Answer:
fundamental frequency of pipe will be equal to 74 Hz
Explanation:
We have given for a particular organ pipe two adjacent frequency are 296 Hz and 370 Hz
Speed of the sound in air is 343 m/sec
We have to find the fundamental frequency for the pipe
Fundamental frequency will be equal to difference of the two adjacent frequency
So fundamental frequency = 370 - 296 = 74 Hz
So fundamental frequency of pipe will be equal to 74 Hz
Answer:
C)
volts
Explanation:
f = frequency of oscillator = 1 kHz = 1000 Hz
= 12 Volts
L = Inductance of Inductor = 5 mH = 0.005 H
= Inductive reactance
Inductive reactance is given as
= ![2\pi fL](https://tex.z-dn.net/?f=2%5Cpi%20fL)
= ![2(3.14) (1000)(0.005)](https://tex.z-dn.net/?f=2%283.14%29%20%281000%29%280.005%29)
= Capacitive reactance
Capacitive reactance is given as
![X_{C}=\frac{1}{2\pi fC}](https://tex.z-dn.net/?f=X_%7BC%7D%3D%5Cfrac%7B1%7D%7B2%5Cpi%20fC%7D)
![X_{C}=\frac{1}{2(3.14)(1000)(4\times 10^{-6})}](https://tex.z-dn.net/?f=X_%7BC%7D%3D%5Cfrac%7B1%7D%7B2%283.14%29%281000%29%284%5Ctimes%2010%5E%7B-6%7D%29%7D)
Impedance of the circuit is given as
![z = \sqrt{R^{2}+(X_{L} - X_{C})^{2}}](https://tex.z-dn.net/?f=z%20%3D%20%5Csqrt%7BR%5E%7B2%7D%2B%28X_%7BL%7D%20-%20X_%7BC%7D%29%5E%7B2%7D%7D)
![z = \sqrt{102^{2}+(31.4 - 39.8)^{2}}](https://tex.z-dn.net/?f=z%20%3D%20%5Csqrt%7B102%5E%7B2%7D%2B%2831.4%20-%2039.8%29%5E%7B2%7D%7D)
![z = 102.35](https://tex.z-dn.net/?f=z%20%3D%20102.35%20)
Rms Current flowing is given as
![i = \frac{V_{rms}}{z}](https://tex.z-dn.net/?f=i%20%3D%20%5Cfrac%7BV_%7Brms%7D%7D%7Bz%7D)
![i = \frac{12}{102.35}](https://tex.z-dn.net/?f=i%20%3D%20%5Cfrac%7B12%7D%7B102.35%7D)
A
Rms potential difference across the resistor is given as
volts
It’s definitely the 3rd one
The free-body diagram of your question is; 2 downward forces (253 kg mass of barbell & 133 kg body mass of Kurlovich) acting together on a point supported by 2 upward forces as normal forces exerted by Kurlovich's feet.
Solving the normal forces exerted by 2 feet :
Summation of Forces Vertical = 0
2 Dowwnard Forces = 2 Upward Forces (2F)
253 + 133 = 2F
2F = 386 Kgs
F = 386 / 2
F = 193 Kgs (Normal Force Exerted by Each Foot)
Baking a cake would be a chemical change because the baking powder/soda undergoes through a reaction, you can tell because it generates bubbles/bumps when you bake it.
A chemical change is also irreversible so when you bake the cake, you cannot separate the ingredients.
So your answer would be B. Baking a cake
Hope this helps !