The centripetal acceleration is 172 m /s^2.
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<u>Explanation:</u>
The acceleration that causes an object to move along a circular path, or turn is known as the centripetal acceleration. Centripetal acceleration points radially inward from the object's position and making a right angle with the object's velocity vector.
The centripetal acceleration is given as
Ac = v^2 / r
where Ac represents the centripetal acceleration of an object.
v represents the linear velocity
r represents the radius of rotation.
Given t = 0.64 s, r = 1.8 m.
To find linear velocity, v = (2 * pi * r) / t
= (2 * 3.14 * 1.8) / 0.64
v = 17.6 m / s.
Centripetal acceleration = v^2 / r
= (17.6 * 17.6) / 1.8
= 172 m / s^2.
Answer:
b) increase.
c) decrease.
d) Fringe is said to be a missing fringe when interference maxima overlap with diffraction minima.
Explanation:
a ) Young's interference is the interference phenomenon related to the light waves. Interference is the superposition of light waves . It proved the wave nature of light . Interference can be either constructive or destructive.
b) If the distance between the two slits increases, the number of fringes also increases. d sinθ = m λ. Here d is the slit width and m is the order of fringes. It shows that as d increases, m also increases.
c) Similarly, as d decreases , number of fringes decrease.
d) Fringe is said to be a missing fringe when interference maxima overlap with diffraction minima.
First, we need to calculate for the height where the mailbag
was dropped.
h = 3.50 * t^3
at t = 1.75 s, h is:
h = 3.50 * (1.75)^3
h = 18.758 m
Then we can use the equation to solve for time:
h = v0t + 0.5gt^2
where v0 is initial velocity = 0, t = time, g =
acceleration due to gravity
18.758 m = 0 + 0.5 * (9.81 m/s^2) * t^2
t^2 = 3.8242
t = 1.96 s
<span>So the mailbag reaches the ground after 1.96 seconds</span>
Answer: Hand-eye coordination
Explanation :
The hindbrain is the part of the human brain. It includes medulla, pons and cerebellum.
Cerebellum helps in coordination, precision and accurate timing. It gains information from sense organs and other part of the brain and passes them to motor nerves. It coordinates our voluntary movements.
Hand-eye coordination is controlled by the cerebellum. It is the coordinated control of the movement of eye with hand movement. Since it is a voluntary action, so it is controlled by the cerebellum.
Well.. it is just the next layer in after the cell wall. I have included a diagram.