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
adelina 88 [10]
2 years ago
9

a student in your class says "electromagnetic waves can travel through outer space but mechanical waves can’t.” is it this stude

nt right or wrong? why?
Physics
1 answer:
Kitty [74]2 years ago
7 0

Answer:

Right

Explanation:

electromagnetic waves can travel through space (a vacuum) because it doesn't need a medium and its particles to propagate whereas a mechanical wave needs a medium to propagate. For example sound is a mechanical wave, sound vibrates off a mediums particles to propagate and for sound to be heard and travel

You might be interested in
A type of Lead (Pb) ion has a + 4 oxidation number. Sulfur (S) has a — 2 oxidation number. What would be the chemical formula fo
serious [3.7K]

Answer: The chemical formula for the compound of these two elements is PbS_2

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

Here metal lead is having an oxidation state of +4 called as Pb^{4+} cation and sulphur non metal has oxidation state of -2 called as S^{2-}. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral PbS_2

The chemical formula for the compound of these two elements is PbS_2

4 0
3 years ago
Which ionic compound is used as a building material?
Maurinko [17]
Magnesium oxide is an ionic compound that can be used as a building material. MO2 is actually a raw material that used in producing cement for building houses, buildings, and other constructions.
Many old structures were made of limestones. Limestone is from Calcium Carbonate (CaCO3) which is an ionic compound and can be used as a building material too.
8 0
3 years ago
Read 2 more answers
Which model best represents a pattern?
balandron [24]
The water cycle because <span>the cycle of processes by which water circulates between the earth's oceans, atmosphere, and land, involving precipitation as rain.

it is like a pattern

hope that was helpful.</span>
3 0
3 years ago
Read 2 more answers
Place these waves in order from shortest wavelength to longest.
dsp73

Answer:

Ocean waves, sound waves, and light waves.

Explanation:

5 0
2 years ago
Read 2 more answers
What is an Atwood Machine?
Lady_Fox [76]
The best answer is letter (A) a double pulley system. Atwood Machine is normally used as a measurement in balancing to object to verify the mechanical law of motion with constant acceleration.
6 0
3 years ago
Other questions:
  • Gravity is greater when there is
    7·1 answer
  • Heat transfer within a fluid takes place by
    11·1 answer
  • Electric potential, unlike electric potential energy, is measured in units of _________.
    12·2 answers
  • What energy transformations take place in Joule's system?
    9·2 answers
  • Which diagram is the best representation of gas molecules in a closed container? A. Diagram A B. Diagram B C. Diagram C D. Diagr
    11·1 answer
  • How many joules of heat must be transferred to a 410-g aluminum pizza pan to raise its temperature from 32oC to 232oC? The speci
    13·1 answer
  • 2.
    10·1 answer
  • Physicists at CERN study the conditions present during the big bang by using machines to do what?
    9·1 answer
  • Plz help me with this question ​
    12·1 answer
  • A car has a speed of 10 m/s and a mass of 1500 kg. what is the momentum of the car ​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!