Answer:
Mg will replace Ag in a compound
Explanation:
A single replacement reaction is driven by the position of ions on the activity series.
As a rule of thumb, the position of metal ions on the activity series determines their reactivity.
Metal ions that are above another are more reactive and they will displace those that are lower.
Generally, activity increases as we go up the group.
Mg ions are higher than Ag ions on the series so, Mg will displace Ag from a solution.
The answer is D) vibrate. vibrations are what cause sound. Consequently, this is why there is no sound in space, because there is no medium for the for which sound to travel
Explanation:
It is given that,
Mass of the truck, m = 2000 kg
Initial velocity of the truck, u = 34 km/h = 9.44 m/s
Final velocity of the truck, v = 58 km/h = 16.11 m/s
(a) Change in truck's kinetic energy, ![\Delta E=\dfrac{1}{2}m(v^2-u^2)](https://tex.z-dn.net/?f=%5CDelta%20E%3D%5Cdfrac%7B1%7D%7B2%7Dm%28v%5E2-u%5E2%29)
![\Delta E=\dfrac{1}{2}\times 2000\ kg\times (16.11^2-9.44^2)](https://tex.z-dn.net/?f=%5CDelta%20E%3D%5Cdfrac%7B1%7D%7B2%7D%5Ctimes%202000%5C%20kg%5Ctimes%20%2816.11%5E2-9.44%5E2%29)
![\Delta E=170418.5\ J](https://tex.z-dn.net/?f=%5CDelta%20E%3D170418.5%5C%20J)
![\Delta E=1.7\times 10^5\ J](https://tex.z-dn.net/?f=%5CDelta%20E%3D1.7%5Ctimes%2010%5E5%5C%20J)
(b) Change in momentum of the truck, ![\Delta p=m(v-u)](https://tex.z-dn.net/?f=%5CDelta%20p%3Dm%28v-u%29)
![\Delta p=2000\ kg\times (16.11-9.44)](https://tex.z-dn.net/?f=%5CDelta%20p%3D2000%5C%20kg%5Ctimes%20%2816.11-9.44%29)
![\Delta p=13340\ kg-m/s](https://tex.z-dn.net/?f=%5CDelta%20p%3D13340%5C%20kg-m%2Fs)
Hence, this is the required solution.
They traveled for six hours and forty two minutes