The force exerted(applied) onto a surface by the weight of air
When two sound sources of the same amplitude and similar frequencies f₁ and f₂ are played at a time, beats are produced with a frequency given by:

Since the guitar player wants to hear 9 beats in 2 seconds, then:

Then, the pitches that can be used are those whose difference with respect to the frequency of 343Hz is 4.5Hz:

Therefore, the pitches he could bend the string to, are 347.5Hz and 338.5Hz.
Answer:
D
Explanation:
From the formula of coulombs law F = Kq1q2/square of r, we can say the electric force is indirectly related to square of r
Answer:
A it takes less force to stop the 1 kg ball because it has less inerita
Explanation:
Answer:
Torque = 882Nm
Explanation:
Torque = Mg×distance
But plank's is pivoted ,therefore distance=3/2=1.5m
Mass of Nancy=60jg
Acceleration due to gravity, g=9.8m/s^2
Torque= 60×9.8×1.5
Torque= 882Nm