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3 years ago

Which best explains why making a pancake from batter is an example of a chemical change?

Physics

2 answers:

kenny6666 [7]3 years ago

8 0

Answer:

A. the pancake that forms is a different state of matter.

Explanation:

because the pancake mix is liquid ,and when you cook it you for a solid.

DanielleElmas [232]3 years ago

7 0

Answer:

The answer is C. A new substance forms when the batter is cooked.

Explanation:

I had taken the test and got it right.

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A column of soldiers, marching at 121 steps per minute, keep in step with the beat of a drummer at the head of the column. It is

Novay_Z [31]

There’s a first “clump”/drum beat every half second. That clump will travel about 170m in half a second. Someone 170m away would do their “clump” as the second “clump” was taking place. I think. <span> </span>

7 0

3 years ago

g power output of 87 W. At what distance will the decibel reading be 120 dB, which is noise level of a loud indoor rock concert

Kazeer [188]

Given that,

Output power = 87 W

Decibel reading = 120 dB

We need to calculate the intensity of sound

Using formula of intensity of sound

$dB=10\log(\dfrac{I}{I_{0}})$

Put the value into the formula

$120=10\log(\dfrac{I}{1\times10^{-12}})$

$12=log(\dfrac{I}{1\times10^{-12}})$

$10^{12}=\dfrac{I}{1\times10^{-12}}$

$I=10^{12}\times1\times10^{-12}$

$I=1\ W/m^2$

We need to calculate the distance

Using relation of power out[ut and intensity

$I=\dfrac{P}{4\pi r^2}$

Put the value into the formula

$1=\dfrac{87}{4\pi r^2}$

$r=\sqrt{\dfrac{87}{4\pi}}$

$r=2.63\ m$

Hence, The distance is 2.63 m

7 0

3 years ago

The potential energy of a 25 kg bicycle resting at the top of a 3 m high hill is _______ J

frozen [14]

The potential energy:
E p = m · g · h
m = 25 kg, g = 9.81 m/s², h = 3 m
E p = 25 kg · 9.81 m/s² · 3 m = 735.75 J

5 0

3 years ago

Read 2 more answers

What is the resultant force acting on an object with an eastward force of

kotykmax [81]

Explanation:

15N in the north direction

3 0

3 years ago

Intensity of an earthquake is gennerally hingher near the

ki77a [65]

Answer:

near the epicenter.

Explanation:

Earthquake intensity is a ranking based on the observed effects of an earthquake in each particular place. Therefore, each earthquake produces a range of intensity values, ranging from highest in the epicenter area to zero at a distance from the epicenter.

6 0

3 years ago