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blagie [28]
3 years ago
7

Which statement is true because of Newton's second law?

Physics
2 answers:
Lady_Fox [76]3 years ago
8 0

Answer:

B. Hope this helped!

Have a great day!

expeople1 [14]3 years ago
6 0
Newton's second law of motion says

                     Force = (mass) x (acceleration) .

<span>B. When the net force ACTING ON an object decreases,
the object's acceleration decreases.</span>

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Visualizing the body in the position is significant because all observers have a common point of reference when describing and d
FromTheMoon [43]

Visualizing the body in the anatomical position is significant because all observers have a common point of reference when describing and discussing its region.

<h3>What is the anatomical position?</h3>
  • Anatomical position, also known as conventional anatomical position, refers to the body's position while it is standing erect and looking forward, with each arm hanging on either side of the body and palms facing forward.
  • The legs are parallel, with the feet level on the floor and forward facing.
  • When explaining particular anatomical words and locations in human anatomy and physiology, the anatomical position is a standard point of reference.
  • Visualizing the body in its anatomical location is important because it provides a single point of reference for all observers when describing and discussing its region.

As the description itself says, visualizing the body in its anatomical location is important because it provides a single point of reference for all observers when describing and discussing its region.

Therefore, visualizing the body in the anatomical position is significant because all observers have a common point of reference when describing and discussing its region.

Know more about the anatomical position here:

brainly.com/question/5029605

#SPJ4

The question you are looking for is given here:

Visualizing the body in the _____________ is significant because all observers have a common point of reference when describing and discussing its region.

6 0
2 years ago
A distant galaxy emits light that has a wavelength of 434.1 nm. On earth, the wavelength of this light is measured to be 438.6 n
maksim [4K]

Answer:

A) receding from the earth

B) 3.078x10^6m/s

Explanation:

  • A) receding from the earth

The wavelength went from 434.1nm to 438.6nm, there was an increase in wavelength (also knowecn as redshift due to the doppler efft), this increase is due to the fact that the source that emits the radiation (the distant galaxy) is moving away and therefore the light waves it emits are "stretched", causing us to see a wavelength greater than the original.

  • B) 3.078x10^6m/s

to calculate the relative speed we use the following formula:

v_{rel}=c(1-\frac{\lambda_{1}}{\lambda_{2}} )

where c is the speed of light: c=3x10^8m/s

\lambda_{1} is the wavelength emited by the source, and

\lambda_{2} is the wavelength measured on earth.

we substitute all the values and do the calculations:

v_{rel}=(3x10^8m/s)(1-\frac{434.1nm}{438.6nm} )\\\\v_{rel}=(3x10^8m/s)(1-0.98974)\\\\v_{rel}=(3x10^8m/s)(0.01026)\\\\v_{rel}=3.078x10^6m/s

the relative speed is: 3.078x10^6m/s

5 0
3 years ago
A certain siren radiates sound uniformly in all directions. At a distance of 17 m from the siren, the intensity level is 49 db.
AveGali [126]

Answer:

The power is  P =  2.88*10^{-4 } \ W

Explanation:

From the question we are told that

   The distance from the siren  is  d =  17 \ m

  The intensity level is  \beta  =  49\ dB

   The threshold of hearing is   I_0 = 1.0 *10^{-12} \ W/m^2

Generally the intensity level is mathematically represented as

      \beta  =  10dB * log [\frac{I}{I_o} ]

Where I is the intensity at which the siren radiates the sound

substituting values  

       49  =  10 * log [\frac{I}{1.0 *10^{-12}} ]

=>    I  =  7.94*10^{-8} W/m^2

Now the amount of power the siren put out is mathematically evaluated as

      P= IA

Where A is the area  of the siren which is taken as a sphere  and it  is mathematically evaluated as

       A =  4 \pi d^2

So  

     P =  I  * 4 \pi d^2

substituting values

    P =  7.94 *10^{-8}  * 4  * 3.142 * (17)^2

   P =  2.88*10^{-4 } \ W

3 0
3 years ago
Someone help me?
kap26 [50]

Answer:

-27.3 m/s

Explanation:

Given:

y₀ = 38 m

y = 0 m

v₀ = 0 m/s

a = -9.8 m/s²

Find: v

v² = v₀² + 2a (y − y₀)

v² = (0 m/s)² + 2 (-9.8 m/s²) (0 m − 38 m)

v = -27.3 m/s

Or, you can solve with energy.

PE = KE

mgh = ½ mv²

v² = 2gh

v = -27.3 m/s

3 0
3 years ago
1.How does inertia affect a person who is not wearing a seatbelt during a collision?
JulsSmile [24]
It keeps them back on the seat so they don't fly out the windshield.
4 0
4 years ago
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