Answer:
R = 5.73 m
Explanation:
For an angle of rotation through 21 degree we know that
arc length is given as

now we know that
Arc = 2.1 m
Angle = 21 degree

so now we have



I believe the answer is D. <span>The hypothesis is revised and another experiment is conducted.</span>
frequency is equal to number of oscillations or vibrations upon time
therefore,
check picture
Answer:
The articles appearing under "Milestones in Physics" will give an insight into special events or situations that have been decisive for the evolution of Physics