The two forces in each pair can either both act on the same body or they can act on different bodies. The two forces in each pai
1 answer:
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Answer:
34.70 N
Explanation:
Given :
F~ 1 = 43 N in direction 38◦
F~ 2 = 26 N in direction −140◦
F~ 3 = 27 N in direction 110◦
Therefore,
F~x = 43 cos (38) + 26 cos (-140) + 27 cos (110)
= 43 (0.7) + 26 (-0.7) + 27 (-0.3)
= 3.8
F~y = 43 sin (38) + 26 sin (-140) + 27 sin (110)
= 43 (0.6) + 26 (-0.6) + 27 (0.9)
= 34.5
so, F~ =
= 34.70 N
Answer:
255 Hz
Explanation:
The beat frequency is the difference in frequency between two frequencies that are close.
Let the the unknown frequency be .
Sounded with the 250 Hz tuning fork,
Sounded with the 270 Hz tuning fork,
The common value of in both situations is 255 Hz.