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2 years ago

A resin tube and a PVC rod are both rubbed against styrofoam. Do

1 answer:

Ivan2 years ago

6 0

The concepts of electrostatics allow us to find the result for the question about the electric forces in the two tubes is:

The tubes are attracted by having charges of different signs.

<h3>Electrostatics</h3>

Electrostatics studies the transfer of charge between bodies when they rub together, in generating the charges of the insulating bodies they are not mobile, so to transfer them from one body to another they must be in contact.

The force electric between charges is of two types:

Attractive. If the charges are of different signs.

Repulsive. If the charges are of the same sign.

The transferred charge depends on the bodies involved in the tables showns that the resin is positively charged when rubbed, the PVC acquires very little charge and polystyrene acquires a negative charge due to rubbing.

They indicate that the resin is rubbed with polystyrene, therefore the resin must acquire a positive charge and the polystyrene a negative charge.

Then the PVC is rubbed with the polystyrene, which initially we will assume neutral, the PVC does not acquire a charge and the polystyrenes acquires a negative charge, if the polystyrene is isolated from the ground, it shares this negative charge with the PVC, therefore the two materials remain with half of the negative charge.

Finally, we bring the resin, which is positively charged, closer to the PVC, which has a slight negative charge, therefore the two bodies must attract each other.

In conclusion using the concepts of electrostatics we can find the result for the question about the electric forces in the two tubes is:

The tubes are attracted by having charges of different signs.

Learn more about electrostatics here: brainly.com/question/17692887

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A 730-keV gamma ray Compton-scatters from an electron. Find the energy of the photon scattered at 120°, the kinetic energy of th

romanna [79]

Answer:

Energy of scattered photon is 232.27 keV.

Kinetic energy of recoil electron is 497.73 keV.

The recoil angle of electron is 13.40°

Explanation:

The energy of scattered photon is given by the relation :

$E_{2}=\frac{E_{1} }{1+(\frac{E_{1} }{m_{e}c^{2} })(1-\cos\theta) }$ .....(1)

Here E₁ is the energy of incident photon, E₂ is the energy of scattered photon, $m_{e}$ is mass of electron and θ is scattered angle.

Substitute 730 keV for E₁, 511 keV for $m_{e}$ and 120° for θ in equation (1).

$E_{2}=\frac{730 }{1+(\frac{730 }{511 })(1-\cos120) }$

E₂ = 232.27 keV

Kinetic energy of recoil electron is given by the relation :

K.E. = E₁ - E₂ = (730 - 232.27 ) keV = 497.73 keV

The recoil angle of electron is given by :

$\cot\phi=(1+\frac{E_{1} }{m_{e}c^{2} })\tan\frac{\theta}{2}$

Substitute the suitable values in above equation.

$\cot\phi=(1+\frac{730 }{511 })\tan\frac{120}{2}$

$\cot\phi=4.20$

$\phi$ = 13.40°

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3 years ago

Drag the tiles to the boxes to form correct pairs.

Alenkasestr [34]

The horses name was Friday

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3 years ago

Duff is a breakdancer whose signature move is spinning around on his head while his body is upside down. Which axis is Duff rota

padilas [110]

Answer:

vertical axis

Explanation:

Duff is a breakdancer whose signature move is spinning around on his head while his body is upside down. It means that the center of axis lies at the center of head. it means that Duff is rotating at vertical axis.

Hence, the correct option is (b) "vertical axis"

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3 years ago

Which properties are characteristics of pure substances and which are charactertics of mixture

wolverine [178]

Explanation:

Pure substances are typically elements and compound with the following characteristics:

Pure substances are distinct substances.
They are homogeneous in all their parts i.e they are the same all through.
They have a definite composition
They cannot easily be separated or broken down into simpler substances by physical means.
Separation by physical means is not easy
They have a unique sets of physical properties

Impure substances are mixtures. They have the following features:

Their composition is indefinite i.e they consist of two or more elements and or compounds in any proportion by mass.
Constituents retain their identities i.e physical properties are retained.
The constituents reacts differently to changed conditions.
They can easily be separated into their constituents by physical methods.

learn more:

Mixtures brainly.com/question/1446244

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3 years ago

What type of activities do you like to do and why? How can these activities help your personal physical fitness?

LenaWriter [7]

Answer:

This is opinion, but i'll share some stuff, and reasons.

Explanation:

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3 years ago