Answer:
The correct response is:
1. KE Increases, PE Increases, ME Increases.
Explanation:
In this context, kinetic energy refers to the energy associated with an object's motion. Kinetic energy can be defined as the energy required to accelerate a mass from rest to a specified velocity, which it maintains once that speed is reached:
KE = 1/2 mv².
This definition indicates that KE is on the rise.
Potential energy is the energy stored in a body due to its position in a gravitational field:
PE = mgh,
which increases as the object is elevated against gravitational pull.
Since both kinetic and potential energies are increasing, it follows that the total mechanical energy (ME) is also rising:
ME = PE + KE.
Here is an image displaying the correct answers.
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The light's wavelength absorbed during the transition is 459 nm. Energy difference between the 5-d and the 6-s sub-levels in gold is expressed as ΔE. Let the wavelength associated with the electron's transition from the 5-d to the 6-s state be λ. The relationship that describes the connection between energy and wavelength is defined as: E = hc/λ, where E stands for photon energy, h represents Planck's constant, c is the speed of light, and λ denotes the wavelength of the photon. Therefore, the absorption wavelength in this transition stands at 459 nm.
Response:
Clarification:
Impulse is equal to change in momentum
mv - mu, where v and u represent the final and initial velocities during the surface impact
For the downward motion of the baseball
v² = u² + 2gh₁
= 2 x 9.8 x 2.25
v = 6.64 m / s
This becomes the initial velocity upon impact.
For the upward movement
v² = u² - 2gh₂
u² = 2 x 9.8 x 1.38
u = 5.2 m / s
This becomes the final velocity post-impact
change in momentum is
m ( final velocity - initial velocity )
.49 ( 5.2 - 6.64 )
=.7056 N.s.
Impulse exerted by the floor in the upward direction is
=.7056 N.s
