Answer:
Max kinetic energy for 340 nm wavelength will be 
Explanation:
In first case wavelength of electromagnetic radiation 
Plank's constant 
Maximum kinetic energy = 0.54 eV
Energy is given by 
We know that energy is given
, here
is work function
So 

Now wavelength of second radiation = 340 nm
So energy 
So 
Answer:
4.454 N.
Explanation:
The force on a current carrying conductor in a magnetic field is given as,
F = BILsinФ................... Equation 1
Where F = magnetic Force, B = magnetic Field, I = current, L = Length of the wire, Ф = The angle between the conductor and the Field.
Given: B = 0.289 T, I = 6.91 A, L = 6.7 m, Ф = 19°
Substitute into equation 1
F = 0.289(6.91)(6.7)sin19
F = 0.289×6.91×6.7×0.33
F = 4.454 N.
Hence the magnetic force = 4.454 N.
Answer:
acceleration = 22.14 m/s²
time = 2.80 s
Explanation:
given data
initial velocity = 31.0
final velocity =
time = 1.40
solution
we get here acceleration that is
acceleration =
...............1
acceleration =
acceleration = 22.14 m/s²
and
by kinematic equation of motion
v = u +at .........2
t =
time = 2.80 s