3 years ago

Do all protostars become stars?

Physics

2 answers:

Arada [10]3 years ago

7 0

No not all of them. some can though.

jeka57 [31]3 years ago

5 0

Yes, they all eventually become a star.

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Physics acceleration

Mademuasel [1]

F = F⁰ - Ff

F = 360 N - 340 N

F = 20 N

F = m × a

20 N = 50 kg × a

a = 20 N / 50 kg

a = 0.4 m/s²

#LearnWithEXO

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3 years ago

7. A stereo is able to convert 20% of its electrical energy into sound. If 1000 J of sound energy is produced, calculate the ele

Sonja [21]

Answer:

As 20/100 E= 1000

E= 10,000/2

=5000J

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3 years ago

A red car has a head-on collision with an approaching blue car with the same magnitude of momentum. A green car driving with the

WARRIOR [948]

Answer:

The head on Collison because you have both cars going (for the sake of it 30mph) and they both collide the energy from that is 60mph because the speed is combined with the two cars.

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3 years ago

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Hydrogen is a nonmetal with many nonmetal properties. Why is it on the periodic table with the metals in Group 1?

mrs_skeptik [129]

Answer:

This is because it has ns1 electron configuration like the alkali metals.

Pls Mark Brainiest, am trying to become Virtuoso

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3 years ago

A Venturi tube may be used as a fluid flowmeter. Suppose the device is used at a service station to measure the flow rate of gas

leonid [27]

Answer

given,

flow rate = p = 660 kg/m³

outer radius = 2.8 cm

P₁ - P₂ = 1.20 k Pa

inlet radius = 1.40 cm

using continuity equation

A₁ v₁ = A₂ v₂

π r₁² v₁ = π r₁² v₂

$v_1= \dfrac{r_1^2}{r_2^2} v_2$

$v_1= \dfrac{1.4^2}{2.8^2} v_2$

$v_1= 0.25 v_2$

Applying Bernoulli's equation

$\Delta P = \dfrac{1}{2}\rho (v_2^2-v_1^2)$

$\Delta P = \dfrac{1}{2}\rho (v_2^2-(0.25 v_2)^2)$

$\Delta P = \dfrac{1}{2}\rho v_2^2 (1 - 0.0625)$

$v_2=\sqrt{\dfrac{2\Delta P}{\rho(1 - 0.0625)}}$

$v_2=\sqrt{\dfrac{2\times 1200}{660 \times(1 - 0.0625)}}$

v₂ = 1.97 m/s

b) fluid flow rate

Q = A₂ V₂

Q = π (0.014)² x 1.97

Q = 1.21 x 10⁻³ m³/s

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3 years ago