Answer:
Beat frequency is determined by the number of beats per second one hears from the sound. It can also be determined by taking the difference in frequency of the two notes that interfere to produce the beat.
Explanation:
Beat frequency is determined by the number of beats per second one hears from the sound.
Assuming the sound pulses is coming from two tuning forks;
- Frequency of the first tuning fork (F₁) is known as 240Hz
- Frequency of the second tuning fork (F₂) is not known
- there are 8 beats in 2 seconds
Beat Frequency = number of beats/time
Beat Frequency = 8/2 = 4Hz
Beat Frequency = F₂ - F₁
±4 = F₂ - 240
4 = F₂ - 240
4+240 = F₂
244 = F₂
F₂ = 244 Hz
-4 = F₂ - 240
-4 + 240 = F₂
F₂ = 236 Hz
The percentage uncertainty in the beat frequency is
4 /240 = 0.0167 = 1.67%
To reduce the percentage uncertainty in the beat frequency
A tuning fork of almost the same frequency as the first tuning fork are used to produce sound pulses, let's say the frequency of the second tuning fork is 241 Hz.
The beat frequency = 241Hz -240Hz = I Hz
Then, the percentage uncertainty = 1/240 = 0.00416 =0.416%
<span>Murphy's law is an adage or epigram that is typically stated as: Anything that can go wrong, will go wrong.
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Answer:
<em>The ball will go as high as 8.46 m</em>
Explanation:
<u>Projectile Motion</u>
It's the type of motion that experiences an object launched at a certain height above the ground and moves along a curved path exclusively under the action of gravity.
Being vo the initial speed of the object, θ the initial launch angle, and g the acceleration of gravity, then the maximum height hm can be calculated as follows:
The soccer ball is kicked at a speed of vo=24 m/s at an angle of θ=31°. Taking the value of 
, then:
The ball will go as high as 8.46 m
