The correct notation for an alpha particle

Answers

Answer 1

Answer:

Answer:

α or He⁴₂

Explanation:

*The computer does not allow for the 4 and 2 to be directly inline

The alpha particle can be notated as a simple "α". Since that symbol is the letter alpha in Greek. Another way of notating the particle is "He⁴₂" (where the 2 is directly under the 4), this is because an alpha particle contains the exact same components of a helium nucleus, two protons, and two neutrons (with an atomic mass of four).

Answer 2

Answer: Can't find the options on the keyboard so ill try to describe it. I think either an He symbol or the greek letter alpha is accepted. There must be a 4 at the top left and a 2 at bottom left.

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Answers

Power is the amount of energy consumed per unit time. Having no direction, it is a scalar quantity. As is implied by the equation for power, a unit of power is equivalent to a unit of work divided by a unit of time. The formula would be as follows:

P = W/t

We calculate as follows:

500 W = 15000 J / t
t = 30 s

What is the energy of a photon whose frequency is 6.0x10^20 hz?

Answers

Energy of photon is given by formula

$E = h\nu$

here

h = Planck's constant

$h = 6.6* 10^(-34)$

$\nu = frequency = 6 * 10^(20)Hz$

now the energy is given by

$E = 6.6*10^(-34) * 6 * 10^(20)$

$E = 3.96 * 10^(-13) J$

give me some answer choices and i will be happy to help

What type of electron is available to form bonds?

Answers

Answer:

Valence electrons

Explanation:

The valence electrons are found in the outermost shell of an atom. They are the most loosely held electrons found within an atom. These valence electrons are involved and are used to form bonds when atoms combines together.

The energy required to remove these loosely held electrons is relatively low compared to electrons located in the inner orbitals. This is why when atoms combines, they use the outermost electrons to form bonds and mimic stable atoms like those of the noble gases.

Calculate the potential energy of an object with a mass of 15 kg while sitting on a shelf that his 20 m high

Answers

Answer:

2943J

Explanation:

Ep = mgh

given that,

m = 15kg

h= 20m

and

g = 9.81 m/s^2

Ep= 15 × 9.81 × 20

Ep= 2943J

Help please thanks in advance x Red and violet are at opposite ends of the spectrum of visible light.
Describe two things they have in common and two ways in which they differ. X

Answers

Difference: red has a higher wavelength than violet

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Solid Gas Liquid Fastest Speed drag and drop answer here Medium Speed drag and drop answer here Slowest Speed drag and drop answer here

Answers

Answer:

Gas has the fastest moving particles. Liquid has the second fastest. Solid's particles cannot move.

Explanation:

Gas's molecules are spread apart and have space to move. Liquids have loosely held molecules. Solid's molecules don't move because they are tighly packed.

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