Answer:
(a). The first wavelength is 401.0 nm.
(b). The metal's work function is 2.55 eV.
Explanation:
Given that,
Maximum kinetic energy = 0.65 eV
Second wavelength
(a). We need to calculate the wavelength
Using equation of work function for first wavelength
.....(I)
For second wavelength,
Put the value of second wavelength
....(II)
By subtraction equation (I) from (II)
(b). We need to calculate the work function
Using formula of work function
Put the value into the formula
Hence, (a). The first wavelength is 401.0 nm.
(b). The metal's work function is 2.55 eV.
Answer:
Explanation:
Given:
Length of the parallel wires (L) = 3.7 m
Current in the first wire (I₁) = 3.6 A
Current in the second wire (I₂) = 1.6 A
Separation between the parallel wires (d) = 3.1 cm = 0.031 m [1 cm = 0.01 m]
Both the wires will attract each with forces equal in magnitude and opposite in direction.
Now, the magnitude of the force acting between the two wires is given as:
Where,
Plug in the given values and solve for |F|. This gives,
Therefore, the magnitude of the force between the two wires is
Answer:
162500000.
Explanation:
Given that
Diameter of the wire , d= 1.8 mm
The length of the wire ,L = 15 cm
Current ,I = 260 m A
The charge on the electron ,e= 1.6 x 10⁻¹⁹ C
We know that Current I is given as
I=Current
q=Charge
t=time
q= I t
q= 260 m t
The total number of electron = n
q= n e
n=162500000 t
The number of electron passe per second will be 162500000.
The numbers refer to the mass of each carbon atom.
Since the atoms are all Carbon, the number of protons in each atom is always the same ... if the number of protons changed, then you'd have an atom of something else, not Carbon. The only way the atomic mass can change and still be an atom of the same element is by adding or removing NEUTRONS.
Carbon-14 has two more neutrons in the nucleus of its atoms than Carbon-12 has.
Answer:
f the mass of an object increases, predict what will happen to the coefficient of sliding friction. The coefficient of sliding friction will increase. The coefficient of sliding friction will decrease.
Explanation: