As per the question the length of the string is given as 2 metre.
A ball is attached to the string.
The ball is taken above the head and the ball starts swinging.
Swinging motion of a body may be oscillatory or circular. Here the motion is circular.
Here the length of the string will be considered as the radius of the circular path. we are asked to calculate the distance traveled by the ball in each circular rotation.
As the motion is circular, the path covered by the ball in each rotation will be equal to the circumference of the circle.
The circumference of the circle is given as
where C is the circumference.
hence C=2×3.14×2 metre
=.12.56 metre.
Hence distance covered by the ball in each circular rotation is 12.56 metre.
Here the displacement is zero. one should not be confused between distance and displacement.
Answer:
False
In a phase contrast microscope, the phase plate causes diffracted light waves to undergo a phase shift by 1/2 wavelength.
Explanation:
Phase contrast microscope is dependent on the difference in refracting index from object to surrounding. Light beam passes through the organism and it gets refracted through it. The phase change is difference in the refracting index of the two medium through which light passes.
Thus, the diffracted beam of light causes the phase shift by 1/2 wavelength.
Answer:
please mark me as a brainleast
Explanation:
1.eneegy can change from ome form to another
Answer:
D. The truck and trailer will experience a net force of 40 newtons backward
Explanation:
Taking the greatest force (trailer), and subtracting it by the smaller force (truck), we can find how many newtons the greater force is applying to pull the whole system:
2,790 - 2,750 = 40 N
Since we know that the trailer is the greater force, the truck & trailer are being pulled backwards by 40 Newtons