Answer:
1.38 x 10^-18 J
Explanation:
q = - 1.6 x 10^-19 C
d = 5 x 10^-10 m
the potential energy of the system gives the value of work done
The formula for the potential energy is given by
So, the total potential energy of teh system is
As all the charges are same and the distance between the two charges is same so the total potential energy becomes
K = 9 x 10^9 Nm^2/C^2
By substituting the values
U = 1.38 x 10^-18 J
Answer:
19320 K
Explanation:
The temperature of a star is related to its peak wavelength by Wien's displacement law:
where
T is the absolute temperature at the star's surface
is Wien's displacement constant
is the peak wavelength
Here we have
Substituting into the equation, we find
Answer:
300 K
37.5 K
Explanation:
= Boltzmann constant =
T = Absolute temperature
= Mass of Helium atom = 4 u
= Mass of Oxygen atom = 32 u
The kinetic energy of a gas is given by
So, the temperature would be 300 K
RMS velocity is given by
The gas temperature is 37.5 K