Answer:
5.03 m
Explanation:
The wavelength of a wave is given by
![\lambda=\frac{v}{f}](https://tex.z-dn.net/?f=%5Clambda%3D%5Cfrac%7Bv%7D%7Bf%7D)
where
v is the speed of the wave
f is the frequency of the wave
For the sonar signal in this problem,
![f=288 Hz](https://tex.z-dn.net/?f=f%3D288%20Hz)
![v=1.45\cdot 10^3 m/s](https://tex.z-dn.net/?f=v%3D1.45%5Ccdot%2010%5E3%20m%2Fs)
Substituting into the equation, we find the wavelength:
![\lambda=\frac{1.45\cdot 10^3 m/s}{288 Hz}=5.03 m](https://tex.z-dn.net/?f=%5Clambda%3D%5Cfrac%7B1.45%5Ccdot%2010%5E3%20m%2Fs%7D%7B288%20Hz%7D%3D5.03%20m)
Answer:
![= \frac{(115^2)(\sin 30)^2}{2\times 9,8} \\\\= 168.7m](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%28115%5E2%29%28%5Csin%2030%29%5E2%7D%7B2%5Ctimes%209%2C8%7D%20%5C%5C%5C%5C%3D%20168.7m)
Therefore, highest point that the cannon ball reaches is 168.7m
Explanation:
the cannon is fired at an angle 30 o to the horizonatal with a speed of 155 m/s
highest point that the cannon ball reaches?
![H_{max}=\frac{V^2\sin ^2 \theta}{2g}](https://tex.z-dn.net/?f=H_%7Bmax%7D%3D%5Cfrac%7BV%5E2%5Csin%20%5E2%20%5Ctheta%7D%7B2g%7D)
g = 9.8m/s2
![= \frac{(115^2)(\sin 30)^2}{2\times 9,8} \\\\= 168.7m](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%28115%5E2%29%28%5Csin%2030%29%5E2%7D%7B2%5Ctimes%209%2C8%7D%20%5C%5C%5C%5C%3D%20168.7m)
Therefore, highest point that the cannon ball reaches is 168.7m
When we add a certain amount of heat Q to a substance, the temperature of the substance increases by a
![\Delta T](https://tex.z-dn.net/?f=%5CDelta%20T)
given by
![Q=m C_s \Delta T](https://tex.z-dn.net/?f=Q%3Dm%20C_s%20%5CDelta%20T)
where m is the mass of the substance and Cs is the specific heat capacity of the substance.
By re-arranging the formula, we find
![\Delta T = \frac{Q}{m C_s}= \frac{305.0 J}{(64.6 g)(0.128 J/gC)}=36.9 ^{\circ}C](https://tex.z-dn.net/?f=%5CDelta%20T%20%3D%20%20%5Cfrac%7BQ%7D%7Bm%20C_s%7D%3D%20%5Cfrac%7B305.0%20J%7D%7B%2864.6%20g%29%280.128%20J%2FgC%29%7D%3D36.9%20%5E%7B%5Ccirc%7DC%20%20)
So, since the initial temperature of the metal is Ti=20 C, the final temperature is
Answer:
With an increase in temperature, there is typically an increase in the molecular interchange as molecules move faster in higher temperatures. The gas viscosity will increase with temperature. ... With high temperatures, viscosity increases in gases and decreases in liquids, the drag force will do the same.
Answer:
0%
Explanation:
There is no purple geneotype with either parents so there will be 0 purple and 100% white