The given question is incomplete as the options are not provided. The correct options for this questions are as follows-
(1) Good heat conductivity
(2) Good electrical conductivity
(3) Low melting point
(4) High melting point
Thus, the question now is solved below as:
Answer:
Option (3)
Explanation:
Molecular substances are simply defined as those substances that are comprised of more than two atoms and are interlinked with one another. These atoms are linked with each other by the weaker intermolecular forces. This weak bond reflects the low and high melting point of the substance.
These molecular substances differ from the molecular compounds because, in the case of molecular compounds, the atoms are linked with one another by a strong covalent bond.
Thus, the correct answer is option (3).
2kg ball
A=f/m
Higher mass is less acceleration
here we can use energy conservation
like initial kinetic + potential energy is always conserved and it will be same at all points
so we can say
now we can plug in all the given values in it
now divide whole equation by mass "m"
so final speed will be 65.96 m/s
Answer:
Gravity, Friction, Air resistance, magnetism, static electricity
Explanation:
Explanation:
The Doppler effect states that "there is an decrease in frequency of sound, light and other forms of waves as the separation between the source and observer increases".
This leads to low pitch of sound being heard as source of sound moves away.
The Doppler effect also suggests that as a source approaches an observer, there is an increase in frequency of waves.
- This is why the sound heard by a siren fades away as a police vehicle moves away.
- Also, the intensity of light fades when we move away from it.
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Frequency brainly.com/question/5354733
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