If a certain gas occupies a volume of 12 l when the applied pressure is 6.0 atm , find the pressure when the gas occupies a volume of 3.0 l .

Answers

Answer 1

Answer: From Boyle's law, the volume of a fixed mass of a gas is inversely proportional to its pressure at constant absolute temperature.
Therefore; P1V1 =P2V2; where PV is a constant
hence; 12 × 6 = 3× p2
p2 = 72/3
= 24 atm
Therefore; the new pressure will be 24 atm

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The source of the centripetal force that arises when a runner rounds a curve on a track is _____.tension
friction
weight
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Answers

while taking a turn on a track, the track provides the frictional force acting towards the center of the curve. we know that to move in a curve, centripetal force is required. here since the frictional force acts towards the center, it provides the necessary centripetal force to move in circle. hence the correct choice is

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It's actually Friction.

I just did the test and got it right.

Train is traveling at an initial velocity of 68.325m/s. After 23.75 seconds it speeds up to a final velocity of 79.32m/s. What is the train's acceleration during this time

Answers

So,

We know that:
$acceleration = ( final\ velocity\ -\ initial\ velocity)/(time)$

Plug in the values.
$acceleration = (79.32 m/s^(2)\ -\ 68.325m/s^(2))/(23.75 secs)$
$acceleration = (10.995m/s^(2) )/(23.75 secs)$
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What is the distance traveled by an object that moves with an average speed of 6.0 meters per second for 8.0 seconds

Answers

The distance traveled by the object is 48 m.

The given parameters;

average speed of the object, = 6 meters per second

time of motion of the object, t = 8 s

The distance traveled by the object is calculated as follows;

$s = ((v+ u)/(2) )* t$

where;

$(v+u)/(2)$ is the average speed of the object

Now, substitute the given values and solve for the distance traveled by the object;

$s = ((v+ u)/(2) )* t\n\n\s = 6 * 8\n\n\s = 48\ m$

Thus, the distance traveled by the object is 48 m.

Learn more here: brainly.com/question/3267354

This is a Physics question where we need to figure out how many meters Cam can run per second. To figure this out we divide the distance by the change in time.

40/5.79 = 6.9 meters per second approximately.

As a change of state is occurring, the temperature of the system does not change. a. True
b. False

Answers

False. The temperature would change between the change of states.

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A train traveling at 82.8 kilometers per hour is blowing its horn as it approaches you. The horn has a frequency of 312 Hz. Assume the speed of the sound is 331 m/s. What is the observed frequency of the horn?335 Hz
312 Hz
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Answers

The answer is 335 Hz.

To calculate this, we will use the following formula:
f₀ = f × v ÷ (v - v₁)
where:
f₀ - frequency heard
f - actual frequency
v - speed of sound
v₁ - speed of source

We know:
f = 312 Hz
v = 331 m/s
v₁ = 82.8 km/h = 23 m/s

We need:
f₀ = ?

f₀ = f × v ÷ (v - v₁)
⇒ f₀ = 312 Hz x 331 m/s ÷ (331 m/s - 23 m/s)
⇒ f₀ = 312 Hz × 331 m/s ÷ 308 m/s
⇒ f₀ = 335.3 Hz ≈ 335 Hz

Thus, the frequency of the horn is 335 Hz.

Answer:

335 Hz

Explanation:

100%

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