Chemical change is two things get chemical reaction and produce a new product.
Answer:a) λ = 4.862 10⁻⁷ m, b) λ = 4.341 10⁻⁷ m
Explanation:
The spectrum of hydrogen can be described by the expression
in the case of the initial state n = 2 this series is the Balmer series
a) Find the wavelength for n = 4
let's calculate
= 1,097 10⁷ ()
\frac{1}{ \lambda} = 1.097 10⁷ 0.1875 = 0.2056 10⁷
λ = 4.862 10⁻⁷ m
b) n = 5
\frac{1}{ \lambda} = 1,097 10⁷ ()
\frac{1}{ \lambda} = 1.097 10⁷ 0.21 = 0.23037 10⁷
λ = 4.341 10⁻⁷ m
Answer:
Water leaves the holes with a speed of 2.65 m/sec
Explanation:
It is given internal diameter of garden hose = 2.9 cm
So internal radius 
Number of holes n = 24
Diameter of holes d = 0.36 cm
So radius of holes 
Velocity of water in hose 
According to continuity equation
Therefore water leaves the holes with a speed of 2.65 m/sec
Answer:
<em>199,430Joules</em>
Explanation:
Gravitational potential energy is the energy possessed by a falling object due to virtue of its position.
gravitational potential energy = mass * acceleration due to gravity * height
gravitational potential energy = 55 * 9.8 * 370
gravitational potential energy = 539 * 370
gravitational potential energy = 199,430
<em>Hence the total change in the skier's gravitational potential energy is 199,430Joules</em>
