Answer:
what is the passage? I don’t see it
Explanation:
Answer:
Explanation:
As we know that the resistance of the wire is directly proportional to the length of wire and inversely proportional to the area of crossection of the wire.
As the material is copper for both the wires so the resistivity is same and the voltage is also same. As their resistance is different it means either length is different or the area of crossection is different.
Frequency = 1/time period = 1/0.05 = 20s^-1.
3.85 pounds is the answer
Answer:
![u=14.48m/s](https://tex.z-dn.net/?f=u%3D14.48m%2Fs)
Explanation:
From the question we are told that:
Height of window ![h=2m](https://tex.z-dn.net/?f=h%3D2m)
Height of window off the ground ![h_g=7.5m](https://tex.z-dn.net/?f=h_g%3D7.5m)
Time to fall and drop
Generally the Newton's equation motion is mathematically given by
![s=ut+\frac{1}{2}at^2](https://tex.z-dn.net/?f=s%3Dut%2B%5Cfrac%7B1%7D%7B2%7Dat%5E2)
Where
![h=ut+\frac{1}{2}at^2](https://tex.z-dn.net/?f=h%3Dut%2B%5Cfrac%7B1%7D%7B2%7Dat%5E2)
![2=u1.3-\frac{1}{2}*9.8*1.3^2](https://tex.z-dn.net/?f=2%3Du1.3-%5Cfrac%7B1%7D%7B2%7D%2A9.8%2A1.3%5E2)
![2=u1.3-8.281](https://tex.z-dn.net/?f=2%3Du1.3-8.281)
Generally the Newton's equation motion is mathematically given by
![2as=v^2-u^2](https://tex.z-dn.net/?f=2as%3Dv%5E2-u%5E2)
Where
![-2gh_g=v^2-u^2](https://tex.z-dn.net/?f=-2gh_g%3Dv%5E2-u%5E2)
![-2*9.8*7.5=(7.91)^2-u^2](https://tex.z-dn.net/?f=-2%2A9.8%2A7.5%3D%287.91%29%5E2-u%5E2)
![-147=62.5681-u^2](https://tex.z-dn.net/?f=-147%3D62.5681-u%5E2)
![u=\sqrt{209.5681}](https://tex.z-dn.net/?f=u%3D%5Csqrt%7B209.5681%7D)
![u=14.48m/s](https://tex.z-dn.net/?f=u%3D14.48m%2Fs)
Therefore the ball’s initial speed
![u=14.48m/s](https://tex.z-dn.net/?f=u%3D14.48m%2Fs)