Solids have very small intermolecular space and when heated, do not expand as per the container volume. Basically, their expansion is not good.
Liquids, on the other hand, have a definite volume and their expansion is ideal. Also, they fill the container only to the desired level, unlike gases.
The power of the sound wave per unit area is what would best define sound intensity
Answer:
kinectic energy-in physics kinetic energy of an object is the energy that it possesses due to its motion
- it is defined as the work needed to accelerate a body of a given mass from rest to its started velocity.having
- gained this energy during its acceleration
- The body maintains this kinetic energy unless its speed changes.
potential energy-in physics potential energy is the energy held by an object because of its position relative to other objects,its electric charge,or other factors
- in the case of a bow and arrow ,when archer does work on the bow drawing the string back
- some if the chemical energy of the archer's body is transformed into elastic potential energy in the bent limb of bow
Answer:
The gravitational force is 3.509*10^17 times larger than the electrostatic force.
Explanation:
The Newton's law of universal gravitation and Coulombs law are:
Where:
G= 6.674×10^−11 N · (m/kg)2
k = 8.987×10^9 N·m2/C2
We can obtain the ratio of these forces dividing them:
--- (1)
The mass of the moon is 7.347 × 10^22 kilograms
The mass of the earth is 5.972 × 10^24 kg
And q1=q2=Na*e=(6.022*10^23)*(1.6*10^-19)C=9.635*10^4 C
Replacing these values in eq1:
Therefore
This means that the gravitational force is 3.509*10^17 times larger than the electrostatic force, when comparing the earth-moon gravitational field vs 1mol electrons - 1mol protons electrostatic field
Answer:
Therefore the velocity of the proton is m/s towards east.
Explanation:
The mass of proton is m= kg.
q= C is the magnitude of the charge of a proton.
The earth's magnetic field is B= T toward north.
Let v be the velocity of the proton towards east.
The angle between the velocity of proton towards east and magnetic field towards north is .
We know that,
Now putting the all values
m/s
Therefore the velocity of the proton is m/s towards east.