Answer:
The tension on an object is equal to the mass of the object x gravitational force plus/minus the mass x acceleration. T = mg + ma.
Explanation:
Answer:
1070 Hz
Explanation:
First, I should point out there might be a typo in the question or the question has inconsistent values. If the tube is 40 cm long, standing waves cannot be produced at 42.5 cm and 58.5 cm lengths. I assume the length is more than the value in the question then. Under this assumption, we proceed as below:
The insert in the tube creates a closed pipe with one end open and the other closed. For a closed pipe, the difference between successive resonances is a half wavelength
.
Hence, we have
![\dfrac{\lambda}{2}=58.5-42.5=16 \text{ cm}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Clambda%7D%7B2%7D%3D58.5-42.5%3D16%20%5Ctext%7B%20cm%7D)
.
The speed of a wave is the product of its wavelength and its frequency.
![v=f\lambda](https://tex.z-dn.net/?f=v%3Df%5Clambda)
![f=\dfrac{v}{\lambda}](https://tex.z-dn.net/?f=f%3D%5Cdfrac%7Bv%7D%7B%5Clambda%7D)
![f=\dfrac{343}{0.32}=1070 \text{ Hz}](https://tex.z-dn.net/?f=f%3D%5Cdfrac%7B343%7D%7B0.32%7D%3D1070%20%5Ctext%7B%20Hz%7D)
Answer:
C
Explanation:
becauase i just tooke the test
Power = ![\frac{Work}{Time}](https://tex.z-dn.net/?f=%5Cfrac%7BWork%7D%7BTime%7D)
Delilah: 170J/30s = 5.66 W
Adam: 260J/20s = 13 W
Answer:
2.35 kgm^2
Explanation:
we take length 68.7 cm as x-axis and 47.5 cm as y-axis then the axis about which we have to find out moment of inertia will be z-axis.
moment of inertia about x-axis
kg-m2
![I_y = 10.1\times 0.6872 / 3 = 1.5889 kgm^2](https://tex.z-dn.net/?f=I_y%20%3D%2010.1%5Ctimes%200.6872%20%2F%203%20%3D%201.5889%20kgm%5E2)
by perpendicular axis theorem
![I_z = I_x + I_y = 0.7596 + 1.5889 = 2.35 kgm^2](https://tex.z-dn.net/?f=I_z%20%3D%20I_x%20%2B%20I_y%20%3D%200.7596%20%2B%201.5889%20%3D%202.35%20kgm%5E2)