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.
A person suffering from hyponatremia has too little sodium in the bloodstream. This condition appears when their is more amount of water as compared to solute. it is commonly caused by diarrhea, heart failure and liver disease. Person suffering from this condition must reduce the intake of water.
So the correct choice is
a. Too little sodium in the bloodstream.
Answer:
the magnitude of the electron's acceleration a at that moment =
Explanation:
The expression for the magnetic field is :
where:
= permeability of free space =
I = current in the wire = 12.7 A
r = distance from the wire to the field point = 3.47 cm =
The magnetic force exerted in the electrond passing through the straight conducting wire is:
F = Bvgsinθ
where :
B = magnetic field =
v = speed of light = (30.5 % )
q = charge of electrons =
θ = angle between speed of electron & field = 90°
F = () × (30.5 % ) × () × ( sin 90°)
F =
From Newtons second Law ;
F = ma
where m = mass =
Thus, the magnitude of the electron's acceleration a at that moment =
Answer:
C1/C2 = 0.213 or C2/C1 = 4.68
Explanation:
Please refer to the attached image for step by step explanation.
B and c
because they aren't moving,
so when and if they do move
they will gain kinetic energy,
but for now they have potential
energy. hope I could help :))