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3 years ago

6

How many protons are in hydrogen -2

1 answer:

skad [1K]3 years ago

5 0

The number of protons in the nucleus of an atom determines
what element the atom is an atom of.
If there's one proton in the nucleus of an atom, then the atom
is an atom of Hydrogen.
If there's any other number of protons other than one in the nucleus
of an atom, then the atom is an atom of some other element. It's not
an atom of Hydrogen.

If you say you have an atom of Hydrogen, then I know there's exactly
one and only one proton in its nucleus. If you call it Hydrogen-2, I know
you must be talking about the Atomic Weight of the nucleus, and there
must be a neutron in there too.

If you called it Hydrogen-37, I would know that there would still be exactly
one proton there, lost in a crowd of 36 neutrons.

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What is the magnitude of a the vertical electric field that will balance the weight of a plastic sphere of mass 2. 1 g that has

sladkih [1.3K]

The magnitude of a vertical electric field that will balance the weight of a plastic sphere of mass 2. 1 g that has been charged to -3. 0 NC is 6.86 × $10^{6}$ N/C.

An electric field is the physical field that surrounds electrically charged particles and exerts a force on all other charged particles in the field, either attracting or repelling them. It also refers to the physical field of a system of charged particles.

It is given that,

Mass of sphere, m = 2.1 g =0.0021kg

Charge,q = ₋3nC = ₋ 3 ₓ $10^{-9}$

To balance the weight of a plastic sphere, we must determine the magnitude of the electric field. So,

$ma= qE$

a = g

$E = \frac{mg}{q}$

E = $\frac{0.0021 * 9.8}{-3 * 10^{-9} }$

E = 6860000 N/C

E = 6.86 × $10^{6}$ N/C

Hence, the magnitude of the electric field that balances its weight is 6.86 × $10^{6}$ N/C .

To know more about electric field refer to: brainly.com/question/8971780

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5 0

1 year ago

A device that assures the delivery of electric power without interruption is a(n)?

mario62 [17]

The answer should be UPS

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2 years ago

Jenny and Fred both play a long note on their trombones. A stationary observer hears the sound increasing and decreasing repeate

lilavasa [31]

E=the sound waves from the trombones have slightly different velocity

7 0

3 years ago

Read 2 more answers

There is a clever kitchen gadget for drying lettuce leaves after you wash them. It consists of a cylindrical container mounted s

lukranit [14]

Answer:

Option B

$a=19 m/s^{2}$

Explanation:

Given information

Radius of container, r=12cm=12/100=0.12m

Angular velocity= 2 rev/s, converted to rad/s we multiply by 2π

Angular velocity, $\omega=2*2\pi =12.56637061$

We know that speed, $v=r\omega$

Centripetal acceleration, $a=\frac {v^{2}}{r}$ and substituting $v=r\omega$ we obtain that

$a=r\omega^{2}$

Substituting \omega for 12.56637061 and r for 0.12

$a=0.12*(12.56637061)^{2}=18.94964045 m/s^{2}$

Rounded off, $a=19 m/s^{2}$

7 0

3 years ago

A cart is pulled by a force of 250 N at an angle of 35° above the horizontal. The cart accelerates at 1.4 m/s2. The free-body di

Vikki [24]

Answer:

Mass of the cart = 146 kg

Explanation:

A cart is pulled by a force of 250 N at an angle of 35° above the horizontal.

The cart accelerates at 1.4 m/s² horizontally.

Horizontal force = Fcosθ = 250 cos35° = 204.79N

We have F = ma

Substituting

204.79 = m x 1.4

m = 146.28 kg = 146 kg

Mass of the cart = 146 kg

3 0

2 years ago