Which statement below is false? A) Weight depends on the force of gravity. B) Mass is the amount of matter in an object. C) Mass
2 answers:
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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.
The boulder has a weight of W=2400 N. The weight of an object is the product between its mass m and the gravitational acceleration g:
Rearranging the relationship, we can calculate the mass of the boulder:
We are told that Superman applies a horizontal force to this object, and as a result, the acceleration of the boulder is
. We can find the force applied by using Netwon's second law of motion:
Rearranging the relationship, we can calculate the mass of the boulder:
We are told that Superman applies a horizontal force to this object, and as a result, the acceleration of the boulder is