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Vikentia [17]
1 year ago
12

Question 11

Physics
1 answer:
notka56 [123]1 year ago
3 0

The volume of the gas once it reaches the surface of water is 2 liters.

The volume of the air in balloon at depth of 100ft (30m) is 500ml.

The pressure at this point is 4 atm.

Assuming that the balloon have no compression by rubber of balloon the volume of air at the water surface is V.

The pressure at the surface of water is 1 atms.

As we know, from the ideal gas equation,

PV = nRT

Where,

P is the Pressure of gas,

V is the volume of the gas,

n is the number of moles,

R is the gas constant whose value is 0.082057 L atm mol-1 K-1,

T is the temperature.

Assuming that the temperature is constant,

We know,

PV = nRT

All quantities on the right side are constants,

So, we can write,

P₁V₁ = P₂V₂

Putting all the the values,

4(0.5) = 1V₂

V₂ = 2 Liters.

The volume of the air at the surface is 2 liters.

1 liter = 0.001 m

Hence,

2 liters = 0.002 m³

So the volume of air at the surface is 0.002m³.

To know more about Ideal gas Equation, visit,

brainly.com/question/20348074

#SPJ9

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The energy per unit volume in an electromagnetic wave is: ________
Marianna [84]

Answer:

c.

Explanation:

Electromagnetic waves are waves that are generated when an electric field and a magnetic field vibrate together. They are usually created whenever an electric field collides with a magnetic field.

In more generic terms for an electric field, the energy per unit volume is given by:

Energy density = \dfrac{1}{2}\varepsilon _oE^2

For magnetic field:

Energy density =\dfrac{\beta^2}{2 \mu _o}

∴

For the electromagnetic wave (u):

Total energy density is:

u = \dfrac{1}{2}\varepsilon_oE^2 + \dfrac{\beta ^2}{2 \mu_o}

Due to the fact that the energy related with both fields is equivalent:

Then:

E = cB

6 0
3 years ago
When riding your dirt bike you run into a tree which causes your bike to immediately come to a stop. You fly over the handle bar
Natali5045456 [20]
Newton's first law of motion. Because you fly over the handlebars and you land a few feet away on the ground. Your bike would stop immediately because of the unbalanced force.
3 0
4 years ago
Read 2 more answers
A weight lifter lifts a 1.0 x 103 N weight 1.5 m in 2.0 s. The power is?
viktelen [127]

Answer:

750W

Explanation:

Given parameters:

Weight = 1 x 10³N = 1000N

Distance  = 1.5m

Time  = 2s

Unknown:

Power = ?

Solution:

Power is the rate at which work is done

  Work is the force applied on a body to move it through a particular distance

         Work = force x distance

            Power = \frac{work}{time}

Now, work = 1000 x 1.5 = 1500J

So;

     Power  = \frac{1500}{2}   = 750W

5 0
3 years ago
The plates of a parallel-plate capacitor are maintained with a constant voltage by a battery as they are pushed together, withou
Dominik [7]

Answer:

The amount of charge on the plates increases during this process

Explanation:

In order to maintain a constant voltage across the plates, pushing the plates closer will increase the charge on the plate

7 0
3 years ago
Plz help ASAP I will give brainliest PLZ
Natasha2012 [34]

Answer:

1.8m/s^2

Explanation:

Since the two ropes are going up, their combined force is 105+115=220N. With a gravitational force of 186N, the force of the two ropes pulling up the will be 220-186=34N.

Now we need the mass of the bucket itself in order to find the acceleration of the bucket (remember that F=ma and m is needed to find a). Since gravitational acceleration is 9.8m/s^2 and F=186N, 186/9.8=18.97959184 kg for the mass of the bucket.

Now that we have the mass of the bucket, we can find the acceleration of the bucket. Since F=34N from earlier, 34N/18.97959184kg=1.791397849m/s^2=1.8m/s^2 is the acceleration of the bucket.

Therefore, 1.8m/s^2 is the correct answer.

Please mark brainliest!

4 0
3 years ago
Read 2 more answers
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