In atoms, electrons surround the nucleus in specific energy levels.
Answer: Option B
<u>Explanation:
</u>
Atom, actually considered as the tiny part that is ever present in this universe. Many theories and experiments were conducted, for studying what was present inside of an atom, and many theories came into light.
And finally, Bohr-Sommerfeld Theory stated the final conclusion, that the positive charge is at the centre of the nucleus, and all the electrons revolve in their specific energy levels. If an atom wants to move to lower energy state, it should emit energy, whereas for going to higher state, it should gain energy.
Answer:
The answer is 312.5j
Explanation:
The kinetic energy (KE):
KE=1/2*m*v^2
M= mass of the object
v= velocity of the object
We have;
m=25g
v=5m/s
KE=1/2*25g*5^2m/s
KE =312.5j
Answer:
λ = 1.2 x 10⁻⁶ m
Explanation:
Given that,
slit separation, d = 0.050 mm
= 5 x 10⁻⁵ m
Distance between the fringes, D = 5.00 m
distance between the fringes, x = 12.0 cm
= 0.12 m
wavelength of the light = ?
the separation between the fringe is given by
![x = \dfrac{n\lambda\ D}{d}\\\\\lambda = \dfrac{x d}{n\ D}\\](https://tex.z-dn.net/?f=x%20%3D%20%5Cdfrac%7Bn%5Clambda%5C%20D%7D%7Bd%7D%5C%5C%5C%5C%5Clambda%20%3D%20%5Cdfrac%7Bx%20d%7D%7Bn%5C%20D%7D%5C%5C)
where as n = 1
![\lambda = \dfrac{0.05\times 10^-^3\times 0.12}{1\times 5.00}](https://tex.z-dn.net/?f=%5Clambda%20%3D%20%5Cdfrac%7B0.05%5Ctimes%2010%5E-%5E3%5Ctimes%200.12%7D%7B1%5Ctimes%205.00%7D)
λ = 1.2 x 10⁻⁶ m
Answer:
Average speed = 26.67 km/h
Explanation:
It is given that,
The first half of the journey by a body is traveled with a speed of 40 km/h and the next half is covered with a speed of 20 km/h
We need to find the average speed of the whole journey. When two speeds are given, the average speed is given by :
![v=\dfrac{2v_1v_2}{v_1+v_2}\\\\v=\dfrac{2\times 40\times 20}{40+20}\\\\v=26.67\ km/h](https://tex.z-dn.net/?f=v%3D%5Cdfrac%7B2v_1v_2%7D%7Bv_1%2Bv_2%7D%5C%5C%5C%5Cv%3D%5Cdfrac%7B2%5Ctimes%2040%5Ctimes%2020%7D%7B40%2B20%7D%5C%5C%5C%5Cv%3D26.67%5C%20km%2Fh)
So, the average speed of the body of the whole journey is 26.67 km/h.
Answer:
100N
Explanation:
if Jane pushes on the rock with 100 Newtons of force, then the rock pushes on Jane with 100 Newtons of force.
hope this helps :)