Answer:
I think the answer is 18 km/h
Explanation:
Answer:
159HZ A
Explanation:
frequency= speed/wavelength
frequency= 342/2.15=159HZ
Answer:
The kinetic energy of an electron is 
Explanation:
Given that,
Distance = 0.1 nm
We need to calculate the momentum
Using uncertainty principle


Where,
= change in momentum
= change in position
Put the value into the formula


We need to calculate the kinetic energy for an electron

Where, P = momentum
m = mass of electron
Put the value into the formula


Hence, The kinetic energy of an electron is 
Atoms are Neutral in charge because they have the same number of protons.