image from in front of the retina to the retina. 
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3 years ago
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