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S_A_V [24]
3 years ago
5

Please help hurry. It’s time.

Physics
2 answers:
Ghella [55]3 years ago
8 0

Answer: a

Explanation: Hope it helps

Mkey [24]3 years ago
3 0

Answer:

A

Explanation:

I think its a because A would be heavier making it go down faster than B. its like when you drop a father compared to a ball, the feather is lighter so it will go down slower than the ball because it has more mass

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by scale drawing, find the resultant of vectors 70N inclined at100N and direction of the resultant 100N​
Thepotemich [5.8K]

Answer: 70n=

<h3>at100n=</h3>

100n=

Explanation:

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3 years ago
Why do action and reaction forces not cancel each other out (and result in a net force of zero)?
maksim [4K]
Because they act independently
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A left front tire blows out. unless you control the vehicle, what will probably happen?
poizon [28]
You will vere to the left
4 0
3 years ago
The average speed of a nitrogen molecule in air is about 6.70 ✕ 102 m/s, and its mass is about 4.68 ✕ 10-26 kg.(a) If it takes 3
Sveta_85 [38]

Answer:

a = 4.32*10^15 m/s^2

Explanation:

In order to calculate the acceleration of the nitrogen molecule, you take into account that the force experienced by the molecule, is equal to the change in its momentum:

F=\frac{\Delta p}{\Delta t}=m\frac{\Delta v}{\Delta t}       (1)

m: mass of the nitrogen molecule

Δv: change in the speed of the molecule

Δt: time lapse of the change of the momentum of the molecule = 3.10*10^-13 s

Furthermore, by the Newton second law, you have:

F=ma=m\frac{\Delta v}{\Delta t}\\\\a=\frac{\Delta v}{\Delta t}       (2)

The change in the speed is given by:

\Delta v=v-v_o=6.70*10^2m/s-(-6.70*10^2m/s)=1.34*10^3\frac{m}{s}

where you have taken into account the direction of the initial and final speed.

You replace the values of all parameters in the equation (1) in order to calculate the acceleration:

a=\frac{1.34*10^3m/s}{3.10*10^{-13}s}=4.32*10^{15}\frac{m}{s^2}

The acceleration of the nitrogen molecule is 4.32*10^15m/s^2

5 0
3 years ago
For a centrifugal compressor, the flow at the exit of the blade (state 2) has a velocity of 250 m/s with an angle of 15 degrees
shtirl [24]

The velocity at the end of vaneless space(state 3) is  965.92 m/s

<h3>What is centrifugal compressor?</h3>

It increases kinetic energy to the airstream using a rotating element and then converts it into potential energy in the form of pressure.

Temperature at state 2, T₂ =T₀ + c/2Cp

Substitute T₀ =450K, c=250m/s, Cp =1005, we get

T₂ =418.90K

From the velocity triangle, sinβ₂ =c₂/v₂

v₂ = 250/sin (90°-75°) = 965.92 m/s

Thus, the velocity at the end of vaneless space is 965.92 m/s.

Learn more about centrifugal compressor.

brainly.com/question/9131351

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6 0
3 years ago
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