A
highlight
clear highlight
calculator
24. a blacksmith swings a 3.0-kg hammer at 1.5 m/s. he hits a 25.0-kg anvil and the hammer bounces up 0.08 m. the energy change for the hammer was

The change in energy is 1.023 J.

Explanation:

The formula for Kinetic Energy is

The formula for Potential Energy is

In the above question, the hammer has an initial Kinetic Energy which hits the anvil loses some energy and rises up to gain potential energy.

Initial Kinetic Energy=

                                 =3.375 J

Potential Energy it gains after rising the particular height= 3*9.8*0.08

                                                                                              =2.352 J

Therefore, the difference in energy is 1.023 J.

the electronic configuration of an atom with eight electrons is 1s²2s²2p⁴. the orbital diagrams are shown in the figure.

as per the hunds rule:

1. electrons tend to avoid being in the same orbital as per as practicable.

2. electrons in different orbitals of the same energy will have their spin parallel.

this can be illustrated from the multiplicity of the orbitals of the atom. as there are four electrons in the p orbital and p orbital has 3 sub-shells. the electrons can be fed in different ways as shown in the figure but the correct orbital diagram will be as per the hunds rule.

20 drops hope this