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3 years ago

Which statements about a sample of gas containing molecules of different masses are true?

Physics

1 answer:

Alexxandr [17]3 years ago

6 0

Answer:

More-massive gas molecules in the sample have lower rms speed than less-massive ones.

Explanation:

The rms speed is defined as the prediction that how fast the molecule travel at a given temperature.

Mathematically, rms speed can be written as,

$v_{rms} =\sqrt{\frac{3RT}{M} }$

Here, T is the temperature, M is the mass of gas molecule.

Now from this it is clearly seen that rms speed is inversely related with mass of the gas molecule.

Therefore, gas molecule which posses more mass in the sample have smaller rms speed than less-massive ones.

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A speeding car traveling at 24.8 m/s passes a police car that is at rest. The police car begins its pursuit at the instant the s

marusya05 [52]

Answer:

the acceleration required is 1.37m/s^2

Explanation:

The car is having a constant velocity movement, so if we calculate the time to reach 897m, we can use it to find the acceleration the policeman need to apply to reach the car.

$x=v*t\\t=\frac{x}{v}\\t=\frac{897m}{24.8m/s}\\t=36.17s$

the policeman is traveling with a constant acceleration starting from rest so:

$x=\frac{1}{2}*a*t^2\\\\a=\frac{2*x}{t^2}\\\\a=1.37 m/s2$

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3 years ago

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tangare [24]

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4 years ago

An object that is initially not rotating has a constant torque of 3.6 N⋅m applied to it. The object has a moment of inertia of 6

Korolek [52]

Answer:

0.6

Explanation:

Angular acceleration is equal to Net Torque divided by rotational inertia, which is the rotational equivalent to Newton’s 2nd Law. Therefore, angular acceleration is equal to 3.6/6 which is 0.6. Hope this helped!

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3 years ago

The tendency of all objects to continue with your previous motion when the net force acting on the object is zero is known as?

Bingel [31]

Answer:

Inertia

Explanation:

The state of motion of an object is defined by its velocity the speed with a direction. Thus, inertia could be redefined as follows: Inertia: tendency of an object to resist changes in its velocity - and ( in the absence of an unbalanced force ) will remain with a zero velocity.

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4 years ago

How can speed be defined

Anna11 [10]

Explanation:

C) distance / time

.......

6 0

3 years ago

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