Answer:
0.544 eV
Explanation:
To ionize the hydrogen atom 
So the required energy is
as
So 
We have to calculate the energy required to ionize hydrogen atom when it is in n=5
So the energy should be less than 
<u>Answer:</u>
Mass in kg = 39.88
Mass in pounds = 87.92
<u>Explanation:</u>
We have the expression for Density, ρ = Mass / Volume, in this case density is given and we need to find mass and volume.
Volume of a sphere, we have the expression
, where r is the radius of sphere.
Radius of sphere, r = Half of diameter = 15/2 = 7.5 cm
So 
Mass = Volume * Density = 1767.15*22.57 = 39884.49 g
Mass in kg = 39884.49/1000 = 39.88 kg
Mass in pounds = 39.88*2.205 = 87.92 lb
Explanation:
Given:
v₀ = 15 m/s
a = 3.5 m/s²
t = 5.0 s
Find: v
v = at + v₀
v = (3.5 m/s²) (5.0 s) + 15 m/s
v = 32.5 m/s
D.4
hope it helps have a great day!