Answer:
Contact forces are forces that require the actual contact (touching) of two pieces of matter. There are a variety of contact forces. A very common one is friction. Anytime that two surfaces are in contact with one another, there is friction between the two surfaces. A field force is a force that works at a distance. No touching is required. Gravity is a good example of a field force, because it works whether or not an object is touching something or touching nothing at all.
To solve this problem we will apply the concept related to centripetal acceleration. Normal acceleration or centripetal acceleration is responsible for changing the direction of the velocity vector. It is the only type of acceleration present in the uniform circular motion. Its mathematical formula is given by
Here,
v = Tangential velocity
r = Radius
Our values are,
PART A) Using the previous expression the acceleration will be
PART B) In the case of g units, we know that
Then performing the conversion we have to
The correct answer is: Anti-nodes.
Explanation:
When the interference between the two waves is constructive and the <span>points on the wave that undergo the maximum displacement during each vibrational cycle </span><span>of the standing wave </span>back and forth. Those points are called anti-nodes. Hence, in the case of sound waves, interference creates standing waves, and the points on the medium that move up and down with the highest amplitudes are called anti-nodes.
Diffraction is the spreading of a wave from a gap.
The statements that are true about diffraction in the case above are;
<span>1. Both A and B will encounter waves. and
</span><span>6. Waves will reach A and B at the same time.</span>
The process is called neutralization.
Hope this helps!
