3 years ago

Acceleration is equal to the initial velocity minus the final velocity, then divided by time.true or false

Physics

1 answer:

tatiyna3 years ago

5 0

Almost true but not quite.

That would give you the negative of the actual acceleration.

It should be the other way around:

(final v) minus (initial v), then divide by time.

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When the valve between the 2.00-L bulb, in which the gas pressure is 2.00 atm, and the 3.00-L bulb, in which the gas pressure is

padilas [110]

Answer:

$P_{C} = 3.2\, atm$

Explanation:

Let assume that gases inside bulbs behave as an ideal gas and have the same temperature. Then, conditions of gases before and after valve opened are now modelled:

Bulb A (2 L, 2 atm) - Before opening:

$P_{A} \cdot V_{A} = n_{A} \cdot R_{u} \cdot T$

Bulb B (3 L, 4 atm) - Before opening:

$P_{B} \cdot V_{B} = n_{B} \cdot R_{u} \cdot T$

Bulbs A & B (5 L) - After opening:

$P_{C} \cdot (V_{A} + V_{B}) = (n_{A} + n_{B})\cdot R_{u} \cdot T$

After some algebraic manipulation, a formula for final pressure is derived:

$P_{C} = \frac{P_{A}\cdot V_{A} + P_{B}\cdot V_{B}}{V_{A}+V_{B}}$

And final pressure is obtained:

$P_{C} = \frac{(2\,atm)\cdot (2\,L)+(4\,atm)\cdot(3\,L)}{5\,L}$

$P_{C} = 3.2\, atm$

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3 years ago

Calculate the average speed of a runner who runs to for 500 meters in 40 second

siniylev [52]

Answer:

12.5

Explanation:

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3 years ago

A wave with a frequency of 0.5 Hz and a speed of 10 m\s has a wavelength of..

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Wavelength = (speed) divided by (frequency) = 10/0.5 = <span>20 </span>

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4 years ago

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Archy [21]

Answer:

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Explanation:

i think that's the answer and it could also be expressed as m×g×d

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Explanation:

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3 years ago

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