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3 years ago

What is atom and what are its particles

Physics

2 answers:

beks73 [17]3 years ago

6 0

Answer:

An atom is a smallest particle of an element.

Explanation:

It's particles are proton , electron and neutron.

MissTica3 years ago

3 0

Atoms are the building blocks of all matter and the smallest part of a chemical element. All matter, from our bodies and the air we breathe, the Eiffiel Tower, books,

Atoms are mostly empty space. At its center, there is a nucleus which is where the majority of its mass is located. Tiny particles called protons and neutrons make up the nucleus. Protons have a positive electric charge while neutrons don't have any charge. Electrons circle around the nucleus just like all the planets in our solar system orbit orbit around the brightest star in the sky, the sun.

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Help please i really want to pass this quiz

Lesechka [4]

Answer:

It is positive and smaller in magnitude than the initial acceleration.

Explanation:

We know that acceleration is defined as the change of velocity in a given time.

We see that the time interval is equal to 30 seconds (70 - 40). In this interval we also see that the velocity increases from 245 to 250 (m/s) approximately. Therefore the acceleration is positive.

With respect to the magnitude we can say that it is smaller than at the beginning since the change of velocities is smaller with respect to the change of velocities at the beginning.

5 0

2 years ago

According to our theory of solar system formation, why do we find some exceptions to the general rules and patterns of the plane

Ksivusya [100]

Our understanding of the universe hasn’t fully evolved yet and so most of the exceptions are the result of giant impacts or close gravitational encounters. In the solar system, almost anything is possible, we just haven’t discovered it yet.
Hope this helps!
Please give Brainliest!

7 0

2 years ago

Johannes Kepler, an apprentice of Brahe, believed in the heliocentric universe but rejected past astronomers' belief in

Rashid [163]

<span>So the question is in what did johannes Kepler reject since he believed in the heliocentric universe. So heliocentric system is a system where the sun is in the center of the Solar system. Geocentric system is the system where Earth, not Sun is in the center of our system. He was against Geocentric system. </span>

5 0

3 years ago

Read 2 more answers

How many seasons are there in a year

Elena-2011 [213]

Answer:

There are 4

Explanation:

4 0

2 years ago

Read 2 more answers

An ultrasound unit is being used to measure a patient's heartbeat by combining the emitted 2.0 MHz signal with the sound waves r

alexandr402 [8]

Hi there,
for this question we have:
Signal 2.0 MHz = Emitted so we can call it $f_e$
and we need the Reflected = $f_{r}$
In this question, we have a source which goes to the heart and a reflected which comes back from the heart and we need the speed of the reflected.
So you should know that the speed of reflected is lower than the source(Emitted).
we also know: ΔBeat frequency(max) = 560 Hz = $f_{b}$
so we have:
$f_{e}$ - $f_{r}$ = $f_{b}$
so frequency of Reflected is:
2.0 × 10^6 Hz - 560 Hz = 1.99 × 10^6 Hz = $f_{r}$
now you know that Lambda = v/f
so if we find the lambda with our Emitted then we can find v with the Reflected:
Lambda = 1540(m/s) / 2.0 × 10^6 Hz = 7.7 × 10^-4 m
=> $v_{max}$ = (lambda)( $f_{r}$
=> 7.7 × 10^-4m (1.99 × 10^6Hz) = 1532 m/s
so the $v_{max}$ is equal to 1532 m/s :)))
This question is solved by two top teachers as fast as they could :))
I hope this is helpful
have a nice day

8 0

3 years ago