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Lena [83]
3 years ago
7

A particle moves along the x axis. Its position as function of time is given by x=6.8t+8.5t^2, where t is in seconds and x is in

meters. What is the acceleration as a function of time?
Physics
1 answer:
Vinil7 [7]3 years ago
8 0
Displacement=x-0=x (assuming the journey started at t=0)
time=t
x=ut+1/2 at^2
u=initial velocity=0
acceleration=a=((x-ut)*2)/t^2
a=(13.6t+17t^2)/t^2
a=17+13.6/t
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He does an experment.

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While researching scuba diving, Pablo reads how hot a tank should get while being filled with air. Which law best explains why t
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Answer:

Gay-Lussac’s law, because as the pressure increases, the temperature increases

Explanation:

First of all, we can notice that the volume of the tank is fixed: this means that the volume of the air inside is also fixed.

This means that in this situation we can apply Gay-Lussac's law, which states that:

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Mathematically:

p\propto T

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In this case, the tank is filled with air: this means that the pressure of the gas inside the tank increases. And therefore, according to Gay-Lussac's law, the temperature will increase proportionally, and this explains why the tank gets hot.

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3 years ago
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6. An earthquake releases two types of traveling seismic waves, called transverse and longitudinal waves. The average speed of t
zubka84 [21]

Answer:

The distance away the center of the earthquake is 1083.24 km.

Explanation:

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Speed of longitudinal wave = 5.7 km/s

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Using formula of distance

d=v\times t

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From the first equation

t=\dfrac{d}{9.1}

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d =5.7\times(\dfrac{d}{9.1}+71)

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d0.3736=404.7

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Hence, The distance away the center of the earthquake is 1083.24 km.

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