Answer:
The spring was compressed the following amount:
Explanation:
Use conservation of energy between initial and final state, considering that the surface id frictionless, and there is no loss in thermal energy due to friction. the total initial energy is the potential energy of the compressed spring (by an amount 
), and the total final energy is the addition of the kinetic energies of both masses:
Answer:
a) 
b) 
Explanation:
The energy of the photon (E) for 
orbit of the hydrogen atom is given as:
where,
= 13.6 eV
n = orbit
a) Now for the transition from n = 4 to n = 5
b) Now for the transition from n = 5 to n = 6
i don't know sorry
free to comment if you know the answer
Answer:
433903.8 N
Explanation:
From work energy theorem, the total work done is equivalent to change in kinetic energy. Kinetic energy is depedant on speed and since pile drive finally comes to rest, then final velocity is zero. Also, its initial velocity is not given. Therefore, the sum of work due to gravity and beam equals to zero. Work due to gravity is product of mass of pile driver, acceleration due to gravity and height while work due to beam is a product of force and distance. Substituting the given values then
2300*9.81*3+(F*0.156)=0
F=-433903.84615384615384615384615384615384615 N
Approximately, the magnitude of force is 433903.8 N and it acts upwards
<u>Answer:</u>
Magnitude = 6.64
Direction = 
from horizontal.
<u>Explanation:</u>
We have horizontal component of vector Ax = 5.7 and vertical component of vector Ay = 3.4.
Magnitude of vector acting perpendicularly = 
Substituting
Direction θ = 
Substituting
θ =
