Answer:
Shorter string produces more frequency in two different strings because the equation for frequency is velocity/wavelength , this means that a shorter string creates a shorter wavelength which essentially increases the total frequency produced
Answer:
Explanation:
We shall apply concept of impulse to solve the problem .
Impulse = force x time
impulse = change in momentum
force x time = change in momentum
initial speed u = 24 km/h = 6.67 m /s
final speed v = 65 km/h = 18.05 m /s
change in momentum = m v - mu
= m ( v-u )
= 1350 ( 18.05 - 6.67 )
= 15363 kg m/s
F x 18 = 15363
F = 853.5 N .
Force is defined as the rate of change of momentum.
The initial amount of momentum is
![mv](https://tex.z-dn.net/?f=mv)
because water stops when it hit the wall total change of momentum must be
![\Delta p=mv](https://tex.z-dn.net/?f=%20%5CDelta%20p%3Dmv%20)
.
Now let's calculate the force.
![F= \frac{dp}{dt}=\frac{d(mv)}{dt}=\frac{dm}{dt}v](https://tex.z-dn.net/?f=F%3D%20%5Cfrac%7Bdp%7D%7Bdt%7D%3D%5Cfrac%7Bd%28mv%29%7D%7Bdt%7D%3D%5Cfrac%7Bdm%7D%7Bdt%7Dv)
We need to find
![\frac{dm}{dt}](https://tex.z-dn.net/?f=%5Cfrac%7Bdm%7D%7Bdt%7D)
. This is the amount of water hiting the wall per second.
![\frac{dm}{dt}=\rho Av](https://tex.z-dn.net/?f=%5Cfrac%7Bdm%7D%7Bdt%7D%3D%5Crho%20Av)
Our final formula would be:
![F=\rho Avv=\rho Av^2](https://tex.z-dn.net/?f=F%3D%5Crho%20Avv%3D%5Crho%20Av%5E2)
And now we can calculate the answer:
Answer:
The largest equivalent resistance yu can build using these three resistors is a Serie Resistance with the value of R= 16.74 Ω
Explanation:
Adding Resistances in serie is the way to build de largest equivalent value possible.
Rt= R1+R2+R3
Rt= 6.32 + 8.13 + 2.29
Rt= 16.74Ω