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3 years ago

9

A student compared some soccer players to the atoms in the gaseous state. Which of the following activities were the soccer play

ers most likely performing?
A. Lining up next to each other
B. Huddling close together for the ball
C. Running randomly in all directions
D. Slowly jumping up and down in their places

2 answers:

tensa zangetsu [6.8K]3 years ago

8 0

Answer:

The answer will be <em>D</em>

Explanation:

I choose answer <em>C</em> and got it wrong on the test. Also Liquid atoms vibrate fast and slide past each other. what answer <em>C </em>shows is a gas.

Elan Coil [88]3 years ago

6 0

Answer:

D

Explanation:

Slowly jumping up and down in their places

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(a).The speed of the water in the nozzle is 3.014 m/s.

(b). The pressure in the nozzle is 1.86 atm.

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(a). We need to calculate the speed of the water in the nozzle

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Where, A = area of pipe

$A=\pi\times \dfrac{d^2}{4}$

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Using Bernoulli's Theorem,

$P_{1}+\dfrac{1}{2}\rho\times v_{1}^2+\rho gh_{1}=P_{2}+\dfrac{1}{2}\rho\times v_{2}^2+\rho gh_{2}$

Where, $h_{1}=h_{2}$

$P_{1}+\dfrac{1}{2}\rho\times v_{1}^2=P_{2}+\dfrac{1}{2}\rho\times v_{2}^2$

$P_{1}=P_{2}+\dfrac{1}{2}\rho(v_{2}^2-v_{1}^2)$

Put the value into the formula

$P_{1}=192518 +\dfrac{1}{2}\times1000\times((0.46)^2-(3.014)^2)$

$P_{1}=188081.702\ Pa$

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