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3 years ago

How many cubic feet are there in a gallon?

Physics

2 answers:

Kazeer [188]3 years ago

8 0

There are 0.133681 cubic feet in a gallon.

shtirl [24]3 years ago

5 0

1 gallon has 0.133681 cubic feet

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MA of the first class lever may be equal to, greater than 1.Why

Anika [276]

Answer:

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Explanation:

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2 years ago

Neglecting air resistance, the distance s left parenthesis t right parenthesis in feet traveled by a freely falling object is g

ivann1987 [24]

Explanation:

It is given that, the height of a certain tower is 862 feet i.e to reach on the ground the object should travel, s = 862 feet

The distance traveled by a freely falling object is given by :

$s(t)=16t^2$

$16t^2=862$

$t=\sqrt{53.875}$

t = 7.34 seconds

So, the object will take 7.34 seconds to fall to the ground from the top of the building. Hence, this is the required solution.

7 0

2 years ago

A rocket in deep space has an empty mass of 150 kg and exhausts the hot gases of burned fuel at 2500 m/s. It is loaded with 600

3241004551 [841]

Answer:

$v(10\,s) \approx 775.387\,\frac{m}{s}$

$v(20\,s)\approx 1905.350\,\frac{m}{s}$

$v(30\,s) \approx 4023.595\,\frac{m}{s}$

Explanation:

The speed of the rocket is given the Tsiolkovsky's differential equation, whose solution is:

$v (t) = v_{o} - v_{ex}\cdot \ln \frac{m}{m_{o}}$

Where:

$v_{o}$ - Initial speed of the rocket, in m/s.

$v_{ex}$ - Exhaust gas speed, in m/s.

$m_{o}$ - Initial total mass of the rocket, in kg.

$m$ - Current total mass of the rocket, in kg.

Let assume that fuel is burned linearly. So that,

$m(t) = m_{o} + r\cdot t$

The initial total mass of the rocket is:

$m_{o} = 750\,kg$

The fuel consumption rate is:

$r = -\frac{600\,kg}{30\,s}$

$r = -20\,\frac{kg}{s}$

The function for the current total mass of the rocket is:

$m(t) = 750\,kg - (20\,\frac{kg}{s} )\cdot t$

The speed function of the rocket is:

$v(t) = - 2500\,\frac{m}{s}\cdot \ln \frac{750\,kg -(20\,\frac{kg}{s} )\cdot t}{750\,kg}$

The speed of the rocket at given instants are:

$v(10\,s) \approx 775.387\,\frac{m}{s}$

$v(20\,s)\approx 1905.350\,\frac{m}{s}$

$v(30\,s) \approx 4023.595\,\frac{m}{s}$

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2 years ago

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Svetlanka [38]

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3 years ago

Domains blank and blank are made up of prokaryotes

ankoles [38]

<span>Archaebacteria and Eubacteria
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</span>

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3 years ago