Which unit is used to measure mass in the metric system

Answers

Answer 1

Answer: kilogram or grammatical

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In 3.0 seconds, a wave generator produces 15 pulses that spread over a distance of 45 centimeters. Calculate its period.0.022 s

0.066 s

0.20 s

0.33 s

Answers

Period = (time) / (number of pulses)

= (3 sec) / (15 pulses)

= 0.2 sec/pulse

An object has a mass of 0.25 kg what is the gravitational force of on the object by the earth?

Answers

"Weight" = (mass) x (acceleration of gravity)

   = (0.25 kg) x (9.8 m/s²)

   = 2.45 newtons (about 8.8 ounces of force).

-- The Earth pulls on the object with 2.45 newtons of force.
    (The object weighs 2.45 newtons on Earth.)

-- The object pulls on the Earth with 2.45 newtons of force.
    (The Earth weighs 2.45 newtons on the object.)

Answer:

(0.25) * (10) = 2.5 Newtons

Explanation:

When a wave is acted upon by an external damping force what happens to the energy of the waveA-the energy of the wave decreases gradually
B-rhe energy of the wave increases gradually
C-there is no change in the energy of the wave
D-the propagation of the wave stops immediately

Answers

Answer:

A-the energy of the wave decreases gradually

Explanation:

when a wave is acted upon by an external damping force the energy of the wave decreases gradually.

The energy degrades into the form of heat which is considered to be of less value and use. The reason is because it disperses and spreads more widely.

So therefore it end up as heat with a little sound but that is close to none because that too disperses into heat i.e. decreased form of energy.

Answer:

Explanation:

PLATO

To find the number of neutrons in an atom, you would subtractA.) mass number from atomic number
B.) atomic number from mass number
C.) atomic number from electron number
D.) isotope number from atomic number

Answers

To find the number of neutrons in an atom, what we must do is to follow the following steps:

1) Find the element in the periodic table.

2) Find the atomic number of the element. The atomic number is the number of protons of a single atom of that element.

3) Find the atomic weight of the element.

4) Finally, we look for the number of neutrons. For this, we follow the following relationship:

Atomic weight - number of protons = number of neutrons.

Answer:

To find the number of neutrons in an atom, you would subtract:

B.) atomic number from mass number

Option B is the correct answer, because the number of neutron is equal to the difference between the mass number and atomic number.

Further explain:

Before going about the calculation of the number of neutron in an atom, firstly we will know something about an atom.

An atom is a fundamental unit of matter. It is composed of nucleus and electrons orbiting around the nucleus.

The electrons in an atom are orbiting around the nucleus in the shells of different energies.

Maximum part of the mass of an atom is concentrated in its nucleus and it is composed of proton and neutron. They are also known as nucleons of an atom.

Proton and electron are the charge particles. Proton carries the positive charge while electron carries the negative charge of same amount, but neutron does not carry any type of charge so it is neutral.

The total number of electron is equal to the total number of proton is an atom.

That’s why atoms are neutral in nature.

Atomic number: The total number of electron or total number of proton in an atom is known as the atomic number.

${A_n}=P$

Here, ${A_n}$ is the atomic number and $P$ is the number of proton.

Atomic mass: The sum of number of proton and neutron in an atom is known as atomic mass or mass number.

So, atomic mass can be calculated as,

$\boxed{M = P + N}$

Here, $M$ is the atomic mass or mass number and $N$ is the number of neutron .

So, number of neutron can be calculated as,

$\boxed{N = M - P}$

So, number of neutron is equal to the difference between the mass number and number of proton or atomic number.

Learn more:

1. Water is a compound: brainly.com/question/4636675.

2. Acceleration of the box against the friction: brainly.com/question/7031524.

3. Example of energy brainly.com/question/1062501.

Answer detail:

Grade: High school

Subject: Chemistry

Chapter: Atom

Keyword:

Number of neutron, mass number, proton, electron, atomic number, atom, nucleus, difference, atomic mass, subtraction, orbit, neutral.

True of false efficiency compared the output work to the output force

Answers

The statement about "efficiency compared the output work to the output force" is false. Efficiency can be compared from the input work to the output work.

The light you see around you from the Sun is called UVvisibleX-infrared rays.

Answers

The correct answer for the question that is being presented above is this one: "Ultraviolet rays." The light you see around you from the Sun is called ultraviolet rays. Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light.

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