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1 year ago

Help (๑¯◡¯๑)me please

Physics

2 answers:

Allushta [10]1 year ago

4 0

Answer:

<h3>Young modulus of elasticity for a gas is</h3><h2>Zero</h2>

Explanation:

As the gas doesn't undergo any changes 

so the young modules of gas is not defined...

leonid [27]1 year ago

3 0

We know

$\\ \rm\hookrightarrow Y=\dfrac{Stress}{Strain}$

$\\ \rm\hookrightarrow Y=\dfrac{\sigma}{\Delta \ell/\ell}$

Stress is zero

$\\ \rm\hookrightarrow Y=\dfrac{0}{\Delta \ell/\ell}$

$\\ \rm\hookrightarrow Y=0$

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An object of mass m is oscillating with a period T. The position x of the object as a function of time is given by the equation

Scrat [10]

What the equation given?

x(t)=Acos $\omega$ t

Maximum velocity occurs at the equilibrium position

Now

x(0)=Acos0[/tex]
x(0)=A

Now

As we know the formula

$\\ \rm\rightarrowtail V_max=A\omega$

These expressions can be used

3 0

2 years ago

Please help 2.

Mariulka [41]

Answer:

The new volume of the balloon is 8.8 L

Explanation:

Charles's Law consists of the relationship between the volume and the temperature of a certain amount of ideal gas, which is kept at a constant pressure. This law establishes that the volume is directly proportional to the temperature of the gas, that is to say that if the temperature increases, the volume of the gas increases and that on the contrary if the temperature of the gas decreases, the volume decreases.

In other words, Charles's law states that when the amount of gas and pressure are kept constant, the ratio between the volume and the temperature will always have the same value:

$\frac{V}{T}=k$

Having a certain volume of gas V1 that is at a temperature T1, by varying the volume of gas to a new value V2, then the temperature will change to T2, and it will be fulfilled:

$\frac{V1}{T1}=\frac{V2}{T2}$

In this case:

V1= 8.5 L
T1= 294 K
V2= ?
T2= 305 K

Replacing:

$\frac{8.5 L}{294 K}=\frac{V2}{305 K}$

Solving:

$V2=305 K*\frac{8.5 L}{294 K}$

V2=8.8 L

The new volume of the balloon is 8.8 L

7 0

2 years ago

When the north pole of a bar magnet is moved into a solenoid, the needle on a galvanometer attached to the solenoid moves to the

NNADVOKAT [17]

Answer:

The neddle of the galvanometer will move to the right at a faster speed.

Explanation:

Given:

The north pole of a bar magnet is moving towards a solenoid and the needle of the galvanometer moves to the left.

When a bar magnet has a relative deisplacement with respect to a solenoid, then it will induce some emf within the solenoid according to Faraday's law. When the north pole is moving towards the solenoid it will induce a current.

When the bar magnet is moving away from the solenoid at a faster speed, the rate of change of flux in the solenoid is faster. So the induced current will change in faster way, but in the opposite direction.

Thus, the neddle of the galvanometer will move to the right at a faster speed.

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scZoUnD [109]

The answer is B, because a heterogeneous mixture consists of elements that have the same appearance and composition, If sand, salt, and iron filings are combined, they would look like one uniform element rather than three separate elements.

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2 years ago

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2 years ago

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Help (๑¯◡¯๑)me please ​

Help (๑¯◡¯๑)me please