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saw5 [17]
3 years ago
5

A cube of sugar is broken in half. Is that a Chemical or Physical Change?

Physics
1 answer:
alexira [117]3 years ago
3 0

It is a Physical Change, the chemical composition of the sugar is not being changed.

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When two notes are played simultaneously, creating a discordant sound, it is called _____.
mart [117]

Answer:

The correct answer is option D.

Explanation:

Acoustic : A branch of physics which study the properties of sound.

Consonance: Combination of notes occurring simultaneously due to relationship between their respective frequencies.

Timbre: A characteristic of a musical note which makes it distinct from another wave which also have same pitch and intensity.

Dissonance :When combination of two notes are played simultaneously with lack of harmony in between them.

Hence, the correct answer is option D.

5 0
3 years ago
Will give thanks!!! 38 pts
Sergeeva-Olga [200]
We all know the temperature gets higher as particles bounce off each other, but to slow it they have to be more spread out and moving in a slower motion which the enzymes help this process.  
6 0
4 years ago
11). Determine the acceleration due to gravity if a 6kg book was on top of
DerKrebs [107]

Answer:

g = 9.8 [m/s²]

Explanation:

To solve this problem we must remember that the potential energy is defined as the product of mass by gravitational acceleration by the height or elevation with respect to a reference level.

Ep = m*g*h

where:

Ep = potential energy = 235.2 [J]

m = mass of the book = 6 [kg]

g = gravity acceleration [m/s²]

h = elevation = 4 [m]

Now replacing these values:

235.2 = 6*g*4

g = 235.2/(24)

g = 9.8 [m/s²]

6 0
3 years ago
Suppose the B string on a guitar is 24" long and vibrates with a frequency of about 247 Hz. You place your finger on the 5th fre
pashok25 [27]

To solve this problem it is necessary to apply the related concepts to string vibration. This concept shows the fundamental frequency of a string due to speed and length, that is,

f = \frac{v}{2L}

Where

v = Velocity

L = Length

Directly if the speed is maintained the frequency is inversely proportional to the Length:

f \propto \frac{1}{L}

Therefore the relationship between two frequencies can be described as

\frac{f_2}{f_1}=\frac{l_1}{l_2}

f_2 = \frac{l_1}{l_2}(f_1)

Our values are given as,

l_1 = 24"\\f_1 = 247Hz\\l_2 = 18"

Therefore the second frequency is

f_2 = \frac{l_1}{l_2}(f_1)\\f_2 = \frac{24}{18}(247)\\f_2 = 329.33Hz

The frequency allocation of 329Hz is note E.

8 0
3 years ago
Mary starts from her house, walks 80 meters south, and stops to chat with her aunt on the sidewalk. After chatting for a few min
maksim [4K]

Answer:

0.42 meters/second

Explanation:

The total distance traveled by Mary is: 80 m + 125 m + 45 m = 250 m  

We want the speed in meters/second, so we have to convert the 10 minutes elapsed during the trip into seconds. Then we need a conversion factor, 1 minute is equivalent to 60 seconds.

time = 10 minutes * (60 seconds/1 minute) = 600 seconds (notice that minute is cancelled because is multiplying and dividing)

Now, we can compute the average speed is as follows:

Average speed = total distance/time = 250 m/600 s =  0.42 m/s

6 0
4 years ago
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