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3 years ago

8

how does a steam engine work? A. steam expands and spins an axle B. steam enters a cylinder and pushes a piston C. steam turns a

turbine D. steam causes wheels to turn

2 answers:

Artist 52 [7]3 years ago

6 0

The correct answer is B

joja [24]3 years ago

5 0

B . Steam enters a cylinder and pushes a piston

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A car drives around a horizontal, circular track at constant speed. Consider the following three forces that act on the car: (1)

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2 years ago

Write the two variables that are dependent on the force of the charge

Murljashka [212]

Answer:

the distance between the particles and also the amount of electric charge they carry.

Explanation:

yup

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2 years ago

A 45.2-kg person is on a barrel ride at an amusement park. She stands on a platform with her back to the barrel wall. The 3.74-m

elena-14-01-66 [18.8K]

Answer:

<u><em>1,230N</em></u>

Explanation:

<u>1. Name of the variables:</u>

$f:frequency\\\\ \omega:angular\text{ }speed\\\\ a_c:centripetal\text{ }acceleration\\\\ F_c:centripetal\text{ }force\\ \\ m:mass\\ \\ d:diameter\\ \\ r:radius\\ \\ g:gravitational\text{ }acceleration$

<u>2. Formulae:</u>

$f=\dfrac{number\text{ }of\text{ }revolutions}{time}$

$\omega=2\pi f$

$a_c=\omega^2 r$

$F_c=m\times a_c$

<u>3. Solution (calculations)</u>

$f=\dfrac{1}{1.65s}=0.\overline{60}s^{-1}$

$\omega=2\pi\times0.\overline{60}\approx 3.808rad/s$

$a_c=(3.808rad/s)^2\times (3.74/2m)=27.12m/s^2$

$F_c=45.2kg\times27.12m/s^2=1,225.67N\approx 1,230N$

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3 years ago

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2 years ago

As air pressure decreases, what happens

Naya [18.7K]

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I believe it is B, not 100% sure though

Explanation:

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2 years ago