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3 years ago

11

Determine the tension in the string that connects M2 and M3.

1 answer:

Ivan3 years ago

4 0

<h3><em><u>therefore</u></em><em><u> </u></em><em><u>mass </u></em><em><u>m1=</u></em><em><u>4</u></em><em><u>.</u></em><em><u>8</u></em><em><u> </u></em><em><u>kg </u></em><em><u>and </u></em><em><u>the </u></em><em><u>tension</u></em><em><u> </u></em></h3><h3><em><u>in </u></em><em><u>the </u></em><em><u>horizontal</u></em><em><u> </u></em><em><u>spring </u></em><em><u>T2=</u></em><em><u>1</u></em><em><u>0</u></em><em><u>N</u></em><em><u>.</u></em></h3>

<h2><em><u>HOPE</u></em><em><u> </u></em><em><u>IT</u></em><em><u> HELPS</u></em><em><u> YOU</u></em><em><u> </u></em></h2>

<h2><em><u>PLEASE</u></em><em><u> </u></em><em><u>Mark</u></em><em><u> </u></em><em><u>me </u></em><em><u>as </u></em><em><u>brainliest.</u></em></h2>

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In electricity distribution, why is low voltage safer for consumers?

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Answer:

Explanation:

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3 years ago

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3 years ago

A positively charged particle initially at rest on the ground accelerates upward to 200m/s in 2.60s . The particle has a charge-

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Answer:

E = 867 N/C, upward.

Explanation:

Assuming no other forces acting on the particle, it must obey Newton's 2nd Law, as follows:

$F_{net} = m*a (1)$

There are two forces acting on the particle in the vertical direction, one due to the electric field, and the other due to gravity.
Since the particle is positively charged, assuming that the electric field aims upward, we can write the following expression for the left side of (1):

$F_{net} = q*E - m*g = m*a (2)$

Since we know that q/m = 0.1 C/kg,
⇒ q = 0.1m C/kg
Replacing this value of q in (2), and simplifying masses, we get:

$F_{net} = 0.1 *E - 9.8 m/s2 = a (3)$

We can find the value of a, simply applying the definition of acceleration:

$a =\frac{\Delta v}{\Delta t} = \frac{200m/s}{2.6s} =76.9 m/s2 (4)$

Replacing (4) in (3) and solving for E, we get:
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3 years ago

An ideal gas, initially at a pressure of 11.2 atm and a temperature of 299 K, is allowed to expand adiabatically until its volum

Tju [1.3M]

Answer:

The pressure is $P_2 = 4.25 \ a.t.m$

Explanation:

From the question we are told that

The initial pressure is $P_1 = 11.2\ a.t.m$

The temperature is $T_1 = 299 \ K$

Let the first volume be $V_1$ Then the final volume will be $2 V_1$

Generally for a diatomic gas

$P_1 V_1 ^r = P_2 V_2 ^r$

Here r is the radius of the molecules which is mathematically represented as

$r = \frac{C_p}{C_v}$

Where $C_p \ and\ C_v$ are the molar specific heat of a gas at constant pressure and the molar specific heat of a gas at constant volume with values

$C_p=7 \ and\ C_v=5$

=> $r = \frac{7}{5}$

=> $11.2*( V_1 ^{\frac{7}{5} } ) = P_2 * (2 V_1 ^{\frac{7}{5} } )$

=> $P_2 = [\frac{1}{2} ]^{\frac{7}{5} } * 11.2$

=> $P_2 = 4.25 \ a.t.m$

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3 years ago

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Solnce55 [7]

The answer is 48Kmh because it is 120km divided by 2.5 or 2 and a half hours

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4 years ago