the atomic mass of potassium is 39. if its atomic number is 9, it has how many neutrons within each potassium atom?

Answers

Answer 1

Answer: Atomic number is actually 19 as it has 19 protons. To make up the mass number of 39 it needs 20 more nucleons, these must come in the form of neutrons so it has 20 neutrons.

Related Questions

If you hit another object with your vehicle, your _______ will be slowed or stopped by the force of impact caused by that object upon impact.
Draw a diagram to show how two resistors R1 and R2 are connected in parallel.
Which statement best describes the equation caco3 2hcl → cacl2 co2 h2o?
Which sentence contains italicized words that are used as an infinitive phrase?a. Kelly went to the grocery store.b. Tom went there for some flour.c. Mark wanted to go, but not today.d. Jane parked her car behind a truck. ?
What is a caliper used for?

What force results in charged particles?A] Contact Force

B] Gravitational Force

C] The Force Of Electromagnetism

D] Force Push

Answers

B gravitational forces

Answer:

The Force Of Electromagnetism

Explanation:

hope this helps u

The term used to describe the quantity of matter that a body possesses is

Answers

The body mass index.

The term used to describe the quantity of matter that a body possesses is mass.

What is 54 km = _____ cm
Im working on physical science and I need help ):

Answers

1 km = 100,000 cm
54 km = 54 x 100,000 cm = 5,400,000 km

It is 5400000 cm long

two bullets have masses of 0.004 kg and 0.008 kg, respectively. Both are fired with a speed of 60.0 m/s. which bullet has more kinetic energy?

Answers

Answer:

eah

I don't believe in destiny

I just do what's best for me

Don't listen to my enemies

They're just full of jealousy

Duh

This legacy

You gon see what's left of me

You gon see success in me

You ain't seen the rest of me

I just wanna be the best at what I know

Better than the rest just watch me grow

Put me to the test and watch me go

This is my quest, I'ma make it known

They call me obsessive, oh I know

Call me selective with my notes

Call me agressive with my flow

Call me offensive even though

Explanation:

If mechanical energy is conserved in a system the energy at any point in time can be in the form of

Answers

The mechanical energy of the system at any point in time can be in the form of kinetic energy, potential energy, and elastic energy. These all are interconvertible, hence mechanical energy is conserved.

What is Mechanical Energy?

The term mechanical energy accounts for the total energy by the virtue of position as well as the motion of an object.

When an object is dropped from a certain height, then the mechanical energy of the object at any instant is given as the sum of kinetic energy and potential energy. The expression is given as,

ME = KE + PE

But at some point in time, the potential energy can be in the form of elastic energy as well. This energy is known as spring potential energy. Hence, the mechanical energy is conserved in a system at any point considering the forms like kinetic energy, potential energy, and elastic energy.

Thus, we can conclude that the mechanical energy of the system at any point in time can be in the form of kinetic energy, potential energy, and elastic energy. These all are interconvertible, hence mechanical energy is conserved.

Learn more about mechanical energy here:

brainly.com/question/12319302

potential, kinetic, elastc energies

What is the polarity of each of the earths magnetic poles ? Explain you answer

Answers

Answer:

When you put un-like poles together (South facing North) you can feel magnetic attraction. In the Northern Hemisphere, your compass needle points North, but if you think about it for a moment, you will discover that the magnetic pole in the Earth's Northern Hemisphere has to be a South polarity.

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If the voltage in a circuit is 24 V and the current is 2 A, what is the total power in the circuit?

In a clarinet, the reed end of the instrument acts as a node and the first open hole acts as an antinode. because the shape of the clarinet is nearly cylindrical, its harmonic series approximately follows that of a pipe closed at one end. What harmonic series is predominant in a clarinet?

If you have a vector which is 12 Newtons at 75 degrees south of west, what other vector is equivalent to this vector? a) 12 N at 15 degrees west of south b) 12 N at 15 degrees south of east c) 12 N at 15 degrees north of east d) 12 N at 15 degrees south of west

Sunlight is a form of energy called _____. electromagnetic energy nuclear energy hydro energy magnetic energy