Answer:
Part a)
Part b)
Explanation:
Part a)
Electric field due to large sheet is given as
now the electric field is given as
Now acceleration of an electron due to this electric field is given as
Now work done on the electron due to this electric field
So work done is given as
Part b)
Now we know that work done by all forces = change in kinetic energy of the electron
so we will have
Answer:
B. 2.77 x N
Explanation:
The required force can be calculated by:
F =
Where F is the force between the particles, K is the coulomb's constant (9 x
),
is the charge on the first particle,
is the charge on the second particle and
is the distance between the particles.
So that:
F =
=
= 2.7692 x
The force between the particles is 2.77 x N.
Answer:
F=507.7N
Explanation:
According to Newton's second law:
in this case, the football players need to drag the coach at a constant velocity, thus means with no acceleration, so:
there are 20 degrees between the two ropes that means each player exerts a force 10 degrees from the zero reference.
#1
For closed pipe the fundamental frequency will be given as
#2
For open pipe the wavelength for Nth harmonic will be given as
#3
for a closed pipe the frequency is given as
here for third harmonic n = 3
now plug in all values
#10
since in the given figure there are three complete loops
so in this case the <em>number of harmonics are THREE</em>