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labwork [276]
3 years ago
11

Put the balloon near (BUT NOT TOUCHING) the wall. Leave about as much space as the width of your pinky finger between the balloo

n and wall. Does the balloon move, if so which way
Physics
1 answer:
natka813 [3]3 years ago
3 0

Answer:

Move towards the wall.

Explanation:

When the balloon is kept near to the wall not touching the wall, there is a force of electrostatic attraction so that the balloon moves towards the wall and stick to it.

As there is some charge on the balloon and the wall is uncharged so the force is there due to which the balloon moves towards the wall.

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An electron (mass 9 × 10-31 kg) is traveling at a speed of 0.92 in an electron accelerator. An electric force of 1.4 × 10-13 N i
pogonyaev

Given Information:

Mass of electron = m = 9x10⁻³¹ kg

initial speed of electron = v₁ = 0.92c

Force = F =  1.4x10⁻¹³ J

Distance = d = 3 m

Required Information:

Final speed of electron = v₂ = ?

Answer:

Final speed of electron = v₂ = 2.974x10⁸ m/s

Explanation:

As we know from the conservation of energy,

E₂ - E₁ = W

E₂ = E₁ + W

Where E₂ is the final energy of electron and E₁ is the initial energy of electron

The above equation can be written in the form of particle energy

γ₂mc² = γ₁mc² + W

where γ₁ and γ₂ are given by

γ₁ = 1/√1 - (v₁/c)²

γ₂ = 1/√1 - (v₂/c)²

First calculate γ₁

γ₁ = 1/√1 - (0.92c/c)²

γ₁ = 2.55 m

Now calculate γ₂

γ₂ = (γ₁mc² + W)/mc²

First we need to find the work done

W = F*d

W = 1.4x10⁻¹³*3

W = 4.2x10⁻¹³ J

so γ₂ is

γ₂ = (2.55*9x10⁻³¹*(3x10⁸)² + 4.2x10⁻¹³)/9x10⁻³¹*(3x10⁸)²

γ₂ = 7.73

Now we can find the new speed of the electron

γ₂ = 1/√1 - (v₂/c)²

Re-arranging the above equation results in

v₂ = c*√(1 - 1/γ₂²)

v₂ = 3x10⁸*√(1 - 1/7.73²)

v₂ = 2.974x10⁸ m/s

4 0
3 years ago
Match the layer of Earth with its characteristic.
mote1985 [20]

Answer:

Explanation:

The Asthenosphere -- drives the movement in the plates

<em>It is a weak and flexible part of the upper mantle of the planet Earth.</em>

<em>It is located below the lithosphere. The depth of it is between 200 and 80 kilometers below the surface. It is usually solid but in some regions it is fluid. The temperature dictates the thickness of the Asthenosphere.</em>

The Core -- the hottest layer of the Earth.

<em>The inner Core of the Earth is a layer that's located in the core of it.  By definition, it is a rock-hard ball that has the radius of 1,220 kilometers, making it 20% of the Earth's radius and 70% of the Moon's radius. The samples are not discovered. It is believed that it has the composition of iron-nickel infusion along with other elements. The temperature is appx. 5430 °C, which is similar to the temperature of the surface of the Sun.</em>

Mesosphere -- contains the lower mantle

<em>By definition, it comes from the Greek word mesos, which means '' middle ''.</em>

<em>It is the third layer of the Earth. It is located above the stratosphere and below the thermosphere. The higher the altitude,  the lower the temperature. It ends in the coldest part of the Earth, Mesopause. And it begins at the Stratosphere.</em>

Lithosphere -- contains the tectonic plates

<em>By the definition, it is also a word that came from the Greek language. It comes from the word '' lithos '' which means '' rocky ''.</em>

<em>It is a hard, outer part of the Earth.</em>

<em>On the planet Earth, it is made out of the crust of the upper mantle.  The rocks from the Lithosphere are elastic.</em>

<em>They are two types of Lithosphere -- the oceanic Lithosphere and Continental Lithosphere.</em>

<em />

<em />

<em />

6 0
3 years ago
Read 2 more answers
A chemical is always the same thing as an element .<br><br> True <br> False
olya-2409 [2.1K]
That would be false

Hope this helps :)
3 0
3 years ago
Read 2 more answers
The shortest wavelengths that we can see are experienced as
max2010maxim [7]
The shortest wavelengths that you can see are experienced
as violet light, or whatever is the last color you can see on the
"blue end" of the spectrum.  It's not exactly the same for all eyes.
4 0
4 years ago
The speed of sound through oxygen at 0°C is 316 meters per second. The speed of sound through solid copper is 5,010 meters per s
vivado [14]

Answer:

1,450 meters per second

Explanation:

5 0
4 years ago
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