Answer:

Explanation:
From the question we are told that:
1st Energy 
2nd Energy 
3rd Energy 
Generally the equation for Energy E for electron in one dimensional box at ground state
is mathematically given by


Therefore Length a is mathematically given as



Answer:
Isotopes are atoms of the same element with the same number of protons but different number of neutrons.
Hope this helps.
Answer:
force exerted on the ball
Explanation:
Answer:
m = 49.8 g
Explanation:
Hello there!
In this case, for this calorimetry processes we can define the involved heat in terms of mass, specific heat and temperature as shown below:

Thus, given the heat, final and initial temperature and specific heat of water (4.184), the mass of water can be computed as shown below:

Best regards!