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wariber [46]
3 years ago
10

An electrically neutral balloon is rubbed on cloth and becomes positively charged. What can be said about its mass?

Physics
2 answers:
Artyom0805 [142]3 years ago
6 0

Answer:

There is net transfer of energy and more over the balance between the number of charge particles occurs when there is some contact between any two surfaces or bodies. So, when an electrically neutral balloon is rubbed on a cloth and becomes positively charged it is just because of the number of charges that are transferred from a more charged body towards a body of having less charges on it. So, the masses of the positrons and the electrons are some how equal when compared.

Making, it more easy to understand that the two surfaces will have an equal number of positrons and electrons on both the bodies or object's surfaces.

Neporo4naja [7]3 years ago
4 0

Answer:

the mass is the same

Explanation:

the mass of electrons is negligible so losing some to become positively charged causes no change in mass

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21) Acceleration from D to E: 1 m/s^2

22) The acceleration of the bus from D to E is 1 m/s^2

Explanation:

21)

The acceleration of an object is equal to the rate of change of velocity of the object. Mathematically:

a=\frac{v-u}{t}

where

u is the initial velocity

v is the final velocity

t is the time elapsed

In this problem, we want to measure the acceleration of the bus from point D to point E. We have:

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- Final velocity at point E: v = 5 m/s

- Time elapsed from D to E: t = 21 - 16 = 5 s

Therefore, the acceleration between D and E is

a=\frac{5-0}{5}=1 m/s^2

22) This question is the same as 21), so the result is the same.

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1600 AM broadcasts radio waves with wavelengths<br> of about 187.37 m. Convert this to miles.
nikklg [1K]

Answer:

The wavelength in miles is <u>0.1165 miles</u>.

Explanation:

Given:

Wavelength of the radio wave is 187.37 m.

Now, the wavelength is given in meters.

We need to convert the wavelength from meters to miles.

In order to convert meters to miles, we have to use their conversion factor.

We know that,

1 meter = \frac{1}{1609}\ miles

Therefore, the conversion factor is given as:

CF=\frac{1}{1609}\ miles\ per\ meter

So, the wavelength in miles is given as:

Wavelength=\textrm{Wavelength in meters}\times CF\\\\Wavelength=187.37\ m\times \frac{\frac{1}{1609}\ miles}{1\ m}\\\\Wavelength=\frac{187.37}{1609}\ miles\\\\Wavelength=0.1165\ miles

Hence, the wavelength in miles is 0.1165 miles.

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3 years ago
The force needed to move an object 14 meters with 83 joules of work is what?
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