1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natasha_Volkova [10]
3 years ago
12

A. What is the basic building block of matter?

Physics
2 answers:
Makovka662 [10]3 years ago
5 0

a) Everything's made of atoms! Despite the fact that they still can be split to nucleons and quarks...

b) From lightest to the heaviest: electrons (charge -1), protons (+1), neutrons (0 charge).

c) Atoms are electrically neutral and ions doesn't

d) Negative ion has more negative charges - electrons, so they are in majority.

e) In Thomson's model of atom charges were uniformly spread in the atom's volume. He thought that this model is enough to describe atoms' neutrality.

Nikitich [7]3 years ago
4 0

Answer:

a. atoms are the basic building blocks of matter. The atom is made of electrons and protons. It contains the chemical identity of an element.

b. Three types of particles that make up an atom are:

electrons - these are negatively charged particles and lightest constituents of an atom.

protons are positively charges and is 1873 times heavier than an electron.

Neutrons are neutral particles having mass equivalent to mass of proton.

Protons and neutrons exist in the center of an atom in nucleus and electrons revolve around the nucleus.

c. An atom is a neutral entity where as an ion is charged. An ion has excess of electrons or lacks electrons due to which it has negative or positive charge. An atom has an equal number of electrons and protons.

d. In a negative ion, the number electrons is greater than number of protons. The atom when gains electrons becomes negative ion.

e. John Dalton proposed Solid sphere model in which tiny invisible particles constitute matter. These invisible particles are atoms and these are indivisible.

You might be interested in
Why do herbivores of the Serengeti migrate year after year
galina1969 [7]

Answer:

The main reason is that very young calves are more noticeable to predators when mixed with older calves from the previous year

Explanation:

5 0
3 years ago
Read 2 more answers
Mrs. Miller is acting a little strange and is pushing as hard as she can against a wall. Using Newton's Laws, what could be say
deff fn [24]
Newton’s 3rd Law of Motion
8 0
2 years ago
Read 2 more answers
A skateboarder has an acceleration of −1.9 m/s2. If her initial speed is 6 m/s, how long does it take her to stop?
SSSSS [86.1K]
You said that she's losing 1.9 m/s of her speed every second.

So it'll take

             (6 m/s) / (1.9 m/s²)  =  3.158 seconds  (rounded)

to lose all of her initial speed, and stop.
6 0
3 years ago
A space station, in the form of a wheel 140 m in diameter, rotates to provide an "artificial gravity" of 3.90 m/s2 for persons w
Zigmanuir [339]
Radial acceleration is given by

a_{rad}= \frac{v^2}{r}
where 

v=r \omega
then

a_{rad}= \frac{r^2 \omega^2}{r}=r\omega^2

Now

70\omega^2=3.90 \frac{m}{s^2}  \\  \\ \omega= \sqrt{ \frac{3.9}{70} }

Using the relation

\omega=2 \pi f

2 \pi f= \sqrt{ \frac{3.9}{70} }\\  \\ f= \frac{1}{2 \pi}\sqrt{ \frac{3.9}{70} }Hz

Putting into rpm

\frac{60}{2 \pi}\sqrt{ \frac{3.9}{70}} =2.254rpm

8 0
3 years ago
3. Imagine a 10kg block moving with a speed of 20m/s<br> calculate the kinetic energy of this block
MatroZZZ [7]
The formula of the kinetic energy is:
E_{k}  =  \frac{m v^{2} }{2}
where m is a mass of the object, v is speed of the object at the moment of time. So we have:
E_{k}  =  \frac{10* 20^{2} }{2}  = 2000J
The answer is 2000 Joules.
6 0
3 years ago
Other questions:
  • The diagram shows a trace of a wave on a cathode-ray oscilloscope.
    14·1 answer
  • What is the speed of a wave with a frequency of 0.2 Hz and a wavelength of 100 meters?
    13·2 answers
  • A car traveling in a straight line has a velocity of +4.4 m/s. after an acceleration of 0.65 m/s2 , the car's velocity is +8.3 m
    12·1 answer
  • A certain car can accelerate from rest to 70km/h in 7 seconds.Find the cars average acceleration
    8·2 answers
  • Gold has a specific heat of 0.130 J/g*C. If 195 joules of heat are added to 15 grams of gold how much does the temperature of th
    7·1 answer
  • um can someone please help me I'm really stuck on this question and an explanation would be nice thank you
    9·1 answer
  • What is a magnetic flux thru closed surface
    6·1 answer
  • The breakdown of rocks by chemical action of air and water is called
    5·2 answers
  • NO LINKS! What are the definitions of initial horizontal velocity and initial vertical velocity? Please help! This like is my 20
    10·1 answer
  • List three examples of real science that you find on the internet or in real life
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!