Answer:
(c) 6.91x10^14 Hz
Explanation:
Find the level energy of n=2 and n=5, using the formula:
where 
To jump from n=2 to n=5 the electron absorbs a photon with energy equal to 
, using the next formula to find specific wavelength 
to that energy
Where 
is the speed of light (
) and 
is Planck's constant (
). Solve for :
The frequency of this wavelength is calculated with this formula:
Answer:
Es una constante porque sigue funcionando y debido a la gravedad, tú tendrías que ser tú quien la detenga si está bajando en lugar de hacia arriba.
Explanation:
Answer:
The answer to your question is at the point where it is thrown.
Explanation:
Kinetic energy is the energy that possesses a body due to its motion. Its formula is
Ke = 1/2 mv²
Then, the kinetic energy is maximum when the velocity is the highest, and this is at the point where it is thrown, after this point, the velocity will be diminished and at the highest point will be equal to zero.
Answer:
a = 1.1 m/s^2
Explanation:
let a be the acceleration of the astronaut, M be the mass of the earth and r be the radius of the earth.
from the information provide:
the distance r is the radius of the earth.
the distance ,d, the astronaut is from the surface of the earth and the only force acting on the astronaut is gravity, the astronaut accelerates with due to gravity only that is d = 3×r because we consider the earth center as the center of mass and gravity attracts object towards the center of mass.
then, we know that:
a = GM/d^2
= (6.67×10^-11)(5.972×10^24)/[(3×6371×10^3)^2]
= 1.1 m/s^2
Therefore, the Astronaut will be accelerating with an acceleration of 1.1 m/s^2 towards the earth.
