Answer:
option A
Explanation:
given,
frequency is increased by 20%
we know,
...........(1)
where
x_n is the perpendicular distance between the point the interference pattern is obtained,
L is the distance between the center of the two point sources
and λ is the wavelength of light.
If the frequency is increased by 20%, then the number of nodal lines is increased by 20%.
From equation (1),we observe that the frequency is directly proportional to the number of nodal lines.
Hence, the correct answer is option A
(a) 24.6 Nm
The torque produced by the net thrust about the center of the circle is given by:
where
F is the magnitude of the thrust
r is the radius of the wire
Here we have
F = 0.795 N
r = 30.9 m
Therefore, the torque produced is
(b) 
The equivalent of Newton's second law for a rotational motion is
where
is the torque
I is the moment of inertia
is the angular acceleration
If we consider the airplane as a point mass with mass m = 0.741 kg, then its moment of inertia is
And so we can solve the previous equation to find the angular acceleration:
(c) 
The linear acceleration (tangential acceleration) in a rotational motion is given by
where in this problem we have
is the angular acceleration
r = 30.9 m is the radius
Substituting the values, we find
Given the particle's acceleration is
with initial velocity
and starting at the origin, so that
you can compute the velocity and position functions by applying the fundamental theorem of calculus:
We have
• velocity at time <em>t</em> :
• position at time <em>t</em> :
Answer:
The acceleration of the plane is 35.6 meters per square second.
Explanation:
By Newton's Laws of Motion, we know that force (
), in newtons, is directly proportional to acceleration (
), in meters per square second. That is:
If four engines are running simultaneously and each produce the same force, then we find that acceleration of the plane is:
The acceleration of the plane is 35.6 meters per square second.
