Answer:
The value is 
Explanation:
From the question we are told that
The wavelength is 
The velocity is 
The mass of electron is 
Generally the energy of the incident light is mathematically represented as
Here c is the speed of light with value 
h is the Planck constant with value 
So
=> 
Generally the kinetic energy is mathematically represented as
=> 
=> 
Generally the ionization energy is mathematically represented as
=>
The first two choices are both false, but the <em>second one</em> is the falser one.
All electricity sources do <em>not</em> have the same voltage. The outlet in your bedroom wall supplies 120 volts, but the USB port on your laptop only supplies 5 volts, and the battery in your cellphone only supplies 3.7 volts.
Answer:
|q1| / |q2| = 1/7
Explanation:
We are told that both particles are in the same magnetic field, B.
The charge of the first particle is q1
The charge of the second particle is q2
Let the speed of particle 1 be v1.
Let the speed of particle 2 be v2.
The magnetic force acting on particle 1 due to the magnetic field, B, is:
F1 = |q1| * v1 * B
The magnetic force acting on particle 2 due to the magnetic field, B, is:
F2 = |q2| * v2 * B
We are told that both particles experience the same magnetic force. This means that F1 = F2
Therefore:
|q1| * v1 * B = |q2| * v2 * B
=> |q1| * v1 = |q2| * v2
|q1| / |q2| = v2/v1
We are told that the speed of particle 1 is seven times that of particle 2. Hence:
v1 = 7 * v2
Hence:
|q1| / |q2| = v2 / (7 * v2)
|q1| / |q2| = 1/7
