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Marysya12 [62]
4 years ago
8

A children’s roller coaster is released from the top of a track. If it’s maximum speed at ground level is 8 m/s, find the height

it was released from
Physics
1 answer:
cupoosta [38]4 years ago
4 0

Answer:

80 miles per 80 miles per hour so Likud those up So the kid throws up

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A diver 40 m deep in 10 degrees C fresh water exhales a 1.5 cm diameter bubble.
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0.0257259766982 m

Explanation:

P_2 = Atmospheric pressure = 101325 Pa

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The pressure is

P_1=P_2+\rho gh\\\Rightarrow P_1=101325+1000\times 9.81\times 40\\\Rightarrow P_1=493725\ Pa

From ideal gas law we have

\dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}\\\Rightarrow \dfrac{P_1\dfrac{4}{3\times8}\pi d_1^3}{T_1}=\dfrac{P_2\dfrac{4}{3\times8}\pi d_2^3}{T_2}\\\Rightarrow \dfrac{P_1d_1^3}{T_1}=\dfrac{P_2d_2^3}{T_2}\\\Rightarrow d_2=(\dfrac{P_1d_1^3T_2}{P_2T_1})^{\dfrac{1}{3}}\\\Rightarrow d_2=(\dfrac{493725\times 0.015^3\times (20+273.15)}{101325\times (10+273.15)})^{\dfrac{1}{3}}\\\Rightarrow d_2=0.0257259766982\ m

The diameter of the bubble is 0.0257259766982 m

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