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3 years ago

Question 1 (1 point)

Physics

1 answer:

puteri [66]3 years ago

3 0

Answer:

250 N

Explanation:

$a = \frac{vf - vi}{t}$

Vf=final velocity

Vi =initial velocity

=70-20/2=25m/s^2

F=ma

=10kg * 25m/s^2

=250N

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g A large tank, at 400 kPa and 450 K, supplies air to a converging-diverging nozzle of throat area 4 cm2 and exit area 5 cm2. Fo

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Answer:

A) ≥ 325Kpa

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Explanation:

Given data :

A large Tank : Pressures are at 400kPa and 450 K

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<u>a) Determine the range of back pressures that the flow will be entirely subsonic</u>

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<u>B) Have a shock wave</u>

The range of back pressures for there to be shock wave inside the nozzle

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attached below is a detailed solution

C) Have oblique shocks outside the exit

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D) Have supersonic expansion waves outside the exit

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Answer:

A: No because it is nor changing speed or direction

B: Yes because it changes direction even though the speed is constant

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2 years ago

A spring stretches 0.150 m when a 0.30 kg mass is hung from it. The spring is then stretched an additional 0.100 m from this equ

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Answer:

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c) $a_m=6.561m/s^2$

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Explanation:

From the question we are told that:

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$V_m=A\omega$

Where

A=Amplitude

$A=0.100m$

And

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$F=\frac{1}{T}$

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Where

'= signify order of differentiation

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