Complete Question
The complete question is shown on the first and second uploaded image
Answer:
The power created is 
Explanation:
From the question we are told that
The that the average power is mathematically represented as

Where W is is the Workdone which is mathematically represented as

Where F is the applies force and s is the displacement due to the force
So

Now this displacement can be represented mathematically as

Where
is the average velocity and
is the time taken
So

=> 
De broglie wavelength,
, where h is the Planck's constant, m is the mass and v is the velocity.

Mass of hydrogen atom, 
v = 440 m/s
Substituting
Wavelength 

So the de broglie wavelength (in picometers) of a hydrogen atom traveling at 440 m/s is 902 pm
Answer:
Explanation:
Given
mas of block 
speed of block 
spring constant 
As the mass collides with the spring its kinetic energy is converted to the Elastic Potential energy of the spring




Answer: TENSION and WEIGHT
Explanation:
Force experienced by the spring is called TENSION while the WEIGHT is the gravitational pull on the body towards the earth surface. Therefore the forces acting on the cart are TENSION and WEIGHT(weight acts downwards (along negative y-axis) while the TENSION upward(along positive y-axis).