The Hertzsprung- Russel diagram is used to how the relationship between the absolute magnitudes of stars and their effective temperatures.
Answer:
Explanation:
the momentum of a body is defined as the product of mass of body and the velocity f the body.
P = m x v
Where, m is the mass and v be the velocity of the body.
it is a vector quantity and its unit is newton second.
When the velocity of the object is zero, the momentum is also zero.
Newtons' first law states that the body is at rest or in motion , it remains at rest or in motion until and unless an external force is not applied on the body.
So, When a body is at rest it remains at rest.
B.f. skinner is the founder of operant conditioning .
Explanation:
A small piece of energy is called as Electron. It cannot be broken down further into smaller pieces. Photon is a basic unit of light. Photons always travel. They are in a continuous motion. So when electron needs energy, They absorb light. The light is absorbed or emitted in the form of photons. Each photon contains energy which is absorbed by the electron to gain its energy. After absorbing the photon, electron moves towards a higher energy level. So when an electron absorbs a photon, energy is gained by the electron.
Answer:
a. E = -13.8 kN/C
b. E = +8.51 kN/C
Explanation:
We will apply Gauss' Law to the regions where the electric field is asked.
Gauss' Law states that if you draw an imaginary surface enclosing a charge distribution, then the electric field through the imaginary surface is equal to the total charge enclosed by this surface divided by electric permittivity.
a. For this case, we will draw the imaginary surface between the inner and outer shell of the sphere. The total charge enclosed by this surface will be equal to the sum of the charge Q at the center and charge of the shell within the volume from R1 and r.
Here, r = 0.5(R1+R2) = 12 cm.
b. For this case, we will draw the imaginary surface on the outside of the shell.
The total charge enclosed by this surface will be equal to the sum of the charge at the center and the total charge of the shell.
![Q_{\rm enc} = Q + \rho V = Q + (Ar)[\frac{4}{3}\pi (R_2^3 - R_1^3)]\\Q_{\rm enc} = (-35\times 10^{-9}) + [(16\times 10^{-6})(38\times 10^{-2})][\frac{4}{3}\pi((19\times 10^{-2})^3 - (5\times 10^{-2})^3)]\\Q_{\rm enc} = 1.36\times 10^{-7}~C](https://tex.z-dn.net/?f=Q_%7B%5Crm%20enc%7D%20%3D%20Q%20%2B%20%5Crho%20V%20%3D%20Q%20%2B%20%28Ar%29%5B%5Cfrac%7B4%7D%7B3%7D%5Cpi%20%28R_2%5E3%20-%20R_1%5E3%29%5D%5C%5CQ_%7B%5Crm%20enc%7D%20%3D%20%28-35%5Ctimes%2010%5E%7B-9%7D%29%20%2B%20%5B%2816%5Ctimes%2010%5E%7B-6%7D%29%2838%5Ctimes%2010%5E%7B-2%7D%29%5D%5B%5Cfrac%7B4%7D%7B3%7D%5Cpi%28%2819%5Ctimes%2010%5E%7B-2%7D%29%5E3%20-%20%285%5Ctimes%2010%5E%7B-2%7D%29%5E3%29%5D%5C%5CQ_%7B%5Crm%20enc%7D%20%3D%201.36%5Ctimes%2010%5E%7B-7%7D~C)
