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
allochka39001 [22]
3 years ago
5

The order of elements in the periodic table is based on a. the number of protons in the nucleus. c. the number of neutrons in th

e nucleus. b. the electric charge of the nucleus. d. atomic mass.
Physics
2 answers:
umka21 [38]3 years ago
7 0
A. the number of protons in the nucleus!!!!!
Lana71 [14]3 years ago
3 0
Its based on the atomic number which equals the number of protons in the atomic nucleus of each element so i would say your answer is D. Atomic mass. 
You might be interested in
Which of the following are possible causes of mass extinctions that scientists have identified
Alecsey [184]

Answer:

over harvesting, pollution, introduction of invasive species such as new predators and food competitors

Explanation:

The main cause of mass extinction is Humans cause extinction of a species through overharvesting. The second main  cause is pollution ., introduction of invasive species such as new predators and food competitors, habitat destruction, overhunting and other influences. Another very important cause of mass extinction is the unsustainable human population growth.

The five mass extinction events are

Ordovician Mass Extinction

Devonian Mass Extinction

 Permian Mass Extinction

Triassic -Jurassic Mass Extinction

and Cretaceous -Tertiary (or the K-T) Mass Extinction.

4 0
4 years ago
Male Rana catesbeiana bullfrogs are known for their loud mating call. The call is emitted not by the frog's mouth but by its ear
Sidana [21]

Answer:

The amplitude of the eardrum's oscillation is 6.65×10^-13 m.

Explanation:

Given data:

The sound has a frequency of 262 Hz

The sound level is 84 dB

The air density is 1.21 kg/m^3

The speed of sound is 346 m/s

Solution:

As, Intensity of sound is given by,

I = Io×10^(s/10 db)

I = 2×π^2×ρ×v×f^2×Sm^2

Thus,

Sm = √(Io×10^(s/10 db)) / √( 2×π^2×ρ×v×f^2)

Now, put the values,

Sm = √( 10^-12 × 10^(84/10) ) / √( 2×(3.14)^2×1.21×346×(262)^2 )

Sm = √(2.51×10^-4 / 5.66×10^8)

Sm = √0.443×10^-12

Sm = 6.65×10^-13 m.

8 0
3 years ago
Which type of material would be best to use for construction in an area prone to earthquakes? concrete brick wood stone
Alchen [17]

Answer:

Wood

Explanation:

Buildings made by brick or concrete have low ductility. And due to low ductility they absorb very less energy. This makes them not so good material for area prone to earthquakes. While Wood or steel reinforced concrete would be more suitable for area prone to earthquakes as they have increased ductility.

6 0
3 years ago
Read 2 more answers
The fall of a body on the earth's surface cannot be a complete free fall why ?​
leonid [27]

Explanation:

because the boy has larger surface area due to which he offers the larger air resistance which decreases the acceleration so, he will fall towards the earth's surface approximately with constant velocity.

3 0
3 years ago
Why do all of the parameters, except the independent variable, have to be controlled?
Maru [420]
The independent variable is changed by the experimentor, so it does not have to be changed.
4 0
3 years ago
Read 2 more answers
Other questions:
  • I need a creative science fair title about how music affects your run
    14·2 answers
  • A 2.0 kg block, initially moving at 10.0 m/s, slides 50.0 m across a sheet of ice beforecoming to rest. What is the magnitude of
    9·1 answer
  • As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arr
    15·1 answer
  • most responsible for the formation of a star is most responsible for the formation of a star is blank Force
    6·1 answer
  • A stationary police car emits a sound of frequency 1240 HzHz that bounces off of a car on the highway and returns with a frequen
    9·1 answer
  • List 3 things that magnetism and static electricity have in common
    11·1 answer
  • The following measurement has only 3 significant figures. Please explain why?<br> .000305
    13·1 answer
  • Did sans from Undertale really die or was he just trolling
    9·2 answers
  • An ion has 8 protons and 10 electrons. What is the total charge? *
    9·1 answer
  • what evidence would you expect to find on the moon if it had been subjected to plate tectonics? (select all that apply.)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!