Answer:
a) 17 N
b) 21 N
Explanation:
At the 3 o'clock position, the sum of the forces towards the center is:
∑F = ma
T = m v² / r
19 = m v² / r
At the 12 o'clock position, the sum of the forces towards the center is:
∑F = ma
T + mg = m v² / r
T + (0.18)(9.8) = 19
T = 17.2 N
At the 6 o'clock position, the sum of the forces towards the center is:
∑F = ma
T − mg = m v² / r
T − (0.18)(9.8) = 19
T = 20.8 N
Rounding to two significant figures, the tensions are 17 N and 21 N.
Answer:
The answer is first one 1...
inverse square law ...................................................................................................................
Yes an change in velocity either a decrease or increase is an acceleration.
The method that uses radio isotope to date rock formation is called radiometric dating or radioactive dating. This is to determine the age of the rocks. In this technique, the decay rate of the isotopes serves as the basis. Therefore, the answer that shows the true statement of a radio isotope is this: it has a long half-life.
