**Ask your problems, query related to WBUT (MAKAUT) syllabus, also Share your Knowledge by Answering Questions.**
#### Why in case of moving electrons quantum mechanics is used while for moving car we use Newtonian mechanics

#### During isothermal mixing of ideal gases, the entropy of the surrounding
A)remains unchanged B)increases
C) decreases D) cannot be predicted

#### When the event i.e TELOS 2021 will start ?

#### Water at 36 m above sea level has a velocity of 18 m/s and a pressure of 350 kN/m2
. Determine the potential,
kinetic and pressure energy of the water in metres of head. Also determine the total head

#### A car servicing station has 3 stalls where servicing can be offered simultaneously. The cars wait in such a way that when a stall becomes vacant, the car at the head of the line pulls up to it. The station can accommodate at most four cars waiting (seven in station) at one time. The arrival patterns are Poisson with a mean of one car per minute during the peak hours. The service time is exponential with mean 6 minutes. Find the average number of cars in the service station during peak hours, the average waiting time and the average number of cars per hour that cannot enter the station because of full capacity